<p>A genome-wide association study of refractive error using the Illumina 2.5M chip was performed using a subset of the control group from the original AREDS study. These control individuals are  all Caucasian, do not have age-related macular degeneration (AMD) and were further screened to also exclude individuals with cataracts, retinitis</p>

NEI Age-Related Eye Disease Study (AREDS) - Genetic Variation in    Refractive Error Substudy

Refractive Errors study with SNP Genotypes (Array) data on dbGaP (2,000 participants)