X-linked Juvenile Retinoschisis
X-linked juvenile retinoschisis (XLRS) occurs exclusively in males and is characterized by visual loss that begins in early childhood; patients are usually school-age and are experiencing visual disturbances, especially in reading. The prevalence is estimated to be 1 in 5000–25,000 men, worldwide. XLRS has complete penetrance but variable expressivity. Carrier females generally remain asymptomatic.