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Completed

NCT Number: NCT04465344

Multicentric Clinical Study on Isatis TF Trifocal Intraocular Lens

The study will be a multicentric, prospective open-label ethics committee approved clinical study to investigate safety, visual outcomes, contrast sensitivity and rotational stability after bilateral implantation of Isatis TF IOL following cataract surgery.

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Key information

Conditions

Cataract Eye Diseases Lens Diseases Lens Opacities

Age range

50 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Gemini Eye Clinic Ostrava, Ostrava, Czechia

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About this study

This is a staged, multicentric, controlled, prospective, open-label clinical study whereby patients undergoing routine cataract surgery will have bilateral implantation of hydrophobic acrylic refractive trifocal intraocular lenses (Isatis TF) or the monofocal control device Isatis.

The investigational device, Control lens and all study products, including the devices used for the study examinations, will be used within the intended use specifications from the manufacturer. In addition, no invasive or other burdening examinations will occur for the patient.

The study will be carried out in up to five clinical centers in Spain.

The device under investigation is a hydrophobic acrylic trifocal intraocular lens (IOL) manufactured by the sponsor of this study. The trifocality of this investigational device is based on a purely refractive principle with the goal to provide additional near and intermediate visual acuity with low photic side effects. The IOLs will be implanted in the course of routine cataract surgery and will benefit to patients suffering from cataract development.

The control device (Isatis) is a hydrophobic acrylic monofocal intraocular lens to be implanted during cataract surgery. This control lens is CE approved and commercially available in Spain. Isatis monofocal lens is the parent lens of the device under investigation and both lenses share mechanical and material properties.

In total 180 patients will be recruited for this clinical study and undergo bilateral implantation of the Isatis TF intraocular lens or Isatis lens in a 2:1 ratio. Subjects participating in the trial will attend a total of maximum 11 study visits over a period of 11-13 months. Subjects would have the option for unscheduled visits if required medically.

Data analyses will be performed after the last patient finished the 120-180 days postoperative examination.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Clinically documented age-related cataract in both eyes with no comorbidity;
  • Calculated IOL power is within the range of the investigational IOLs;
  • Male or female adults ages 50 years or older on the day of screening who have cataracts in both eyes;
  • Regular corneal astigmatism (measured by topographer)
  • Astigmatism ≤1.0 D (measured by an automatic keratometer)
  • Clear intraocular media other than cataract;
  • Availability, willingness and sufficient cognitive awareness to comply with examination procedures;
  • Patient is willing to receive bilateral implantation of a trifocal IOL (this inclusion criteria applies only to the study group, not the control group);
  • Signed informed consent.

Exclusion criteria

  • Age of patient < 50 years;
  • Regular corneal astigmatism >1.0 dioptres (measured by an automatic keratometer)
  • Irregular astigmatism (measured by topographer);
  • Difficulty for cooperation (distance from their home, general health conditions);
  • Subjects with diagnosed degenerative visual disorders (e.g. macular degeneration or other retinal or optic disorders);
  • Subjects with AMD suspicious eyes as determined by OCT examination;
  • Previous intraocular or corneal surgery;
  • Traumatic cataract;
  • Instability of keratometry or biometry measurements; Acceptable maximum standard deviation: AL: ± 150 µm; ACD: ± 150 µm; K1 / K2: ± 0.15 D;
  • Ocular hypertension, suspicious glaucoma or glaucoma;
  • Pupil abnormalities (non-reactive, tonic pupils, abnormally shaped pupils or pupils that do not dilate under mesopic / scotopic conditions);
  • Expected complicated surgery;
  • Ocular surface disease (clinical symptoms or keratitis);
  • Pregnancy or lactation;
  • Second eye treatment will only be performed when Best Corrected Distance Visual Acuity (CDVA) of first eye is ≤ 0.2 logMAR (≥ 0.63 decimal);
  • Concurrent participation in another drug or device investigation.

In addition to above mentioned in- and exclusion criteria, subjects shall be discontinued when certain conditions are present at the time of surgery, including:

  • zonular instability;
  • need for iris manipulation;
  • capsular fibrosis or other opacity; and
  • inability to fixate IOL in desired position. In such cases, the subject shall be followed until the condition has stabilized.

