Effect of Blue Light Filtration on Visual Performance

Alcon

Status: Completed

Conditions: Cataract

Treatments: Device: Clear clip-on glasses; Device: Blue light filter clip-on glasses

Study type: Interventional

Funder types: Industry

Identifiers

NCT01938989

A01311

Details and patient eligibility

About

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.

Enrollment: 158 patients

Sex: All

Ages: 21+ years old

Volunteers: No Healthy Volunteers

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.

Trial design

Primary purpose: Basic Science

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Single Blind

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158 participants in 2 patient groups

Clear, then Blue Light Filter

Other group

Description:

Clear clip-on glasses first, followed by blue light filter clip-on glasses, as worn over habitual correction

Treatment:

Device: Blue light filter clip-on glasses

Device: Clear clip-on glasses

Blue Light Filter, then Clear

Other group

Description:

Blue light filter clip-on glasses first, followed by clear clip-on glasses, as worn over habitual correction

Treatment:

Device: Blue light filter clip-on glasses

Device: Clear clip-on glasses