Multiple wavelength laser suture lysis without slit lamp biomicroscopy in human cadaver eyes

Kian M. Kaz; Karen Margaret Joos M.D.; Jin-Hui Shen; Debra J. Shetlar

doi:10.1117/12.275119

26 May 1997 Multiple wavelength laser suture lysis without slit lamp biomicroscopy in human cadaver eyes

Kian M. Kaz, Karen Margaret Joos M.D., Jin-Hui Shen, Debra J. Shetlar

Proceedings Volume 2971, Ophthalmic Technologies VII; (1997) https://doi.org/10.1117/12.275119
Event: BiOS '97, Part of Photonics West, 1997, San Jose, CA, United States

Abstract

Trabeculectomy with early postoperative slit lamp laser suture lysis is a controlled means of maximizing bleb filtration and reducing intraocular pressure. However, this procedure is not possible in children and even some adults. Thus, an effective alternative method for postoperative laser suture lysis was investigated. Dissection of 15 scleral flaps was performed on two human cadaver eyes. Each flap was closed with two 10-0 nylon sutures and the conjunctiva repositioned to cover the sutures. Laser suture lysis was performed using an optical fiber probe for the Argon/Dye laser and a Hoskins laser lens. Five different wavelengths were studied: red (630 nm), orange (595 nm), yellow (577 nm), blue-green (488 - 514 nm), and green (514 nm). Each individual wavelength was studied using six scleral flap sutures, and a single laser application was applied to each suture. Suture lysis was attainable with each wavelength, however the argon green lysed 100 percent of the sutures. Histologic analysis demonstrated no conjunctival injury with any of the above wavelengths. These findings suggest that multiple wavelengths are effective in laser suture lysis without a slit lamp biomicroscope.

Citation Download Citation

Kian M. Kaz, Karen Margaret Joos M.D., Jin-Hui Shen, and Debra J. Shetlar "Multiple wavelength laser suture lysis without slit lamp biomicroscopy in human cadaver eyes", Proc. SPIE 2971, Ophthalmic Technologies VII, (26 May 1997); https://doi.org/10.1117/12.275119

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