EFFECT ON CORNEAL DIOPTRIC POWER IN PATIENTS UNDERGOING 23G SUTURE LESS PARS PLANA VITRECTOMY

Objective: To determine the effect of 23-gauge pars plana vitrectomy on corneal dioptric power through a comparison of difference in pre- and post- surgery keratometry. Study Design: Prospective non-comparative interventional type. Place and Duration of Study: The study was conducted at the Armed...

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Autores principales:	Abida Fida, Ahsan Mukhtar, Imran Basit, Fida Hussain, Mazhar Ishaq
Formato:	article
Lenguaje:	EN
Publicado:	Army Medical College Rawalpindi 2018
Materias:	astigmatism dioptric power keratometry pars plana vitrectomy Medicine R Medicine (General) R5-920
Acceso en línea:	https://doaj.org/article/79b820de146e400fa0359b166815e864
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spelling	oai:doaj.org-article:79b820de146e400fa0359b166815e8642021-12-02T03:08:19ZEFFECT ON CORNEAL DIOPTRIC POWER IN PATIENTS UNDERGOING 23G SUTURE LESS PARS PLANA VITRECTOMY0030-96482411-8842https://doaj.org/article/79b820de146e400fa0359b166815e8642018-10-01T00:00:00Zhttps://www.pafmj.org/index.php/PAFMJ/article/view/2288/1984https://doaj.org/toc/0030-9648https://doaj.org/toc/2411-8842Objective: To determine the effect of 23-gauge pars plana vitrectomy on corneal dioptric power through a comparison of difference in pre- and post- surgery keratometry. Study Design: Prospective non-comparative interventional type. Place and Duration of Study: The study was conducted at the Armed Forces Institute of Ophthalmology (AFIO) Rawalpindi from Dec 2016 to Jul 2017. Material and Methods: We studied 33 patients (33 eyes) who underwent 23-gauge vitrectomy with mean age of 46.4 ± 12.8 years. Among them 13 were females and 20 were males. These patients were divided in four groups on the basis of pre-surgical diagnosis. 18 (55%) patients had rhegmatogenous retinal detachment, 9 (27%) had macular holes 3 (9%) with Vitreous hemorrhage and last 3 (9%) had dislocation of intraocular lens. Total vitrectomy was performed in all patients by standard 23G pars plana vitrectomy (PPV) procedure as used with three scleratomies and tunnel shaped incision. Keratometry readings before the surgery and at the end of 1st, 6th and 12th post procedural weeks were recorded in horizontal (K1) and vertical meridian (K2) by utilizing topcon auto kerato-refractometer. Results: The pre-operative dioptric power of cornea in horizontal and vertical meridian (K1 and K2 respectively) was statistically compared with post- operative dioptric power of cornea at the end of 1st, 6th and 12th postopertive weeks. At the end of first post- operative week there was significant difference between pre and post-operative corneal dioptric power with horizontal p-value<0.05 and vertical <0.04; leading to astigmatism. However, at the end of 6th and 12th post procedural weeks there was no significant difference between pre and post-operative corneal dioptric power which is evident with insignificant p-values. The p-value at the end of 6th post-operative week was 0.521 and 0.57 for K1 and K2 respectively. At the end of 12th post-procedural week these values are 0.854 and 0.941 for K1 and K2 respectively. Clinically these patients did not have any sign or symptoms of astigmatism. Conclusion: 23G was found safe procedure in vitreoretinal surgery with no insignificant change in corneal dioptric power except in cases in which silicone oil was used. However, due to small study group and short follow up further studies with longer follow-ups are required to establish the long-term changes in corneal dioptric power after 23G suture less vitrectomyAbida FidaAhsan MukhtarImran BasitFida HussainMazhar IshaqArmy Medical College Rawalpindiarticleastigmatismdioptric powerkeratometrypars plana vitrectomyMedicineRMedicine (General)R5-920ENPakistan Armed Forces Medical Journal, Vol 68, Iss 5, Pp 1186-1189 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	astigmatism dioptric power keratometry pars plana vitrectomy Medicine R Medicine (General) R5-920
