Changes in Corneal Topography after 23-Gauge Transconjunctival Vitrectomy.

Cho, Hyung Seok; Park, Se Hoon; Yum, Jung Hoon; Lee, Jong Hyun

doi:2012.53.12.1801

J Korean Ophthalmol Soc > Volume 53(12); 2012 > Article

Original Article

Journal of the Korean Ophthalmological Society 2012;53(12):1801-1806.
DOI: https://doi.org/10.3341/jkos.2012.53.12.1801 Published online December 15, 2012.

Changes in Corneal Topography after 23-Gauge Transconjunctival Vitrectomy.

Hyung Seok Cho, Se Hoon Park, Jung Hoon Yum, Jong Hyun Lee

Department of Ophthalmology, Inje University Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea. ophtha@hanmail.net

23게이지 경결막 유리체절제술 후 각막지형도의 변화

조형석⋅박세훈⋅염정훈⋅이종현

Department of Ophthalmology, Inje University Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea

Abstract

PURPOSE
To evaluate the postoperative corneal topographic changes after 23-gauge transconjunctival vitrectomy. METHODS: Twenty eyes of 20 consecutive patients who required vitrectomy were included in the present study. The 23-gauge transconjunctival vitrectomy was performed by a single surgeon from September 2007 through November 2007. Videokeratography system (TMS-4, Tomey Co., Japan) was obtained preoperatively and at 1 day, 2 weeks, and 1 month postoperatively. The date changes of Fourier indices including spherical power, regular astigmatism, asymmetry, and higher-order irregularity were analyzed at the central 3- and 6-mm zone of the cornea. RESULTS: Twenty eyes, including eyes with proliferative diabetic retinopathy (n = 9), vitreous hemorrhage and opacity (n = 7), and epiretinal membrane (n = 4), underwent the operation. None of the Fourier indices significantly changed throughout the observation period (p < 0.05, Wilcoxon-signed-ranks test). CONCLUSIONS: A 23-gauge transconjunctival vitrectomy does not induce significant changes in corneal topography even in the central 6-mm zone, as well as the 3-mm zone of the cornea.

Key Words: Corneal topography;23-Gauge transconjunctival vitrectomy