The human fovea after sungazing

M. O M Tso, F. G. La Piana

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Three patients who had malignant melanomas of the uvea and normal foveas agreed to look at the sun for one hour before enucleation of the eyes. Two of the patients sungazed with an undilated pupil, and 24 hours later, recovered their preexposure visual acuity with no detectable scotoma. One of the patients looked at the sun with a partially dilated pupil, and 24 hours later her visual acuity dropped from 20/20 to 20/25. After sungazing, all three eyes exhibited a prolonged recovery time from the photostress test. Fluorescein angiography in two patients showed that there was leakage of dye in the fovea. Fluorescein angiography done two days earlier had revealed no abnormalities. The foveas of all patients were studied by light and electron microscopy. Two patients showed sloughing of necrotic RPE into the subretinal space at the fovea. Degenerative changes and loss of melanin granules were observed in the RPE in the fovea of the third patient. This study shows that in spite of the minimal subjective visual impairment, leakage of fluorescein from the choroidal vasculature and histologic changes in the fovea could be demonstrated after exposure to the sunlight.

Original languageEnglish (US)
Title of host publicationTransactions of the American Academy of Ophthalmology and Otolaryngology
Volume79
Edition6
StatePublished - 1975
Externally publishedYes

Fingerprint

Fluorescein Angiography
Solar System
Pupil
Visual Acuity
Eye Enucleation
Scotoma
Sunlight
Vision Disorders
Melanins
Fluorescein
Melanoma
Electron Microscopy
Coloring Agents
Light
Uveal melanoma

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Tso, M. O. M., & La Piana, F. G. (1975). The human fovea after sungazing. In Transactions of the American Academy of Ophthalmology and Otolaryngology (6 ed., Vol. 79)

The human fovea after sungazing. / Tso, M. O M; La Piana, F. G.

Transactions of the American Academy of Ophthalmology and Otolaryngology. Vol. 79 6. ed. 1975.

Research output: Chapter in Book/Report/Conference proceedingChapter

Tso, MOM & La Piana, FG 1975, The human fovea after sungazing. in Transactions of the American Academy of Ophthalmology and Otolaryngology. 6 edn, vol. 79.
Tso MOM, La Piana FG. The human fovea after sungazing. In Transactions of the American Academy of Ophthalmology and Otolaryngology. 6 ed. Vol. 79. 1975
Tso, M. O M ; La Piana, F. G. / The human fovea after sungazing. Transactions of the American Academy of Ophthalmology and Otolaryngology. Vol. 79 6. ed. 1975.
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