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An evaluation of the operative features of a new computerized application PC Hess for the measurement of ocular motility using a personal computer is described. Objective: to determine the operative characteristics of the PC Hess computerized application in comparison with the Hess-Lancaster screen in strabismic and non strabismic patients. Methodology: a prototype of the application has been evaluated in a clinical environment on a sample of 73 patients that came to optometric and ophthalmologic centers in Colombia with and without oculomotor problems, and compared with a traditional Hess-Lancaster screen. All patients were evaluated with the two tests with an interval of 15 minutes. A sensitivity and specificity test was done for the computerized application and the Pearson correlation values for normal data were measured in the different points of evaluation of the test. Results: in general terms, the shapes of the oculomotor fields obtained using the two instruments were similar, but the computerized application tended to measure a slightly converged displacement in comparison with Hess-Lancaster screen and to record larger deviations. However, the diagnostic value of the instruments was similar and the sensitivity and especificity value for the application were 1. Conclusion: the computerized application PC Hess is a viable alternative to the traditional Hess-Lancaster Screen.

Un nuevo sistema para la medición de la motilidad ocular utilizando un computador personal