HISTOPATHOLOGIC EVALUATION OF OPTIC NEUROTOMY WITH MVR BLADE AND EXCIMER LASER IN CADAVER EYES

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SOHEYLIAN MASOUD; REZAEI KANAVI M.; YAZDANI SHAHIN; ROFAGHA S.; PEYMAN GH.A.

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Journal: BINA Year:2007 | Volume:12 | Issue:4 (49) Page(s): 440-445

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Title

HISTOPATHOLOGIC EVALUATION OF OPTIC NEUROTOMY WITH MVR BLADE AND EXCIMER LASER IN CADAVER EYES

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Abstract

Purpose: To evaluate the histopathologic features of optic neurotomy with microvitreoretinal (MVR) blade and excimer laser in cadavereyes.Method: Optic neurotomy was performed in 11 cadaver eyes using 20-gauge MVR blade and in three cadaver eyes with pulsed xenon chloride (XeCl) excimer laser (308nm) via monofile light conducting fiber with a core diameter of 200 microns. After tissue processing, hematoxylin and eosin stained slides were used to evaluate the posterior segment of the globes, including the optic nerve head.Results: None of the cases in the MVR neurotomy group had sclera macro- or micro-perforation and no injury was induced to the central retinal vein or artery. In 10 cases, the distance between the neurotomy site and the central retinal vessels ranged from 50 to 500m at all histologic levels. In one remaining case this distance was approximately 10m on two histologic sections and about 200m at a third level. Intra-neural hemorrhage was found in 18% of cases. Neurotomy was successfully induced in two of three cases attempted with the excimer laser. In one case, due to cloudy media, it was not apparent whether the laser successfully induced the neurotomy and no neurotomy was evident on sectioning.Conclusion: MVR induced optic neurotomyis an effective procedure to create scleral outlet relaxation, without significant surgical complications such as scleral perforation or central retinal vascular injury. This preliminary study also demonstrates that the XeCl excimer laser can make non-mechanical cuts with relative ease and reliability.

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APA: Copy

SOHEYLIAN, MASOUD, REZAEI KANAVI, M., YAZDANI, SHAHIN, ROFAGHA, S., & PEYMAN, GH.A.. (2007). HISTOPATHOLOGIC EVALUATION OF OPTIC NEUROTOMY WITH MVR BLADE AND EXCIMER LASER IN CADAVER EYES. BINA, 12(4 (49)), 440-445. SID. https://sid.ir/paper/43063/en

Vancouver: Copy

SOHEYLIAN MASOUD, REZAEI KANAVI M., YAZDANI SHAHIN, ROFAGHA S., PEYMAN GH.A.. HISTOPATHOLOGIC EVALUATION OF OPTIC NEUROTOMY WITH MVR BLADE AND EXCIMER LASER IN CADAVER EYES. BINA[Internet]. 2007;12(4 (49)):440-445. Available from: https://sid.ir/paper/43063/en

IEEE: Copy

MASOUD SOHEYLIAN, M. REZAEI KANAVI, SHAHIN YAZDANI, S. ROFAGHA, and GH.A. PEYMAN, “HISTOPATHOLOGIC EVALUATION OF OPTIC NEUROTOMY WITH MVR BLADE AND EXCIMER LASER IN CADAVER EYES,” BINA, vol. 12, no. 4 (49), pp. 440–445, 2007, [Online]. Available: https://sid.ir/paper/43063/en

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