Treatment and study plan

Implantation of trifocal IOL, Isatis TF (device under investigation)

Device

Patients will be implanted with study IOL in both eyes

Implantation of monofocal IOL, Isatis (control device)

Device

Patients will be implanted with Control IOL in both eyes

Primary outcomes

  1. Primary Safety Endpoint: Rates of Adverse Events

    Time frame: 120-180 days postoperative

    The objective is to compare the SPE (Safety and Performance Endpoints) rates of the investigational product to reference data stated in the according ISO standard for posterior intraocular lenses (EN ISO 11979-7:2018) based on minimum 100 subjects.

  2. Primary Performance Endpoint: Best Corrected Distance Visual Acuity

    Time frame: 120-180 days postoperative

    The primary performance endpoint is to show non inferiority of Isatis TF compared to the monofocal comparator in terms of best corrected distance visual acuity (CDVA) by means of statistical significance.

Secondary outcomes

  1. Secondary Safety Endpoint: Best Corrected Distance Visual Acuity compared to historical data

    Time frame: 120-180 days postoperative

    The objective is to compare best corrected distance visual acuities (CDVA) above defined thresholds of the investigational product to the normative data stated in the according ISO norm (EN ISO 11979-7:2018) for posterior chamber intraocular lenses.

  2. Secondary Performance Endpoint: Distance Corrected Near Visual Acuity (DCNVA)

    Time frame: 120-180 days postoperative

    Secondary performance endpoint is to show a statistically significant increase between pre-and postoperative findings on monocular Distance Corrected Near Visual Acuity (DCNVA) under photopic light conditions on the first implanted eye.

  3. Secondary Performance Endpoint: Distance Corrected Intermediate Visual Acuity (DCIVA)

    Time frame: 120-180 days postoperative

    Secondary performance endpoint is to show a statistically significant increase between pre-and postoperative findings on monocular Distance Corrected Intermediate Visual Acuity (DCIVA) under photopic light conditions on the first implanted eye.

Other outcomes

  1. Monocular Uncorrected Distance Visual Acuity (UDVA) under photopic light conditions

    Time frame: Preoperative, 1-2 days postoperative; 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative

    Monocular UDVA is measured with ETDRS charts placed in 4m distance according to ISO 11979-7:2018. This assessment is done monocularly under photopic light conditions.

  2. Binocular Uncorrected Distance Visual Acuity (UDVA) under photopic light conditions

    Time frame: 120-180 days postoperative, 330-420 days postoperative

    Binocular UDVA is measured with ETDRS charts placed in 4m distance according to ISO 11979-7:2018. This assessment is done binocularly under photopic light conditions.

  3. Monocular Corrected Distance Visual Acuity (CDVA) under photopic light conditions

    Time frame: Preoperative, 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative, 330-420 days postoperative

    Monocular CDVA is measured with ETDRS charts placed in 4m distance with best aided corrective glasses according to ISO 11979-7:2018. This assessment is done monocularly under photopic light conditions.

  4. Monocular Corrected Distance Visual Acuity (CDVA) under mesopic light conditions

    Time frame: 120-180 days postoperative

    Monocular CDVA is measured with ETDRS charts placed in 4m distance with best aided corrective glasses according to ISO 11979-7:2018. This assessment is done binocularly under mesopic light conditions.

  5. Binocular Corrected Distance Visual Acuity (CDVA) under photopic light conditions

    Time frame: 120-180 days postoperative

    Binocular CDVA is measured with ETDRS charts placed in 4m distance with best aided corrective glasses according to ISO 11979-7:2018. This assessment is done binocularly under photopic light conditions.

  6. Monocular Uncorrected Intermediate Visual Acuity (UIVA) under photopic light conditions

    Time frame: 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative

    Monocular UIVA is measured with ETDRS charts placed in 66cm distance according to ISO 11979-7:2018. This assessment is done monocularly under photopic light conditions.

  7. Binocular Uncorrected Intermediate Visual Acuity (UIVA) under photopic light conditions

    Time frame: 120-180 days postoperative, 330-420 days postoperative

    Binocular UIVA is measured with ETDRS charts placed in 66cm distance according to ISO 11979-7:2018. This assessment is done binocularly under photopic light conditions.

  8. Monocular Uncorrected Near Visual Acuity (UNVA) under photopic light conditions

    Time frame: 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative

    Monocular UNVA is measured with ETDRS charts placed in 40cm distance according to ISO 11979-7:2018. This assessment is done monocularly under photopic light conditions.

