Scotoma (redirected from centrocecal scotoma)

scotoma /sco·to·ma/ (sko-to´mah) pl. scoto´mata  

1. an area of depressed vision in the visual field, surrounded by an area of less depressed or of normal vision.

2. mental s.scotom´atous

---

annular scotoma  circular area of depressed vision surrounding the point of fixation.

central scotoma  an area of depressed vision corresponding with the point of fixation and interfering with central vision.

centrocecal scotoma  a horizontal oval defect in the field of vision situated between and embracing both the point of fixation and the blind spot.

color scotoma  an isolated area of depressed or defective vision for color.

hemianopic scotoma  depressed or lost vision affecting half of the central visual field.

mental scotoma  a figurative blind spot in a person's psychological awareness, the person being unable to gain insight into and to understand their mental problems; lack of insight.

negative scotoma  one which appears as a blank spot or hiatus in the visual field, the patient being unaware of it.

peripheral scotoma  an area of depressed vision toward the periphery of the visual field, distant from the point of fixation.

physiologic scotoma  that area of the visual field corresponding with the optic disk, in which the photosensitive receptors are absent.

positive scotoma  one which appears as a dark spot in the visual field, the patient being aware of it.

relative scotoma  an area of the visual field in which perception of light is only diminished, or loss is restricted to light of certain wavelengths.

ring scotoma  annular s.

scintillating scotoma  teichopsia.

---

sco·to·ma (sk-tm)

n. pl. sco·to·mas or sco·to·ma·ta (-m-t)

1. An area of diminished vision within the visual field.

2. See blind spot.

---

Scotoma

An area of lost or depressed vision within the visual field surrounded by an area of normal vision. Survivors of retinoblastoma frequently develop scotomas.

Mentioned in: Retinoblastoma

---

scotoma Neurology A vision defect Psychiatry A figurative blind spot in a person's awareness