Neonatal asteroid hyalosis.

Asteroid hyalosis, noted in 0.83% of routine eye examinations, is uncommon in younger patients and is more frequently seen in patients more than 60 years old. It has been considered to be related to an aging process, and when it occurs in younger patients, ocular disease is typically associated. We report a 4-week-old patient with Down syndrome and bilateral congenital cataracts who had unilateral asteroid hyalosis.