In-vitro evaluation of three lasers for the potential treatment of equine pharyngeal lymphoid hyperplasia

Lloyd P. Tate V.D.M.; Diann L. Weddle D.V.M.; Maria T. Correa

doi:10.1117/12.148339

21 July 1993 In-vitro evaluation of three lasers for the potential treatment of equine pharyngeal lymphoid hyperplasia

Lloyd P. Tate V.D.M., Diann L. Weddle D.V.M., Maria T. Correa

Proceedings Volume 1880, Lasers in Orthopedic, Dental, and Veterinary Medicine II; (1993) https://doi.org/10.1117/12.148339
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

Three medical lasers, Argon, CO₂, and Nd:YAG, were studied at power outputs of 5 watts, 5 watts, and 40 watts respectively. Laser irradiation was directed at the pharyngeal mucosa of sagittally split horses heads in a randomized fashion. Areas irradiated were measured immediately using hand held calipers, and after being prepared for microscopic examination to determine width and depth of penetration into the mucosa. The results indicated that tissue destruction produced by the CO₂ laser was predictable compared to the Nd:YAG laser. The Argon laser, between 1 and 6 seconds of exposure, produced only superficial photoablation of mucosal tissue which did not extend into the muscular layer. The conclusion of this in vitro investigation was that the Argon laser irradiation applied transendoscopically may be a reasonable substitute for surgery and electrocautery commonly used to treat follicular lymphoid hyperplasia, a respiratory disease of young horses.

Citation Download Citation

Lloyd P. Tate V.D.M., Diann L. Weddle D.V.M., and Maria T. Correa "In-vitro evaluation of three lasers for the potential treatment of equine pharyngeal lymphoid hyperplasia", Proc. SPIE 1880, Lasers in Orthopedic, Dental, and Veterinary Medicine II, (21 July 1993); https://doi.org/10.1117/12.148339

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