Congenital cataract - new indications for surgery

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The visual function of 64 infants with congenital cataracts was evaluated by means of the electroretinogram (ERG) and visually evoked potential (VEP). Among ten cases with monocular congenital cataract, two showed a normal VEP and eight an abnormal VEP, suggesting form vision deprivation amblyopia. From the combined recording of the ERG and VEP in infants with binocular congenital cataract, 17% of the associated nystagmus can be attributed to abnormalities of the retina and/or optic nerve. The other 83% nystagmus seemed to be the consequence of visual deprivation due to the cataracts themselves. Visual acuity in infants with congenital cataract was examined by a preferential looking technique, and a new criterium for early surgery for congenital cataract was adopted.

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