Purpose: An analysis was carried out on a computerized perimetry of a group of patients affected by open angle chronic glaucoma. The patients were studied for a minimum of 18 months and a maximum of 64 months. The following was analyzed: 1) The varying sensibility of the central 30° of visual field. 2) The statistical significance and its clinical interest related to different refractive conditions. Methods: 110 patients (208 eyes), with an average age of 56.7 years (±14.8) were tested at least three times, once every six months. The total sum of visual fields was 837. All the patients were divided into 4 subgroups relating to refraction. At the first visual field the disease had been in evidence for an average of 4.7 years (±3.7) and in all the patients the intraocular pressure under therapy remained stable for the whole period of the study (Av.16.9 mmHg±2.3). A central 30° visual field (OCTOPUS 2000 Prog.G1) was carried out at each control. The resulting data was analyzed by PERIDATA Trend function. These results in turn were processed using Macintosh computer Statview II program. Results: At the first exam 82% of eyes showed a global decrease of relative differential light (MD>2 dB) and in 67% of the eyes examined the distribution of the defect was inomogeneous (LV>6 dB). The analysis of variance for subgroups showed a major significant decrease of MD in high myopic patients (ANOVA test). A linear regression analysis (PERIDATA) highlighted a statistically significant change of MD value in 36% and of LV value in 34% of the eyes studied. An analysis for subgroups showed that the high myopic patients had the highest percentage of change of MD and LV (respectively 46% and 42%). Among the groups, there was no significance in the different progression of MD decrease (ANOVA test) Conclusions: Despite good intraocular pressure a deterioration of visual field is more frequent in high myopic patients (> -8.50 D), although its progression does not show any significant difference between myopic and emmetropic or hypermetropic eyes.
Analysis of visual field damage in glaucomatous myopic eyes / A., Perdicchi; Arrico, Loredana; F., Degregorio; Pannarale, Luigi. - In: INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE. - ISSN 0146-0404. - STAMPA. - 37:3(1996), pp. 2353-2353. (Intervento presentato al convegno ARVO tenutosi a Fourt Lauderday- Miami nel 21-26 APRIL 1996).
Analysis of visual field damage in glaucomatous myopic eyes
ARRICO, Loredana;PANNARALE, Luigi
1996
Abstract
Purpose: An analysis was carried out on a computerized perimetry of a group of patients affected by open angle chronic glaucoma. The patients were studied for a minimum of 18 months and a maximum of 64 months. The following was analyzed: 1) The varying sensibility of the central 30° of visual field. 2) The statistical significance and its clinical interest related to different refractive conditions. Methods: 110 patients (208 eyes), with an average age of 56.7 years (±14.8) were tested at least three times, once every six months. The total sum of visual fields was 837. All the patients were divided into 4 subgroups relating to refraction. At the first visual field the disease had been in evidence for an average of 4.7 years (±3.7) and in all the patients the intraocular pressure under therapy remained stable for the whole period of the study (Av.16.9 mmHg±2.3). A central 30° visual field (OCTOPUS 2000 Prog.G1) was carried out at each control. The resulting data was analyzed by PERIDATA Trend function. These results in turn were processed using Macintosh computer Statview II program. Results: At the first exam 82% of eyes showed a global decrease of relative differential light (MD>2 dB) and in 67% of the eyes examined the distribution of the defect was inomogeneous (LV>6 dB). The analysis of variance for subgroups showed a major significant decrease of MD in high myopic patients (ANOVA test). A linear regression analysis (PERIDATA) highlighted a statistically significant change of MD value in 36% and of LV value in 34% of the eyes studied. An analysis for subgroups showed that the high myopic patients had the highest percentage of change of MD and LV (respectively 46% and 42%). Among the groups, there was no significance in the different progression of MD decrease (ANOVA test) Conclusions: Despite good intraocular pressure a deterioration of visual field is more frequent in high myopic patients (> -8.50 D), although its progression does not show any significant difference between myopic and emmetropic or hypermetropic eyes.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
