20-Gauge vs. 23-Gauge Vitrectomy, in Terms of Surgically Induced Astigmatism
DOI:
https://doi.org/10.37762/jgmds.10-4.487Keywords:
Surgically Induced Astigmatism, Micro-Incision Vitrectomy, 23-Gauge VitrectomyAbstract
OBJECTIVES
To compare the post-operative (post-op) surgically induced mean astigmatism in patients undergoing 20-gauge- and 23-gauge vitrectomy.
METHODOLOGY
Sixty patients were enrolled. Relevant information was recorded in a Performa for each patient. Patients were randomly grouped into A (20-gauge) and B (23-gauge) groups. Astigmatism was recorded by a single technician using the same keratometer for all patients. A single surgeon operated on all patients. Post-operatively, all patients were re-examined after 1 week and 6 weeks, and their surgically induced astigmatism was recorded.
RESULTS
Of 60 patients, 58.6% were males, and 41.4% were females, with a mean age of 53.77 ± 9.63 years. The post-operative astigmatism difference between the two vitrectomy procedures was investigated. In the 20-gauge group, with 30 patients, the mean post-operative astigmatism difference was 2.21 D (±0.66 SD), with a standard error mean of 0.12. In the 23-gauge group, with 30 patients, the mean post-operative astigmatism difference was 0.74 D (±0.44 SD), with a standard error mean of 0.08. The degrees of freedom (df) were 58, and the standard error of the difference was 0.145. The t-value was calculated at 10.1504, and the p-value was found to be 0.001, indicating a significant difference.
CONCLUSION
The observation that the 20-gauge group displayed a notably higher mean difference in astigmatism than the 23-gauge group suggests a potential association between the choice of vitrectomy procedure and the extent of astigmatism alteration in post-operative outcomes.
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Kessner R, Barak A. Pseudophakic rhegmatogenous retinal detachment: combined pars plana vitrectomy and scleral buckle versus pars plana vitrectomy alone. Graefe’s Archive for Clinical and Experimental Ophthalmology. 2016 Jun 1;254(11):2183–9
Batawi H. Pars plana vitrectomy versus combined pars plana vitrectomy and scleral buckle for repair of primary rhegmatogenous retinal detachment with inferior retinal breaks. Morressier; 2020
Nakabayashi M, Fujikado T, Ohji M, Saito Y, Tano Y. Fixation Patterns of Idiopathic Macular Holes After Vitreous Surgery. Retina. 2000 Feb;20(2):170–5.
McDonald HR, Johnson RN, Johnson RN, Ai E, Jumper JM, Fu AD. Vitreoretinal surgery for idiopathic epiretinal membranes. Vitreoretinal Surgical Techniques. Routledge; 2019. p. 325–36
Shah R, Gupta O. Principles and Techniques of Vitreoretinal Surgery. Expert Techniques in Ophthalmic Surgery. Jaypee Brothers Medical Publishers (P) Ltd.; 2015. p. 197–197.
Bilgin AB, Dogan ME, Aysun B, Apaydın KC. Pars plana vitrectomy with or without intraoperative 360° peripheral endolaser for rhegmatogenous retinal detachment treatment. Int Ophthalmol. 2019;39(8):1687–94
Petrovich A. Epidemiological Study of Proliferative Diabetic Retinopathy Treatments for the Vision-Threatening Complications of Diabetic Macular Edema. Endocrinology and Disorders. 2018 Sep 16;2(4):01–3
Henry CR, Schwartz S, Flynn H Jr. Endophthalmitis following pars plana vitrectomy for vitreous floaters. Clinical Ophthalmology. 2014 Aug;1649.
Takai Y, Sakanishi Y, Okamoto M, Ebihara N. Sympathetic ophthalmia after 27-G pars plana vitrectomy. BMC Ophthalmology. 2021 May 2;21(1)
Charles S. 25-Gauge Sutureless Transconjunctival Vitrectomy. Principles and Practice of Vitreoretinal Surgery. Jaypee Brothers Medical Publishers (P) Ltd.; 2014. p. 106–106
Corneal Topographic Changes After Four Types of Pterygium Surgery. Journal of Refractive Surgery. 2008 Jan;24(2):160–5
Watanabe A, Ninomiya W, Mizobuchi K, Watanabe T, Nakano T. Corneal shape changes after vitreoretinal surgery with fluid-gas exchange. Medicine. 2022 May 6;101(18):e29205–e29205
Rush RB, Simunovic MP, Sheth S, Kratz A, Hunyor AP. Pars Plana Vitrectomy Versus Combined Pars Plana Vitrectomy–Scleral Buckle for Secondary Repair of Retinal Detachment. Ophthalmic Surgery, Lasers and Imaging Retina. 2013 Jul;44(4):374–9
Rajappa S, Bhatt H. Minimizing surgically induced astigmatism in non-phaco manual small incision cataract surgery by U-shaped modification of scleral incision. Indian Journal of Ophthalmology. 2020;68(10):2107
Kessner R, Barak A. Pseudophakic rhegmatogenous retinal detachment: combined pars plana vitrectomy and scleral buckle versus pars plana vitrectomy alone. Graefe’s Archive for Clinical and Experimental Ophthalmology. 2016 Jun 1;254(11):2183–9
Tayyab H, Khan AA, Sadiq MAA, Karamat I. Comparison of 23 gauge transconjunctival releasable Suture Vitrectomy with standard 20 gauge Vitrectomy. Pakistan Journal of Medical Sciences. 2018 Apr 5;34(2)
Chaban YV, Popovic MM, Garg A, Muni RH, Kertes PJ. Pars Plana Vitrectomy Port Sizes: A Meta-Analysis of Randomized Controlled Trials. Ophthalmic Surgery, Lasers and Imaging Retina. 2022 Mar;53(3):152–8.
Optics of the Human Eye. Optical Devices in Ophthalmology and Optometry. Wiley; 2014. p. 15–48
Irfan Muslim, Asad Aslam Khan, Nasir Chaudhry. ANATOMICAL AND VISUAL OUTCOME OF COMBINED PHACO-VITRECTOMY VS VITRECTOMY ALONE. Pakistan Postgraduate Medical Journal. 2021 Jun 3;31(04):204–9.
Watanabe T, Gekka T, Watanabe A, Nakano T. Analysis of Changes in Corneal Topography after 27-Gauge Transconjunctival Microincision Vitrectomy Combined with Cataract Surgery. Journal of Ophthalmology. 2019 Jul 10;2019:1–5
Claes C, Lafetá AP. 20 Gauge Sutureless Vitrectomy [Internet]. Minimally Invasive Vitreous Surgery: 20 Gauge to 27 Gauge. Jaypee Brothers Medical Publishers (P) Ltd.; 2013. p. 167–167
Charles S, Ho AC, Dugel PU, Riemann CD, Berrocal MH, Gupta S, et al. Clinical comparison of 27-gauge and 23-gauge instruments on the outcomes of pars plana vitrectomy surgery for the treatment of vitreoretinal diseases. Curr Opin Ophthalmol. 2020;31(3):185–91
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Copyright (c) 2023 Muhammad Tariq Khan, Shafqat Ali Shah, Kaleem Ullah, Muhammad Bilal
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