Comparison of Refractive Changes Following Pseudophakic Vitrectomy with or without Gas Tamponade

Authors : Sami YILMAZ, Ayşegül MAVİ YILDIZ, Mehmet Emin ASLANCI, Remzi AVCI

Pages : 252-256

Doi:10.19127/bshealthscience.902131

View : 42 | Download : 8

Publication Date : 2021-09-01

Article Type : Research Paper

Abstract :To compare refractive changes following 23-gauge insert ignore into journalissuearticles values(G); vitrectomy with or without gas tamponade in pseudophakic eyes. This retrospective study included patients with neodymium: yttrium-aluminum-garnet insert ignore into journalissuearticles values(Nd: YAG); laser capsulotomy, who underwent 23 G pars plana vitrectomy insert ignore into journalissuearticles values(PPV); between February 2015 and March 2019. Indications for surgery included; rhegmatogenous retinal detachment in Group 1 and epiretinal membrane or vitreous hemorrhage insert ignore into journalissuearticles values(VH); in Group 2. Gas tamponade 12% perflouropropane insert ignore into journalissuearticles values(C3F8); was used in Group 1 whereas no tamponade was used in Group 2. The minimum follow-up was 24 months for both groups. A total of 47 patients were recruited insert ignore into journalissuearticles values(Group 1, n=27 and Group 2, n=20);. The visual acuity improvement was statistically significant in both groups insert ignore into journalissuearticles values(p<0.001);. A statistically significant myopic shift was observed in both groups [-0.40±0.54 diopter insert ignore into journalissuearticles values(D); insert ignore into journalissuearticles values(P=0.001); in Group 1; -0.17±0.29 D insert ignore into journalissuearticles values(P=0.017); in Group 2]. In addition, a myopic shift greater than 1 D was observed in 2 eyes insert ignore into journalissuearticles values(7.4%); in Group 1. The significant hyperopic shift was detected in 3 eyes insert ignore into journalissuearticles values(11.1%); in Group 1 and 5 eyes insert ignore into journalissuearticles values(25%); in Group 2. Surgically induced astigmatism was similar between groups [0.46±0.25 D in Group 1 and 0.54±0.26 D in Group 2, insert ignore into journalissuearticles values(P=0.314);]. Postoperative complications included VH insert ignore into journalissuearticles values(n=1/27); and macular hole insert ignore into journalissuearticles values(n=1/27); in Group 1. The clinically significant myopic shift may occur following 23 G vitrectomy in pseudophakic eyes. Eyes with gas tamponade are more prone to myopic shift, possibly due to anterior movement of the intraocular lens. Therefore, targeting slight residual hyperopia insert ignore into journalissuearticles values(+0.50 D); might be suggested in patients with gas tamponade.
Keywords : Pars plana vitrectomy, Myopic shift, Induced astigmatism, Pseudophakic eyes, Gas tamponade

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