Preferential looking and recognition acuities in clinical amblyopia.
Although others have noted a correlation between grating and recognition acuities (RA) when both tests are performed on the same day, the value of preferential looking (PL) in predicting eventual visual outcome has not been studied. PL acuities of 64 preverbal patients considered at risk of amblyopia were measured. When these children became verbal, their visual acuities were determined using standard recognition acuity tests. Based on intervening amblyopia treatment between PL and RA measures, 40 patients were designated the minimal treatment group (MTG) and 24 the intensive treatment group (ITG). Chi-square analysis for the MTG showed agreement (P less than .005) between PL and RA in identifying better, equal, and worse eyes. Interocular ratios of PL and RA were significantly correlated for the MTG (P less than .001), but not for the ITG. Monocularly, a consistent correlation between PL and RA was not found. Our data suggest that PL is predictive of recognition acuity in patients whose visual acuity was expected to remain stable.
Mandava
N
N
Department of Ophthalmology, Albany Medical College, NY 12208.
Simon
J W
JW
Jenkins
P L
PL
D000550:Amblyopia / Q000175:diagnosis* / Q000628:therapy; D002648:Child; D002675:Child, Preschool; D005139:Eyeglasses; D006801:Humans; D007223:Infant; D016896:Treatment Outcome; D014787:Vision Tests; D014792:Visual Acuity