Measurement of low vision in advanced cicatricial retinopathy of prematurity.

This study evaluates functional vision in visually impaired children with stage IV to V cicatricial retinopathy of prematurity (CROP) by comparing results derived from the Teller acuity cards and a battery of behavioral tasks, the visual function battery (VFB). Vision was evaluated in 26 eyes of 15 children ages 6 months to 14 years, who underwent retinal reattachment procedures for active stage IV and stage V retinopathy of prematurity. Results showed that 10 of 26 eyes (38%) had a recordable grating acuity to Teller acuity card assessment. Twenty-five of 26 eyes (96%) showed a response to the VFB. Sixteen of 26 eyes (62%) showed recordable scores with the VFB but no corresponding scores with the Teller acuity cards. The VFB may be more reliable than the Teller acuity cards in measuring visual function in the very low acuity range.