Myopia:the Role of Cone Opsin Mutations & Glasses That Control Axial Elongation

Withdrawn before enrolling · Not applicable

Conditions studied: Myopia

In brief

1. To determine the effect of spectacles with a red blocking filter on myopia progression in children. 2. To determine the effect of spectacles with a holographic diffuser that spreads incident light rays over an angle of 0.5 degrees on myopia progression in children 3. To determine the combined effects of spectacles with a red blocking filter and a diffuser that spreads incident light over an angle of 0.5 degrees on myopia progression in children.

Key facts

Study ID

NCT01923675

Run by

University of Washington

People needed

0

Starts

2013-11-01

Expected to finish

2017-12-01

Last updated by the study team

2019-08-14

Who can join

Age: 8 and older, up to 13. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• nearsighted having a refractive error of at least -0.5 diopters
• myopia progression at least -.50 D per year in previous year
• astigmatism and anisometropia not more than 1.5 D
• distance monocular acuity 6/6 or better
• near monocular acuity of 0.4 M or better
• stereoacuity not more than 40 sec of arc at 40 cm
• able to respond to subjective testing
• no contact lens use during the study
• able to comply with wearing the experimental lenses daily for 18 months
• able to have axial length measurements accurately on the Zeiss Intraocular Lens Master
• willing to donate a blood sample or a buccal swab for genetic analysis
• can be refracted to 20/20 or 20/15

You may not qualify if…

• glaucoma, amblyopia, strabismus
• ocular disease
• developmental delay
• history of wearing bifocal lenses
• any type of eye surgery
• color vision deficiency

Where it is running

• University of Washington — Seattle, Washington, United States

Full record on ClinicalTrials.gov

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