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Does the disc parameter “mean pallor value” suggest a risk for further deterioration of visual field defects?

April 26, 2017defects deterioration Disc field parameter risk Visual

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Does the disc parameter “mean pallor value” suggest a risk for further deterioration of visual field defects?

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PATIENTS: In 10 patients with ocular hypertension and 23 patients with primary open-angle glaucoma (Octopus 201, Humphrey perimeter) disc pallor was calculated by double examinations with the ONHA in 1987-1988, and a long-term follow-up of the visual field was performed. In all patients we also acquired information about the IOP level and visual field during the observation time from the ophthalmologists. Only one eye per patient was evaluated after randomized selection. RESULTS: In ocular hypertensive patients only 1 of 10 eyes showed deterioration of the visual field. In the glaucoma group 4 eyes out of 23 showed an increase in visual field loss. The eyes with a tendency to deteriorate had a higher mean pallor value compared with the mean value of the corresponding group [ocular hypertensives: 0.40 compared to 0.31 +/- 0.07 (0.02); POAG: 0.50 +/- 0.06 (0.03) compared to 0.33 +/- 0.08 (0.02); mean value +/- SE (SEM)]. The difference was statistically significant in the glaucoma group;