 |
|
Relative Sensitivity of Various Areas of the Retina to Laser Radiation
Lt Col Paul W. Lappin, BSC, USAF;
Capt Philip S. Coogan, MC, USAF
Arch Ophthalmol. 1970;84(3):350-354.
Abstract
Threshold damage doses for helium-neon (He-Ne) laser radiation were determined in 20 Rhesus monkey eyes at seven selected sites, ranging from 50° nasal to 30° temporal to the macula. The mean damage threshold at the macula was found to be lowest of all examined sites, while the area between the optic disc and the macula was highest. Planimetry measurements of the retinal structures on an excised eye showed the comparative thickness of the nerve fiber layer to be most consistent with the relative sensitivity at the various sites. This layer was found to be thickest at the areas least sensitive to laser irradiation, suggesting that the optic nerve fibers act as an attenuating medium. The high sensitivity of the macula is attributed chiefly to the high density of pigment granules in the macular pigment epithelial cells.
Author Affiliations
Brooks Air Force Base, Tex
From the Department of the Air Force, US Air Force School of Aerospace Medicine, Brooks Air Force Base, Tex. Capt Coogan is now with Presbyterian-St. Luke's Hospital, Chicago.
Footnotes
Submitted for publication Jan 13, 1970.
Reprint requests to Department of the Air Force, US Air Force School of Aerospace Medicine, Brooks Air Force Base, Tex 78235 (Dr. Lappin).
 CiteULike  Connotea  Del.icio.us  Digg  Reddit  Technorati  Twitter
What's this?
THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES
Subthreshold (retinal pigment epithelium) photocoagulation in macular diseases: a pilot study
Roider et al.
Br J Ophthalmol 2000;84:40-47.
ABSTRACT
| FULL TEXT
Experimental Photocoagulation of the Human Retina: I. Correlation of Physical, Clinical, and Pathologic Data
Tso et al.
Arch Ophthalmol 1977;95:1035-1040.
ABSTRACT
Ruby Laser Photocoagulation of the Papillomacular Bundle: An Experimental Study
Watzke and Moore
Arch Ophthalmol 1972;87:684-687.
ABSTRACT
The Retina and Optic Nerve
L'Esperance
Arch Ophthalmol 1971;86:210-232.
|
