[Correlation of changes of the optic nerve disc and the field of vision in initial open-angle glaucoma]

Compliance of the optic disc with the visual field has been examined with the Peritest in 137 eyes (90 patients) with initial open-angle glaucoma. Coincidence of the two states has been observed in 54% of cases, no coincidence in the rest. The authors' findings evidence that changes in the visual field have anticipated the optic disc changes in 48% of cases, whereas optic disc shifts have developed before the visual field defects in 52% of cases. An important factor contributing to the compliance of the optic disc with the visual field is, besides the excavation area, the neuroglial ring status, that has been changed in 58% of cases. The authors come to the conclusion that combined changes in the visual field and optic disc are a more reliable criterion confirming the diagnosis of glaucoma.