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OpenTrials
Completed

NCT Number: NCT04649177

Pilot Study to Investigate the Feasibility, Reliability and Efficacy of Utilizing OCT to Automate PROSE Fitting

EYEdeal Scanning Technology enables rapid measurement of corneal and scleral topography. By accurately measuring the ocular surface with this imaging technology, the current iterative fitting method required to fit PROSE (prosthetic replacement of the ocular surface ecosystem) devices could be replaced and/or strengthened with a more rapid, automated fitting sequence. This could considerably reduce the time needed per visit, the number of visits, and the number of devices needed to be manufactured to reach the endpoint. Additionally, the scanning technology may afford the opportunity to successfully fit some pathology that were previously treatment failures. The automated technology may as well reduce the intensive clinician training time needed to fit PROSE devices, therefore increasing the availability and access to patients.

The goal of this research is to evaluate the reliability and efficacy of this automated technology for fitting PROSE devices. Data from real-time measurement of the human eye ocular surface topography will be used to fabricate a prosthetic lens. The fit of the PROSE device will be evaluated, as well as the subjective comfort of the fit.

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Key information

Conditions

Keratoconus Arthritis Arthritis, Rheumatoid Autoimmune Diseases Conjunctival Diseases Conjunctivitis Connective Tissue Diseases Corneal Diseases Corneal Injuries Corneal Scar Corneal Trauma Craniocerebral Trauma Dilatation, Pathologic Dry Eye Syndromes Ectasia Eye Diseases Eye Injuries Facial Injuries Immune System Diseases Joint Diseases Keratitis Keratoconjunctivitis Keratoconjunctivitis Sicca Lacrimal Apparatus Diseases Mouth Diseases Musculoskeletal Diseases Nervous System Diseases Ocular Surface Disease Pathological Conditions, Anatomical Pathological Conditions, Signs and Symptoms Pellucid Marginal Corneal Degeneration Rheumatic Diseases Salivary Gland Diseases Sjogren's Syndrome Skin and Connective Tissue Diseases Stomatognathic Diseases Trauma, Nervous System Wounds and Injuries Xerostomia

Age range

21 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

BostonSight

Needham, Massachusetts, 02494, United States

About this study

Inclusion and Exclusion Criteria

The participant will be eligible to participate if the following criteria apply:

  • Written Informed Consent has been obtained prior to any study-related procedures
  • Male or female, 18 years of age and older prior to the initial visit
  • Established wearer of PROSE in the study eye with an optimized fit in the opinion of the clinician
  • No medical need for a PROSE retreatment or replacement lens at the time of enrollment in the study eye, in the opinion of the clinician
  • Initial PROSE fitting was initiated and completed at BostonSight, Needham
  • Current PROSE device does not have channels or fenestrations
  • Currently wears a PROSE device in the study eye primarily for an irregular ocular surface /irregular cornea (including but not limited to Keratoconus, Pellucid Marginal Degeneration, Ectasia, Post-Penetrating Keratoplasty, Corneal Scar, Trauma) AND/OR ocular surface disease
  • Has the ability to NOT wear the current PROSE device in the study eye for 3 days prior to scan and 3 days prior to first fitting appointment in the opinion of the investigator and subject
  • In the opinion of the investigator, the subject has the ability to follow study instructions
  • In the opinion of the investigator, the subject has the ability to complete all study procedures and visits

The participant would NOT be eligible to participate if at least one of the following criteria is met:

  • Is currently participating in any other type of eye-related clinical or research study
  • Is pregnant or nursing as reported by the subject
  • Has a condition or is in a situation which, in the investigator's opinion, may put the subject at significant risk, may confound study outcomes, or may significantly interfere with the subject's participation in the study
  • Has had previous ocular surgery within the past 12 weeks
  • Intolerance to PROSE wear
  • Inability to maintain stable fixation and exposure for ocular surface imaging
  • Corneal touch by the posterior surface of the device in current PROSE device
  • Allergy to sodium fluorescein
  • Patient is an employee of BostonSight
  • Subject is currently incarcerated.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Written Informed Consent has been obtained prior to any study-related procedures
  • Male or female, 18 years of age and older prior to the initial visit
  • Established wearer of PROSE in the study eye with an optimized fit in the opinion of the clinician
  • No medical need for a PROSE retreatment or replacement lens at the time of enrollment in the study eye, in the opinion of the clinician
  • Initial PROSE fitting was initiated and completed at BostonSight, Needham
  • Current PROSE device does not have channels or fenestrations
  • Currently wears a PROSE device in the study eye primarily for an irregular ocular surface /irregular cornea (including but not limited to Keratoconus, Pellucid Marginal Degeneration, Ectasia, Post-Penetrating Keratoplasty, Corneal Scar, Trauma) AND/OR ocular surface disease
  • Has the ability to NOT wear the current PROSE device in the study eye for 3 days prior to scan and 3 days prior to first fitting appointment in the opinion of the investigator and subject
  • In the opinion of the investigator, the subject has the ability to follow study instructions
  • In the opinion of the investigator, the subject has the ability to complete all study procedures and visits

