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Proceedings Paper

Q-switched ruby laser therapy of nevus of Ota
Author(s): Roy G. Geronemus
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Paper Abstract

The Q-switched ruby laser has been demonstrated to provide selective photothermolysis of pigmented tissue at a wavelength of 694 nm and a pulsewidth of 40 nanoseconds. It was utilized to treat 15 patients with nevus of Ota involving the face with an age range of 6 - 52 years. Eleven of the 15 patients were Asian, 2 were Caucasian, 1 was Hispanic, and 1 was Indian. The energy fluence utilized varied between 6 and 10 J/cm2, and the number of treatments ranged from 1 to 7. Significant lightening or clearing was noted at the higher energy ranges of 9 - 10 J/cm2 with significantly less lightening noted at the lower energy range of 6 - 8.5 J/cm2. No scarring was noted in any of the 15 patients, and some isolated hypopigmentation was noted in one of the subjects. Transient post-inflammatory hyperpigmentation was noted in only one patient. Complete clearing has been noted in four patients. Q-switched ruby selective photothermolysis appears to be an effective and safe method of lightening or removing nevus of Ota.

Paper Details

Date Published: 1 June 1992
PDF: 3 pages
Proc. SPIE 1643, Laser Surgery: Advanced Characterization, Therapeutics, and Systems III, (1 June 1992); doi: 10.1117/12.137356
Show Author Affiliations
Roy G. Geronemus, New York Univ. School of Medicine (United States)


Published in SPIE Proceedings Vol. 1643:
Laser Surgery: Advanced Characterization, Therapeutics, and Systems III
R. Rox Anderson, Editor(s)

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