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OpenTrials
Completed

NCT Number: NCT01505816

Visual Outcomes After Implantation of a New Multifocal Intraocular Lens

This prospective nonrandomized study comprised patients with cataract, corneal astigmatism, and motivation for spectacle independence. In all cases, a Rayner M-flex® T toric Intraocular Lens will be implanted in the capsular bag. Three months postoperatively, distance, intermediate, and near visual acuities; spherical equivalent; residual refractive astigmatism; defocus curve; and contrast sensitivity will be evaluated. A patient-satisfaction and visual phenomena questionnaire will also be administered.

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Key information

Conditions

Cataract Eye Diseases Lens Diseases

Age range

55 year–85 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 4

Primary location

Hospital Oftalmologico Brasilia

Brasília, Federal District, 70200670, Brazil

About this study

Postoperative evaluation was performed at 3 months. The uncorrected and corrected distance visual acuity were assessed using the 100% contrast Early Treatment Diabetic Retinopathy Study chart, uncorrected intermediate visual acuity at 70 cm, and uncorrected near visual acuity at 40 cm; a binocular defocus curve was constructed using the ETDRS chart at 4 m and adding to the patient's manifest refraction +2.50 to -5.00 D sphere in 0.50 increments. The cylinder axis of the Intraocular lens (IOL) was measured at the slitlamp using the beam protractor after full mydriasis. The mean of the absolute values of degrees the intraocular lens was off axis was determined.

Contrast sensitivity was measured using the CSV-1000 HGT instrument (VectorVision, Inc.), which presents a translucent chart divided into 4 cycles with spatial frequencies of 3, 6, 12 and 18 cycles per degree. The background illumination of the translucent chart does not depend on room lighting. All measurements were obtained under mesopic (5 cd/m2) and photopic (85 cd/m2) conditions. The examinations were performed unilaterally at a distance of 2.5 m with Best-corrected visual acuity (BCVA) and an undilated pupil. All measurements were performed under the same conditions.

Patient satisfaction and quality of life were assessed by a simple questionnaire. Patients were interviewed 3 months postoperative. Patients were asked about visual disturbances, visual lifestyle activities, spectacle use, and satisfaction with the procedure.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Cataract
  • Any race
  • Either gender
  • Diagnosis of cataracts both eyes
  • Pre-existing physical conditions that could skew visual results, such as Diabetes, Retinal detachment, Macular degeneration, or Cancer
  • Subjects must have > 1.00 diopter of astigmatism

Exclusion criteria

  • Central endothelial cell count less than 2000 cells/mm2 glaucoma or intraocular pressure greater than 21 mmHg amblyopia
  • Retinal abnormalities
  • Diabetes mellitus steroid or immunosuppressive treatment
  • Connective tissue diseases

Treatment and study plan

Multifocal Intraocular Lens (RAYNER M-FLEX T TORIC IOL)

Device

Multifocal IOL implantation

Other names: RAYNER M-FLEX T TORIC IOL

Primary outcomes

  1. Visual Performance After Implantation of a Toric Multifocal Refractive Intraocular Lens

    Time frame: 3 months postoperative

    Postoperative evaluation will be performed at 3 months. The uncorrected distance visual acuity (UDVA) and corrected distance visual acuity (CDVA) will be assessed using the 100% contrast ETDRS chart; a binocular defocus curve will be constructed using the ETDRS chart at 4 m.

Secondary outcomes

  1. Contrast sensitivity

    Time frame: 3 months

    Contrast sensitivity will be measured using the CSV-1000 HGT instrument (VectorVision, Inc.), which presents a translucent chart divided into 4 cycles with spatial frequencies of 3, 6, 12 and 18 cycles per degree (cpd). The background illumination of the translucent chart does not depend on room lighting. All measurements will be obtained under mesopic (5 cd/m2) and photopic (85 cd/m2) conditions. The examinations will be performed unilaterally at a distance of 2.5 m with BCVA and an undilated pupil. All measurements will be performed under the same conditions.

  2. Patient satisfaction

    Time frame: 3 months

    Patient satisfaction and quality of life will be assessed by a simple questionnaire. Patients will be interviewed 3 months postoperative. Patients will be asked about visual disturbances, visual lifestyle activities, spectacle use, and satisfaction with the procedure.

Sponsors and collaborators

Lead sponsor

Hospital Oftalmologico de Brasilia

Other

Collaborators

  • University of Sao Paulo

Registry information

Official study title

Visual Outcomes After Implantation of a New Refractive Toric Multifocal Intraocular Lens

Important dates

Study start
2011
Primary completion
2011
Study completion
2012
First posted
Jan 9, 2012
Registry last updated
Jan 9, 2012

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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