Effect of Blue Light Filtration on Visual Performance

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.

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Key information

Conditions

Cataract Eye Diseases Lens Diseases

Age range

21 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Who can participate

Healthy volunteers accepted: No

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

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.

Treatment and study plan

Clear clip-on glasses

Device

Clip-on glasses with no light filtering properties

Blue light filter clip-on glasses

Device

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

Primary outcomes

Photostress Recovery Time

Time frame: Day 1

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.

Sponsors and collaborators

Lead sponsor

Alcon Research

Industry

Registry information

Important dates

Study start: 2013
Primary completion: 2014
Study completion: 2014
First posted: Sep 11, 2013
Registry last updated: Jan 19, 2015

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.

Published trials that share one or more normalized conditions with this study.

Completed