  9. Binocular Uncorrected Near Visual Acuity (UNVA) under photopic light conditions

    Time frame: 120-180 days postoperative, 330-420 days postoperative

    Binocular UNVA is measured with ETDRS charts placed in 40cm distance according to ISO 11979-7:2018. This assessment is done binocularly under photopic light conditions.

  10. Monocular Distance Corrected Intermediate Visual Acuity (DCIVA) under photopic light conditions

    Time frame: Preoperative, 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative

    Monocular DCIVA is measured with ETDRS charts placed in 66cm distance with corrective glasses for far distance according to ISO 11979-7:2018. This assessment is done monocularly under photopic light conditions.

  11. Monocular Distance Corrected Intermediate Visual Acuity (DCIVA) under mesopic light conditions

    Time frame: 120-180 days postoperative

    Monocular DCIVA is measured with ETDRS charts placed in 66cm distance with corrective glasses for far distance according to ISO 11979-7:2018. This assessment is done binocularly under mesopic light conditions.

  12. Binocular Distance Corrected Intermediate Visual Acuity (DCIVA) under photopic light conditions

    Time frame: 120-180 days postoperative

    Binocular DCIVA is measured with ETDRS charts placed in 66cm distance with corrective glasses for far distance according to ISO 11979-7:2018. This assessment is done binocularly under photopic light conditions.

  13. Monocular Distance Corrected Near Visual Acuity (DCNVA) under photopic light conditions

    Time frame: Preoperative, 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative

    Monocular DCNVA is measured with ETDRS charts placed in 40cm distance with corrective glasses for far distance according to ISO 11979-7:2018. This assessment is done monocularly under photopic light conditions.

  14. Monocular Distance Corrected Near Visual Acuity (DCNVA) under mesopic light conditions

    Time frame: 120-180 days postoperative

    Monocular DCNVA is measured with ETDRS charts placed in 40cm distance with corrective glasses for far distance according to ISO 11979-7:2018. This assessment is done binocularly under mesopic light conditions.

  15. Binocular Distance Corrected Near Visual Acuity (DCNVA) under photopic light conditions

    Time frame: 120-180 days postoperative

    Binocular DCNVA is measured with ETDRS charts placed in 40cm distance with corrective glasses for far distance according to ISO 11979-7:2018. This assessment is done binocularly under photopic light conditions.

  16. Manifest refraction

    Time frame: Preoperative, 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative, 330-420 days postoperative

    The manifest refraction is measured by means of a phoropter. The data contains values for sphere, cylinder and axis of cylinder according to ISO 11979-7:2018. This data will also be used to calculate the manifest refractive spherical equivalent (MRSE)

  17. Adjusted Mean Refractive Spherical Equivalent (MRSE)

    Time frame: 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative

    The predictability of the postoperative manifest refraction will be evaluated using the absolute value of the adjusted MRSE calculated by the following formula:

    MRSEadjusted = MRSEpostop - MRSEtarget.

  18. Binocular Defocus Curve

    Time frame: 120-180 days postoperative

    To assess the visual acuity for different distances, defocus curves under photopic light conditions are measured. This test is performed with best distance corrected refraction and spherical additions ranging from -4.5 D to +2.0 D in 0.5 D steps. This examination is performed binocularly.

  19. Binocular Contrast Sensitivity under photopic light conditions

    Time frame: 120-180 days postoperative

    Contrast Sensitivity under photopic light conditions using the standardized contrast sensitivity device CSV-1000 (VectorVision). This examination is performed binocularly.

  20. Binocular Contrast Sensitivity under mesopic light conditions

    Time frame: 120-180 days postoperative

    Contrast Sensitivity under mesopic light conditions using the standardized contrast sensitivity device CSV-1000 (VectorVision). This examination is performed binocularly.

  21. Binocular Contrast Sensitivity under photopic light conditions and using a glare source

    Time frame: 120-180 days postoperative

    Contrast Sensitivity under photopic light conditions with a glare source using the standardized contrast sensitivity device CSV-1000 (VectorVision). This examination is performed binocularly.

  22. Binocular Contrast Sensitivity under mesopic light conditions and using a glare source

    Time frame: 120-180 days postoperative

    Contrast Sensitivity under mesopic light conditions with a glare source using the standardized contrast sensitivity device CSV-1000 (VectorVision). This examination is performed binocularly.

