versão impressa ISSN 0004-2749versão On-line ISSN 1678-2925
Arq. Bras. Oftalmol. vol.61 no.4 São Paulo ago. 1998
To study the symmetry of clinical manifestations, as well as the correlation between psychophysical and electrophysiological findings in patients with retinitis pigmentosa (RP).
58 (32 male and 26 female) RP patients (mean age = 34.4 ± 16.8 years), 32 men and 26 women, were tested. Visual acuity (VA), Goldmann visual field (VF), electroretinogram (ERG) and electro-oculogram (EOG) were performed. Student's test for dependent samples and Pearson's correlation were performed.
Mean VA was LogMAR = 0.35 (Snellen equivalent 20/45) for right eye (OD) and LogMAR = 0.37 (Snellen equivalent 20/47) for left eye (OS). Mean VF was 20° for both eyes (OU). Inter-ocular correlation (Pearson's "r" coefficient) was 0.722 (VA; p < O. 05) and 0.967 (VF; p < 0.05). 21 patients had a recordable ERG; the mean amplitude was not significantly different (p > 0.05) between eyes, for any of the ERG components. The mean VF was significantly better in RP patients with a recordable ERG than in the nonrecordable group (approximately 35° and 15°, respectively; p < 0. 05). 16 patients had a recordable EOG (mean ARDEN ratio: 1.41 ± 0.42, OD and 1.57 ± 0.58, OS; p > 0.05).
A high interocular symmetry of clinical manifestations, as well as a significant correlation between VF and ERG were observed in our RP patients.
Key-words: Retinitis pigmentosa; Bilaterality; Symmetry; Electroretinogram (ERG); Electro-oculogram (EOG