Exclusion criteria

  • Is currently participating in any other type of eye-related clinical or research study
  • Is pregnant or nursing as reported by the subject
  • Has a condition or is in a situation which, in the investigator's opinion, may put the subject at significant risk, may confound study outcomes, or may significantly interfere with the subject's participation in the study
  • Has had previous ocular surgery within the past 12 weeks
  • Intolerance to PROSE wear
  • Inability to maintain stable fixation and exposure for ocular surface imaging
  • Corneal touch by the posterior surface of the device in current PROSE device
  • Allergy to sodium fluorescein
  • Patient is an employee of BostonSight
  • Subject is currently incarcerated. -

Treatment and study plan

Ocular surface optical coherence tomography

Device

EYEdeal Scanning technology enables rapid measurement of the corneal and scleral topography which provides data for an automated sequence to fit PROSE devices

Primary outcomes

  1. Central Corneal Clearance

    Time frame: 45 minutes post lens application

    Central corneal clearance as measured by OCT after 45 minutes of lens wear Outcome measure reports data only from the study eye.

  2. Lens Decentration

    Time frame: 45 minutes post lens application

    Lens decentration after 45 minutes of lens wear (x axis) Outcome measure reports data only from the study eye.

  3. Lens Comfort After 45 Minutes of Lens Wear

    Time frame: 45 minutes post lens application

    0 to 10 grading (0 = very comfortable to 10 = very uncomfortable) Outcome measure reports data only from the study eye.

  4. Number of Participants With Lens Centration

    Time frame: 45 minutes post lens application

    Each study eye (one eye from each participant) was evaluated to determine if the lens was "Centered" (yes) or "Decentered" (no) on the eye after 45 minutes of wear.

    Outcome measure reports data only from the study eye. All participants were reported in this outcome measure.

  5. Number of Participants With Aligned Scleral Landing Zone

    Time frame: 45 minutes post lens application

    Each study eye (one eye from each participant) was evaluated to determine if the scleral landing zone was properly aligned on the eye (yes) or not properly aligned on the eye (no) after 45 minutes of wear.

    Outcome measure reports data only from the study eye. All participants were reported in this outcome measure.

Secondary outcomes

  1. Lens Rotation

    Time frame: 45 minutes post lens application

    Lens rotation after 45 minutes of wear. Lens rotation was measured using an embedded program in the iTRACE system. The rotation data with image guided fitting with the OCT system was collected to compare with known experience with non-image guided fitting sets (the traditional fitting process), which typically rotate approximately 20-30 degrees on the eye. A lower number may indicate the manufactured lens more closely approximates the contours of the eye.

    Outcome measure reports data only from the study eye.

  2. Number of Participants Achieving an Acceptable Fitting Lens

    Time frame: 45 minutes post lens application

    Number of participants achieving an acceptable fitting lens after 45 minutes of lens wear. All participants are reported. Outcome measure reports data only from the study eye.

    Is the fit acceptable for dispensing to the patient (yes) or is the fit NOT acceptable for dispensing to patient (no) as evaluated 45 minutes post lens application.

  3. Number of Participants With Lens Movement

    Time frame: 45 minutes

    Number of patients with lens movement after 45 minutes of wear are reported. Lens movement (YES) means the lens is NOT appropriately fitting/settling on the eye. Lens movement (NO) means the lens is appropriately fitting/settling on eye. Outcome measure reports data only from the study eye.

  4. Number of Participants With Adequate Lens Limbal Clearance

    Time frame: 45 minutes post lens application

    Each study eye (one eye from each participant) was evaluated to determine if there was adequate (yes) lens limbal clearance or inadequate (no) lens limbal clearance after 45 minutes of wear.

    Outcome measure reports data only from the study eye. All participants were reported in this outcome measure.

Sponsors and collaborators

Lead sponsor

Boston Sight

Other

Collaborators

  • EYEdeal scanning, LTC

Registry information

Important dates

Study start
2020
Primary completion
2022
Study completion
2022
First posted
Dec 2, 2020
Registry last updated
Oct 27, 2023

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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