  23. Patient reported outcomes - Quality of Vision questionnaire [McAlinden et al, 2010]

    Time frame: preoperative, 120-180 days postoperative

    To assess the subjective perception of disturbances by photic phenomena, the validated and verified Quality of Vision (QoV) questionnaire will be used.

    This questionnaire is a linear-scaled 30-item instrument and is designed with 10 symptoms rated in each of three scales (frequency, severity, and bothersome).

    The QoV Questionnaire provides a QoV score in terms of symptom frequency, severity, and bothersome [McAlinden et al, 2010].

  24. Patient reported outcomes - Catquest-9SF 2011 questionnaire [Lundström et al, 2009]

    Time frame: preoperative, 120-180 days postoperative

    To assess if difficulties in daily life occur due to impaired sight. This questionnaire is a 9-item Rasch-scaled instrument to assess subjective perception of visual impairment after surgery [Lundström et al, 2009].

  25. Patient reported outcomes - Patient-Reported Spectacle Independence Questionnaire (PRSIQ) [Morlock et al, 2017]

    Time frame: preoperative, 120-180 days postoperative

    The PRSIQ is a patient-reported measure assessing spectacle independence following cataract surgery. The analyses conducted provide evidence for the use of the PRSIQ total score as a measure of spectacle independence [Morlock et al, 2017].

  26. Pupil Size under photopic light conditions

    Time frame: preoperative, 120-180 days postoperative

    Photopic pupil diameters are measured with a ruler allowing for a precision of at least +/-0.5 mm. In addition to the measurement with a ruler, pupil diameters under photopic light conditions will be recorded from the preoperative Pentacam measurement.

    For the photopic pupil diameters, eye illumination should be identical to that used for photopic contrast sensitivity testing. Pupil measurements should only be made after the eye has had time to fully adapt to the testing conditions (at least 5 minutes).

    The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

  27. Pupil Size under mesopic light conditions

    Time frame: preoperative, 120-180 days postoperative

    Mesopic pupil diameters are measured with a ruler allowing for a precision of at least +/-0.5 mm. For the mesopic pupil diameters, eye illumination should be identical to that used for mesopic contrast sensitivity testing. Pupil measurements should only be made after the eye has had time to fully adapt to the testing conditions (at least 5 minutes).

    The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

  28. Fundus examination with dilated pupil

    Time frame: preoperative, 30-60 days postoperative, 120-180 days postoperative, 330-420 days postoperative

    The slitlamp examination is one examination to analyse the integrity of eye structures and the implanted IOL. The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

    With the slitlamp the ophthalmologist can observe the eyes stereoscopically. A focussed slit of light, which can be width-adjusted, is projected on the eye to be examined. The investigator observes this projection on the eye through a reflected light microscope. The slitlamp is used to observe the anterior and posterior part of the eye, including cornea, lens and anterior chamber. By dilating the pupil the fundus can also be examined. Following conditions shall be examined with the slitlamp:

    • Fundus

  29. Slitlamp examination - Corneal status

    Time frame: Preoperative, 1-2 days postoperative, 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative, 330-420 days postoperative

    The slitlamp examination is one examination to analyse the integrity of eye structures and the implanted IOL. The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

    With the slitlamp the ophthalmologist can observe the eyes stereoscopically. A focussed slit of light, which can be width-adjusted, is projected on the eye to be examined. The investigator observes this projection on the eye through a reflected light microscope. The slitlamp is used to observe the anterior and posterior part of the eye, including cornea, lens and anterior chamber. By dilating the pupil the fundus can also be examined. Following conditions shall be examined with the slitlamp:

    • Corneal Status

  30. Slitlamp examination - Iris status

    Time frame: Preoperative, 1-2 days postoperative, 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative, 330-420 days postoperative

    The slitlamp examination is one examination to analyse the integrity of eye structures and the implanted IOL. The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

    With the slitlamp the ophthalmologist can observe the eyes stereoscopically. A focussed slit of light, which can be width-adjusted, is projected on the eye to be examined. The investigator observes this projection on the eye through a reflected light microscope. The slitlamp is used to observe the anterior and posterior part of the eye, including cornea, lens and anterior chamber. By dilating the pupil the fundus can also be examined. Following conditions shall be examined with the slitlamp:

