Color vision in Stargardt's disease.

Area of Science:

• Ophthalmology
• Medical Research
• Vision Science

Background:

• Stargardt disease is a common inherited macular dystrophy.
• Color vision defects are known to occur in Stargardt disease, but their progression and specific characteristics require further elucidation.

Purpose of the Study:

• To investigate the progression of color vision deficits in patients with Stargardt disease.
• To correlate color vision changes with disease stage and visual acuity.

Main Methods:

• Color vision was assessed in nine Stargardt disease patients using Standard Pseudoisochromatic Plates part 2 (SSP2), Farnsworth-Munsell 100 hue test (FM100), Nagel anomaloscope, and Besançon anomalometer.
• Patients ranged in age from 13 to 52 years.

Main Results:

• Early stages showed subtle red-green defects.
• Later stages revealed acquired red defects (pseudo-protanomalous) and abnormal FM100 scores, progressing to a red-green axis.
• Blue color vision deficits were observed with SSP2 and the Besançon anomalometer in advanced stages.
• Visual acuity significantly correlated with Rayleigh and Moreland equation matching ranges.
• No correlation was found between disease duration and color vision test results.

Conclusions:

• Stargardt disease causes progressive, multifaceted color vision impairment, affecting both red-green and blue perception.
• The observed color vision changes correlate with visual acuity, offering insights into disease impact.
• Understanding these progressive visual deficits is crucial for patient management and future therapeutic strategies.