Of 230 patients with homonymous visual field defects of central origin, 3 had paracentral scotomas. All complained of severe photophobia and difficulty in reading. Two patients suspected that the scotoma had developed as a result of glare; the visual disorder resolved in these cases, but persisted
Bright light illumination (photostress) of the macula produces a negative after-image in the form of a central scotoma. The time needed for restoring normal visual acuity function, "macular recovery time," may be measured using a nyctometer. We have measured the recovery in 30 normal men, aged 18 to
BACKGROUND
Hypobaric hypoxic exposures are associated with a number of risks, most notably decompression sickness and various ophthalmologic disorders, including high altitude retinopathy. Central serous chorioretinopathy (CSCR) is an idiopathic condition that typically affects young males and is
OBJECTIVE
To explore the characteristics of optic neuropathy and retinopathy subsequent to radiotherapy of nasopharyngeal carcinoma (NPC).
METHODS
Sixty-eight eyes from 34 patients with fundus disease and visual disturbance after NPC radiotherapy were studied by vision testing, fundus examination,
The diversity of pathogenetic mechanisms involved in posttraumatic visual impairment was reviewed in a study of the hospital records of 24 patients admitted with multiple injuries. Most major visual abnormalities occurred in young people (average age 33 years) who presented with a wide range of
BACKGROUND
To report a case of severe vitamin B(12) deficiency anemia presenting with white centered retinal hemorrhages.
METHODS
Interventional case report.
RESULTS
A 40-year-old man, general practitioner himself, presented with a 1-day history of diminished left visual acuity and a drop-shaped
OBJECTIVE
To report three cases of vision loss occurring at high altitude.
METHODS
Three patients aged 27 to 52 years presented with scotoma and/or visual acuity deficit upon their return from high altitude expeditions above 6000 m. Fundus examination revealed multiple posterior pole hemorrhages,
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