Purpose: To evaluate changes in functional visual acuity (FVA) measurements before and after treatment with 0.1% cyclosporine ophthalmic solution for 3 months in patients with severe atopic keratoconjunctivitis (AKC).
Methods: Pairs of eyes were analyzed from 3 boys (mean age 9 ± 3.6 years) who complained of having severe AKC and were recruited for the study. Conventional Landolt visual acuity, FVA, and visual maintenance ratio (VMR) measurements were conducted before and after 3 months of 0.1% cyclosporine eye drop treatment. Tear film lipid layer interferometry, tear film break-up time, fluorescein and rose bengal vital stainings, and the Schirmer test were also performed before and after treatment.
Results: Eye drop treatment was associated not only with improvement of tear function and ocular surface status but also with better quality of visual function. The mean logarithm of the minimum angle of resolution FVA and Landolt visual acuity values improved from 0.45 ± 0.26 and 0.13 ± 0.17 before treatment to 0.16 ± 0.03 and -0.06 ± 0.05 after treatment, respectively. Similarly, the mean VMR values were markedly improved from 0.88 ± 0.06 to 0.95 ± 0.03 after treatment.
Conclusions: FVA and VMR are promising parameters in the assessment of dynamic visual acuity changes in AKC-affected patients and evaluation of treatment outcome.
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