    • Iris Status

  31. Slitlamp examination - Signs of inflammation

    Time frame: Preoperative, 1-2 days postoperative, 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative

    The slitlamp examination is one examination to analyse the integrity of eye structures and the implanted IOL. The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

    With the slitlamp the ophthalmologist can observe the eyes stereoscopically. A focussed slit of light, which can be width-adjusted, is projected on the eye to be examined. The investigator observes this projection on the eye through a reflected light microscope. The slitlamp is used to observe the anterior and posterior part of the eye, including cornea, lens and anterior chamber. By dilating the pupil the fundus can also be examined. Following conditions shall be examined with the slitlamp:

    • Signs of inflammation
    • Anterior chamber cells,
    • Anterior chamber flare,
    • Cystoid macular oedema,
    • Hypopyon, and
    • Endophthalmitis.

  32. Slitlamp examination - Pupillary block

    Time frame: 1-2 days postoperative, 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative, 330-420 days postoperative

    The slitlamp examination is one examination to analyse the integrity of eye structures and the implanted IOL. The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

    With the slitlamp the ophthalmologist can observe the eyes stereoscopically. A focussed slit of light, which can be width-adjusted, is projected on the eye to be examined. The investigator observes this projection on the eye through a reflected light microscope. The slitlamp is used to observe the anterior and posterior part of the eye, including cornea, lens and anterior chamber. By dilating the pupil the fundus can also be examined. Following conditions shall be examined with the slitlamp:

    • Pupillary block.

  33. Slitlamp examination - Retinal detachment

    Time frame: preoperative, 30-60 days postoperative, 120-180 days postoperative, 330-420 days postoperative

    The slitlamp examination is one examination to analyse the integrity of eye structures and the implanted IOL. The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

    With the slitlamp the ophthalmologist can observe the eyes stereoscopically. A focussed slit of light, which can be width-adjusted, is projected on the eye to be examined. The investigator observes this projection on the eye through a reflected light microscope. The slitlamp is used to observe the anterior and posterior part of the eye, including cornea, lens and anterior chamber. By dilating the pupil the fundus can also be examined. Following conditions shall be examined with the slitlamp:

    • Retinal detachment.

  34. Slitlamp examination - Status of anterior and posterior capsule

    Time frame: 1-2 days postoperative, 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative, 330-420 days postoperative

    The slitlamp examination is one examination to analyse the integrity of eye structures and the implanted IOL. The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

    With the slitlamp the ophthalmologist can observe the eyes stereoscopically. A focussed slit of light, which can be width-adjusted, is projected on the eye to be examined. The investigator observes this projection on the eye through a reflected light microscope. The slitlamp is used to observe the anterior and posterior part of the eye, including cornea, lens and anterior chamber. By dilating the pupil the fundus can also be examined. Following conditions shall be examined with the slitlamp:

    • Status of anterior and posterior capsule.

  35. Slitlamp examination - IOL decentration

    Time frame: 1-2 days postoperative, 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative, 330-420 days postoperative

    The slitlamp examination is one examination to analyse the integrity of eye structures and the implanted IOL. The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

    With the slitlamp the ophthalmologist can observe the eyes stereoscopically. A focussed slit of light, which can be width-adjusted, is projected on the eye to be examined. The investigator observes this projection on the eye through a reflected light microscope. The slitlamp is used to observe the anterior and posterior part of the eye, including cornea, lens and anterior chamber. By dilating the pupil the fundus can also be examined. Following conditions shall be examined with the slitlamp:

    • IOL decentration.

  36. Slitlamp examination - IOL tilt

    Time frame: 1-2 days postoperative, 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative, 330-420 days postoperative

    The slitlamp examination is one examination to analyse the integrity of eye structures and the implanted IOL. The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

    With the slitlamp the ophthalmologist can observe the eyes stereoscopically. A focussed slit of light, which can be width-adjusted, is projected on the eye to be examined. The investigator observes this projection on the eye through a reflected light microscope. The slitlamp is used to observe the anterior and posterior part of the eye, including cornea, lens and anterior chamber. By dilating the pupil the fundus can also be examined. Following conditions shall be examined with the slitlamp:

    • IOL tilt.

