Impact of Color Correcting Lenses on Color Vision Deficiency

Immediate and Extended Wear Impact of Color Correcting Lenses on Color Vision Deficiency

To demonstrate improved color vision in subjects with color vision deficiencies while wearing color-correcting lenses and after color-correcting lense use.

The long term objective of this study is to extend upon research demonstrating improvements in color vision deficiencies (CVDs) while wearing color-correcting lenses (CCLs) and after wearing CCLs. Recordings of brainwaves and eye-waves will be made to assess the retina, optic nerve and brain in order to localize where adaptive changes in the visual system are occurring in response to wearing CCLs.

Inclusion Criteria:

• no reported history of eye, systemic or ocular disease
• VA of 20/30 in each eye
• hereditary color vision deficient (CVDs) verified by failing scores on the red-green anomaloscope (outside system normal range) and Ishihara testing (3 or more errors on 14 testable plates)
• color vision normal (CVNs) verified by passing red-green anomaloscope (outside system normal range) and Ishihara testing (3 or more errors on 14 testable plates)

Exclusion Criteria:

• reported use of sleep-inducing or wakefulness drugs