spellingShingle	astigmatism dioptric power keratometry pars plana vitrectomy Medicine R Medicine (General) R5-920 Abida Fida Ahsan Mukhtar Imran Basit Fida Hussain Mazhar Ishaq EFFECT ON CORNEAL DIOPTRIC POWER IN PATIENTS UNDERGOING 23G SUTURE LESS PARS PLANA VITRECTOMY
description	Objective: To determine the effect of 23-gauge pars plana vitrectomy on corneal dioptric power through a comparison of difference in pre- and post- surgery keratometry. Study Design: Prospective non-comparative interventional type. Place and Duration of Study: The study was conducted at the Armed Forces Institute of Ophthalmology (AFIO) Rawalpindi from Dec 2016 to Jul 2017. Material and Methods: We studied 33 patients (33 eyes) who underwent 23-gauge vitrectomy with mean age of 46.4 ± 12.8 years. Among them 13 were females and 20 were males. These patients were divided in four groups on the basis of pre-surgical diagnosis. 18 (55%) patients had rhegmatogenous retinal detachment, 9 (27%) had macular holes 3 (9%) with Vitreous hemorrhage and last 3 (9%) had dislocation of intraocular lens. Total vitrectomy was performed in all patients by standard 23G pars plana vitrectomy (PPV) procedure as used with three scleratomies and tunnel shaped incision. Keratometry readings before the surgery and at the end of 1st, 6th and 12th post procedural weeks were recorded in horizontal (K1) and vertical meridian (K2) by utilizing topcon auto kerato-refractometer. Results: The pre-operative dioptric power of cornea in horizontal and vertical meridian (K1 and K2 respectively) was statistically compared with post- operative dioptric power of cornea at the end of 1st, 6th and 12th postopertive weeks. At the end of first post- operative week there was significant difference between pre and post-operative corneal dioptric power with horizontal p-value<0.05 and vertical <0.04; leading to astigmatism. However, at the end of 6th and 12th post procedural weeks there was no significant difference between pre and post-operative corneal dioptric power which is evident with insignificant p-values. The p-value at the end of 6th post-operative week was 0.521 and 0.57 for K1 and K2 respectively. At the end of 12th post-procedural week these values are 0.854 and 0.941 for K1 and K2 respectively. Clinically these patients did not have any sign or symptoms of astigmatism. Conclusion: 23G was found safe procedure in vitreoretinal surgery with no insignificant change in corneal dioptric power except in cases in which silicone oil was used. However, due to small study group and short follow up further studies with longer follow-ups are required to establish the long-term changes in corneal dioptric power after 23G suture less vitrectomy
format	article
author	Abida Fida Ahsan Mukhtar Imran Basit Fida Hussain Mazhar Ishaq
author_facet	Abida Fida Ahsan Mukhtar Imran Basit Fida Hussain Mazhar Ishaq
author_sort	Abida Fida
title	EFFECT ON CORNEAL DIOPTRIC POWER IN PATIENTS UNDERGOING 23G SUTURE LESS PARS PLANA VITRECTOMY
title_short	EFFECT ON CORNEAL DIOPTRIC POWER IN PATIENTS UNDERGOING 23G SUTURE LESS PARS PLANA VITRECTOMY
title_full	EFFECT ON CORNEAL DIOPTRIC POWER IN PATIENTS UNDERGOING 23G SUTURE LESS PARS PLANA VITRECTOMY
title_fullStr	EFFECT ON CORNEAL DIOPTRIC POWER IN PATIENTS UNDERGOING 23G SUTURE LESS PARS PLANA VITRECTOMY
title_full_unstemmed	EFFECT ON CORNEAL DIOPTRIC POWER IN PATIENTS UNDERGOING 23G SUTURE LESS PARS PLANA VITRECTOMY
title_sort	effect on corneal dioptric power in patients undergoing 23g suture less pars plana vitrectomy
publisher	Army Medical College Rawalpindi
publishDate	2018
url	https://doaj.org/article/79b820de146e400fa0359b166815e864
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EFFECT ON CORNEAL DIOPTRIC POWER IN PATIENTS UNDERGOING 23G SUTURE LESS PARS PLANA VITRECTOMY

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