Results of fundusperimetrie after resorbed premacular hemorrhages under the internal limiting membrane in 10 patients

Background: During their acute phase, premacular hemorrhages under the inte rnal limiting membrane induce an absolute scotoma. It is generally suspecte d that extravasal blood has a toxic effect on the neuroretina. The objectiv e of this study is to investigate whether one can indeed detect sensoric de fects after resorbed hemorrhages under the internal limiting membrane. Materials and Methods: Our patient group consisted of 10 patients with reso rbed premacular hemorrhages, which had been caused by either Vasalva-Manouv er or arterial macroaneurysms. In order to avoid visual field defects due t o other causes, patients with diabetes, retinal vein occlusion and glaucoma were excluded from this study. The investigation was carried out with the Scotometry Programme Vers. 2.01 of the Rodenstock Scanning Laser Ophthalmos cope. Furthermore, fundus photographs were taken. Results: Under condition of no pre-existing retinal pathologies, no scotoma s could be revealed at the site of the preretinal hemorrhage after full res orption. Relative or absolute scotomas could only be found in cases of pre- existing epiretinal gliosis, pigmentepitheliumdefect, persistent subretinal hemorrhages or scars. Conclusion: Since no sensoric defects of the retinal receptors could be det ected, the hypothesis of the extravasal blood having a direct toxic effect on the neuroretina, could not be confirmed in this patient group.