juvenile retinoschisis

n.
  1. A hereditary retinoschisis occurring in children under the age of 10 and characterized by cyst development within the nerve fiber layer of the retina, often with macular involvement.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.