ILAV   21219
INSTITUTO DE INVESTIGACION EN LUZ, AMBIENTE Y VISION
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Objective discrimination between operable and non-operable cataracts
Autor/es:
PAZ FILGUEIRA CLEMENTE; SÁNCHEZ ROBERTO FRANCISCO; LUIS ISSOLIO; MERITXELL VILASECA; JAUME PUJOL; ELISA COLOMBO
Lugar:
Fort Lauderdale,Florida
Reunión:
Congreso; ARVO 2012 Annual Meeting; 2012
Institución organizadora:
ARVO
Resumen:
Purpose: To obtain a limit value in terms of the Objective Scatter Index (OSI), which is based on double-pass retinal images, in order to discriminate between operable and non-operable cataracts. To compare the obtained OSI values with subjective assessments made by a group of ophthalmologists in patients with different grades of cataracts. Methods: Forty-five eyes from 24 patients (from 50 to 70 years old) with posterior subcapsular cataracts (PSC), nuclear cataracts (NC), and cortical cataracts (CC) were included in the study. They did not report any ocular alteration other than the cataract itself and their BSCVA was higher than 0.6. Cataracts were classified according to the LOCS III classification system which consists of the direct observation of the crystalline lens through the slit-lamp (Chylack et al. Arc Ophthalmol 1993). From this subjective analysis made by three different ophthalmologists it was established whether the cataract should be scheduled for surgery or not. Subjects were also analyzed by means of the double-pass instrument (OQAS, Visiometrics SL, Spain), which provides an objective assessment of the intraocular scattering by means of the OSI parameter (Artal el al. Plos 2011). Results: Twenty-two of the eyes measured (49%) had a PSC cataract, 20 (44%) a NC, and 3 (7%) corresponded to CC. According to the subjective procedure 13 (29%) of the examined eyes showed a severity in their cataract grade that made it operable according to the ophthalmologist criteria. Mean OSI for non-operable cataracts was of 1.30±0.9 (±SD) while for operable cataracts it was of 3.33±1.62. These values were significantly different (p