PURPOSE: To compare the results in subjects undergoing visual field testing using the full cylindrical correction and the spherical equivalent. METHODS: Twenty patients (35 eyes) underwent visual field testing with Humphrey (SITA 24-2) perimetry using the full cylindrical correction and the spherical equivalent at a random sequence. Mean Deviation, Standard Pattern Deviation, fixation loss, false positive and false negative results and test duration were compared. RESULTS: No difference was found regarding Mean Deviation, Standard Pattern Deviation, false positive and false negative results and test duration. Fixation loss was significantly higher with the full cylindrical correction. CONCLUSION: Visual fields performed with the spherical equivalent show no change in the retinal sensitivity when compared to examinations done with the full cylindrical correction for the same eye.
Perimetry; Visual fields; Glaucoma; Sensorial thresholds; Refractive errors; Comparative study