  37. Slitlamp examination - IOL discoloration

    Time frame: 1-2 days postoperative, 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative, 330-420 days postoperative

    The slitlamp examination is one examination to analyse the integrity of eye structures and the implanted IOL. The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

    With the slitlamp the ophthalmologist can observe the eyes stereoscopically. A focussed slit of light, which can be width-adjusted, is projected on the eye to be examined. The investigator observes this projection on the eye through a reflected light microscope. The slitlamp is used to observe the anterior and posterior part of the eye, including cornea, lens and anterior chamber. By dilating the pupil the fundus can also be examined. Following conditions shall be examined with the slitlamp:

    • IOL discoloration.

  38. Slitlamp examination - IOL opacity

    Time frame: 1-2 days postoperative, 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative, 330-420 days postoperative

    The slitlamp examination is one examination to analyse the integrity of eye structures and the implanted IOL. The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

    With the slitlamp the ophthalmologist can observe the eyes stereoscopically. A focussed slit of light, which can be width-adjusted, is projected on the eye to be examined. The investigator observes this projection on the eye through a reflected light microscope. The slitlamp is used to observe the anterior and posterior part of the eye, including cornea, lens and anterior chamber. By dilating the pupil the fundus can also be examined. Following conditions shall be examined with the slitlamp:

    • IOL opacity.

  39. Intraocular pressure (IOP) measurement

    Time frame: Preoperative, 1-2 days postoperative, 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative, 330-420 days postoperative

    The IOP will be measured with non-contact tonometer as part of the routine follow up examinations. The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

  40. Keratometry

    Time frame: Preoperative

    Keratometric measurements are performed to calculate the required IOL power. The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

  41. IOL power and target refraction

    Time frame: day of surgery

    The parameter of the implanted IOL must be recorded as well as the target refraction given by the IOL calculator. This parameter is needed to calculate the accuracy of achieving the target refraction. The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

  42. Fundus OCT

    Time frame: Preoperative

    An OCT (optical coherence tomography) image will be taken at the preoperative visit to identify AMD suspicious eyes that need to be excluded from this study. The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

  43. Biometry

    Time frame: Preoperative

    Biometry measurements are performed to calculate the required IOL power. The examination is performed and documented according to the guidelines in ISO 11979-7:2018.

  44. Corneal topography

    Time frame: Preoperative

    Pentacam device (Oculus, Germany) will be used to perform corneal topography. This examination is needed to exclude patients showing an irregular corneal astigmatism.

  45. Corneal aberrometry

    Time frame: Preoperative

    Pentacam device (Oculus, Germany) will be used to perform corneal aberrometry measurement. The following values will be evaluated in this study: Spherical aberrations, high order aberrations.

  46. IOL rotation

    Time frame: day of surgery, 1-2 days postoperative, 7-14 days postoperative, 30-60 days postoperative, 120-180 days postoperative

    To determine the rotational stability of the lenses after implantation, the actual IOL orientation has to be recorded as the intended surgical position during surgery using a photograph through the surgery microscope or within one hour after surgery using a photograph through a slit lamp to document the rotational position of the IOL. Additional orientations are measured and recorded at the follow up visits by taking retroilluminated photographs in mydriasis using the slit lamp.

    To determine the rotational stability, it is important that the IOL axis marks of the IOL are visible as well as concurrent structures of the eye (in the same image) that are fixed and stable. Preferred fixed structures are limbal vessels. The pupil is dilated if necessary to visualize the IOL axis marks.

  47. Halo and glare scores

    Time frame: Preoperative, 120-180 days postoperative, 330-420 days postoperative

    A Halo and Glare simulator software (Eyeland Design Network GmbH, Germany) will be used to assess the subjective perception of photic phenomena. The patients will be asked to adjust the halo and glare level in a simulated image to the amount they perceive of such photic phenomena. This test is performed pre- and postoperatively. The preoperative outcomes serve as a baseline measurement.

Sponsors and collaborators

Lead sponsor

Cutting Edge SAS

Industry

Collaborators

  • targomedGmbH

Registry information

Official study title

Multicentric Clinical Study to Determine Safety and Efficacy of a Hydrophobic Acrylic Trifocal Intraocular Lens (IOL)

Important dates

Study start
2021
Primary completion
2024
Study completion
2024
First posted
Jul 10, 2020
Registry last updated
Feb 12, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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