Effect of Blue Light Filtration on Visual Performance

N/ACompletedNCT01938989

Alcon Research158 enrolled

Overview

The purpose of this study is to evaluate photostress recovery with blue light filter clip-on glasses among pseudophakes \[ie, subjects in which the natural lens of the eye has been replaced with an artificial lens (intraocular lens) during cataract surgery\]. This study will enroll subjects previously implanted with no blue light filter intraocular lenses (IOLs) for at least 3 months.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

BASIC_SCIENCE

Masking

SINGLE

Enrollment

158

Conditions

Cataract

Interventions

Clear clip-on glassesDEVICE

Clip-on glasses with no light filtering properties

Blue light filter clip-on glassesDEVICE

Clip-on glasses with blue light filtering properties equivalent to AcrySof IOLs

Eligibility

Sex: ALLMin age: 21 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Cataract surgery in both eyes with no blue light filtering intraocular lenses for at least 3 months; * Good ocular health; * 20/40 or better vision with best correction in both eyes; * Willing to provide voluntary consent and sign informed consent form; * Able to competently perform testing; * Other protocol-defined inclusion criteria may apply. Exclusion Criteria: * Ocular pathology, degeneration, or media opacity (cloudiness) that could impact study measurements; * Other protocol-defined exclusion criteria may apply.

Outcomes

Primary Outcomes

Photostress Recovery Time

Photostress Recovery Time is the time necessary to recover function (e.g., contrast discrimination) following exposure to a bright glare source. The subject fixated on an image (black and white grating) and underwent photostress (glare) for 5 seconds. Only 1 eye (study eye) was assessed.

Time frame: Day 1

Data from ClinicalTrials.gov

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