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These can include nasal step defects, enlarged blind spots, arcuate scotomas, sectoral field loss and altitudinal defects. [6] Clinical symptoms correlate to visibility of the drusen. [13] Central vision loss is a rare complication of bleeding from peripapillar choroidal neovascular membranes.
Macular hard drusen in the right eye. 65-year-old diabetic woman. Drusen, from the German word for node or geode (singular, "Druse"), are tiny yellow or white accumulations of extracellular material that build up between Bruch's membrane and the retinal pigment epithelium of the eye. The presence of a few small ("hard") drusen is normal with ...
The optic disc in these cases can appear swollen, sometimes accompanied by hemorrhages. [41] In some cases, there might be a phase where the disc appears swollen without immediate vision loss, potentially indicating a precursor to more severe damage. [42] NAION may present with color vision deficiency and a relative afferent pupillary defect.
Over time, however, some people experience a gradual worsening of vision that may affect one or both eyes. [1] While it does not result in complete blindness, loss of central vision can make it hard to recognize faces, drive, read, or perform other activities of daily life. [1] Visual hallucinations may also occur. [1]
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The ganglion cell axons form the optic nerve after they leave the eye. The optic disc represents the beginning of the optic nerve and is the point where the axons of retinal ganglion cells come together. The optic disc in a normal human eye carries 1–1.2 million afferent nerve fibers from the eye toward the brain.