Fiber optically-guided CO2 laser myringotomy through an otoscope: animal experimentation

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Abstract

We have developed an otoscope which contains an optical fiber capable of transmitting CO 2 laser energy. Such a hand-held unit may prove useful in the treatment of acute otitis media and otitis media with effusion. We used crystalline fibers (0.9 mm diameter) capable of transmitting CO2 laser energy. Four guinea pigs were anaesthetized. In one ear a laser myringotomy was performed using 7.5 watts for 0.1 seconds. The diameter of the myringotomy was 1.5 mm. In the other ear a similar conventional myringotomy was performed. After three weeks three laser and three conventional myringotomies were closed. On the average conventional myringotomies closed 50% sooner than laser myringotomies. Temporal bones from three guinea pigs were removed and sectioned according to accepted methods. No histological differences were found between ears. This experiment has proven the feasibility of using an otoscope for fiberoptically guided CO2 laser myringotomy.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Int Soc for Optical Engineering
Pages236-240
Number of pages5
ISBN (Print)081940795X
StatePublished - 1992
Externally publishedYes
EventOptical Fibers in Medicine VII - Los Angeles, CA, USA
Duration: 21 Jan 199222 Jan 1992

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume1649
ISSN (Print)0277-786X

Conference

ConferenceOptical Fibers in Medicine VII
CityLos Angeles, CA, USA
Period21/01/9222/01/92

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