<Tr> <Th> MeSH </Th> <Td> D012607 </Td> </Tr> <Tr> <Td_colspan="2"> (edit on Wikidata) </Td> </Tr> <P> A scotoma (Greek σκότος / skótos, darkness; plural: scotomas or scotomata) is an area of partial alteration in the field of vision consisting of a partially diminished or entirely degenerated visual acuity that is surrounded by a field of normal--or relatively well - preserved--vision . </P> <P> Every normal mammal eye has a scotoma in its field of vision, usually termed its blind spot . This is a location with no photoreceptor cells, where the retinal ganglion cell axons that compose the optic nerve exit the retina . This location is called the optic disc . There is no direct conscious awareness of visual scotomas . They are simply regions of reduced information within the visual field . Rather than recognizing an incomplete image, patients with scotomas report that things "disappear" on them . </P>

A person with blind spots or scotomas is suffering from which disease of the eye