Study finds, Visual Outcomes for Moderate Bilateral Astigmat
A Study was conducted to compare visual outcomes in children with moderate bilateral astigmatism treated with glasses with those who were merely observed.

The medical records of all children aged 1 to less than 7 years diagnosed with moderate bilateral astigmatism (+1.25 to +3.25 diopters [D]) over a 12-year period were retrospectively reviewed. Children with anisometropia more than 1.00D, hyperopia more than +3.00D, myopia more than -3.00D, amblyopia, or strabismus at diagnosis were excluded. Kaplan-Meier rates of developing amblyopia and strabismus were assessed over a minimum follow-up of 18 months.

--85 of 1235 subjects met inclusion criteria; 58 were prescribed glasses while 27 were observed.

--The groups differed by mean age at diagnosis (3.56±1.42 years for observed vs. 4.31±1.36 years for glasses) and mean amount of astigmatism (1.73±0.43D for observed vs. 2.00±0.51D for glasses).

--By 4 years of follow-up, the Kaplan-Meier rate of developing amblyopia was 8.3% in the observed group and 10.3% in the glasses group while strabismus was 7.1% among those observed and 7.1% of those prescribed glasses.

In conclusion, the incidence of amblyopia and strabismus in this group of children with moderate bilateral astigmatism who were treated with glasses versus those who were not were similar and small. These findings show that prescribing glasses for these youngsters may be no better than waiting for amblyopia or strabismus to develop.