STEREOACUITY TESTING IN AMBLYOPIA

Title STEREOACUITY TESTING IN AMBLYOPIA
Author, Co-Author Paulette Schmidt, Renee Faulstick
Topic
Year
1992
Day
Sunday
Program Number
Poster 39
Room
Great Hall
Affiliation
Abstract Controlled systematic studies of random dot stereotests (RDS) have proven effective in the vision screening of children; yet, questions have been raised as to the effectiveness of these procedures in the identification of refractive amblyopia. In a masked investigation, the sensitivity of Mentor B-VAT SG II random dot stereoacuity (B-VAT RDS) and Bailey-Lovie visual acuity (B-LVA) were compared through repeated measurements of visual and stereo acuity. Threshold estimates for B-VAT RDS and B-LVA were determined in 10 children with anisohyperopic amblyopia and 10 normals. Analysis with Wilcoxon Sign Rank Test and Bonferroni's modification for multiple comparisons (p=0.05/7 or 0.0071) revealed 8 random dot size/contrast combinations that illustrated statistically significant differences in stereoacuity performance between amblyopes and normals. The results showed that anisohyperopic amblyopes demonstrated distinctly reduced B-VAT RDS in comparison to age, race and sex matched normals. These results support the use of RDS for detecting amblyopia and therefore the potential usefulness of this procedure for the vision screening of children. (Supported by NIH EY08825-01)
Affiliation of Co-Authors
Outline