Outcome study of stereopsis in relation to duration of misalignment in XXXX .

@entity1 @entity5971
PURPOSE: A recent outcome study of Randot stereopsis in @entity5971 reported early surgical alignment is associated with a higher percentage of @entity1 with stereopsis and a higher quality of stereopsis because early surgery minimized the duration of misalignment. We compared the Titmus stereopsis with the duration of misalignment and the age of alignment for a group of @entity1 who were surgically aligned by 24 months of age. METHODS: The data previously obtained in a study of 90 @entity1 aligned by 2 years of age, examined in a masked, independent evaluation for binocularity was analyzed. The age of alignment and duration of misalignment was correlated with the percentage of @entity1 with stereopsis and quality of the stereopsis result as determined by the Titmus vectograph overlay. RESULTS: @entity1 aligned by 6 or 12 months of age or within 6 or 12 months of duration of misalignment did not differ in percentage with stereopsis. However, @entity1 aligned after 12 months of age did show a decrease percentage with stereopsis (P <.05, power 0.8). The quality of the stereopsis that was established was similar for those aligned by 6 or 12 months (P >.05, power 0.8). The quality of stereopsis, however, was decreased for @entity1 with duration of misalignment greater than 12 months (P <.001, power 0.8). CONCLUSION: Alignment within 1 year of age or within 12 months of misalignment favorably affects the percentage of @entity1 who develop stereopsis in the treatment of @entity5971 . The quality of the stereopsis result is affected by the duration of the misalignment, rather, than the age of alignment per se.
