Low Vision Patients' Preference for Colored Filters and Illumination for Near Reading Determined by the LuxIQ/2

Completed · Not applicable

Conditions studied: Ocular Conditions Resulting in Visual Impairment

In brief

The effect of tinted filters and illumination on the visual performance of patients with low vision (i.e., individuals with reduced vision that is uncorrectable with glasses, surgery or treatments) has been a topic of research and discussion for many years, yet there is no current consensus or practice standard for the evaluation and recommendation of colored filters and/or illumination intensity. Anecdotally, there have been many subjective reports of improvement in visual function and comfort with the use of tinted lenses. Previous studies have attempted to elucidate the subjective improvements observed using vision tests, such as visual acuity and contrast sensitivity, and the findings have been inconsistent. Traditionally, filters and optimal illumination are prescribed clinically through a trial and error method, which involves trying various filters and lamps haphazardly to determine which if any are preferred by the patient. The investigators are proposing to evaluate whether the illumination and filters chosen in office by participants using a new assessment tool the LuxIQ/2 translate to overall patient comfort and improved speed, accuracy and print size while reading, and to evaluate whether participants have the same illumination and colored filter preference determined by the LuxIQ/2 in a clinical office setting and in their home environment. The investigators will evaluate whether participants prefer lighting determined by the new assessment tool the LuxIQ/2 in comparison to lighting determined by the OttLite Cobra in office.

Key facts

Study ID

NCT03192722

Run by

Nova Southeastern University

People needed

42

Starts

2017-04-20

Expected to finish

2023-05-31

Last updated by the study team

2024-03-29

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Subjects who express a desire to obtain filters in a pair of near reading glasses
• Age 18 and older
• Provide informed consent
• Complaints of difficulty performing sustained reading tasks, such as reading books or magazines
• Patients who are interested in obtaining preferred filters in a pair of reading glasses
• Patients who have completed an evaluation in the low vision service of the NSU The Eye Care Institute or Lighthouse of Broward or UCLA Stein Eye Institute

You may not qualify if…

• Subjects with a score less than 21 on the TICS-M
• Subjects diagnosed with Dry Eye Syndrome determined by clinical signs, history of or current topical prescription medication (i.e., Restasis or Xiidra) usage, or the usage of other dry eye treatment including punctal plugs, instillation of artificial tears more than once per day and advanced dry eye treatment
• Subjects with poor vision who would require electronic magnification or non-visual devices
• Patients with poor vision for whom clinical management strategy would not involve tinted reading glasses and a lamp

Where it is running

• Nova Southeastern University — Fort Lauderdale, Florida, United States

Full record on ClinicalTrials.gov

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