RESUMEN
Much of the vision loss from age-related eye disease can be prevented. The purpose of this study is to determine the prevalence of preventable causes of low vision. In this study, files of 204 patients were evaluated. Low vision was defined as best-corrected visual acuity in the better eye between 20/70 to 20/200. Diagnosis of anterior and posterior segment disease was based on the eye examination that performed with Topcon slit-lamp biomicroscope and direct and indirect ophthalmoscope examination. The prevalence of preventable causes of low was respectively: diabetic retinopathy, in 33 patients [16.18%], glaucoma in 6 patients [2.94%], and amblyopia in 2 patients [1%]. The majority of cases have treatable and/or preventable causes; reduction of low vision or blindness can be achieved by appropriate screening strategies
RESUMEN
Ocular dryness is a well-recognized adverse side effect of many medications. The purpose of this study was to compare tear film stability between psychiatric patients that use lithium carbonate or carbamazepine and normal cases. Tear film break up time test was performed in three groups, 30 patients using lithium carbonate, 30 patients using carbamazepine and 30 normal cases. Values of the TBUTs were compared among groups by the independent t-test. Differences between both of patients and control groups were significant [p<0.0001]. The results show that these drugs contribute to decrease of tear film break up time