Prematurity or 13. Retinitis Pigmentosa Usher Syndrome Glaucoma 5. Cortical visual impairment results in difficulties in processing visual information. Nystagmus is an involuntary rapid movement of the eye. Amblyopia is uncorrectable blurred vision due to disuse of the eye.
Cataracts are a clouding of the lens of the eye.
Strabismus is a deviation of the eyes so they are not simultaneously directed to the same object. Developmental Concerns 1.