Back
Year : 2013 | Volume : 1 | Issue : 1 | Page : 4 - 7  


Original Articles
Function of filtering bleb after Cataract Surgery in Eyes with Previous Successful Trabeculectomies

Sneh S. Dhannawat1, R. Ramakrishnan2

1Ophthalmologist, 2Professor of Ophthalmology, Aravind Eye Hospital & PG Institute of Ophthalmology, S.N. High Road, Tirunelveli.

Abstract:

Background: It has been reported that cataract surgery can compromise the function of a filtering bleb, resulting in loss of control of intraocular pressure (IOP). In a number of retrospective studies a rise of IOP after extra capsular extraction and even after phacoemulsification in filtered glaucoma eye was shown. Objective: To evaluate the effect of temporal clear corneal Phacoemulsification with Intraocular Lens implantation (IOL) on IOP control in glaucoma patients who had previous successful trabeculectomy. Methods: The clinical course of 60 patients (60 eyes) who underwent temporal clear corneal phacoemulsification after successful trabeculetomy was studied over a period of 3 years. The number of Primary Open Angle Glaucoma (POAG) and Primary Angle Closure Glaucoma (PACG) cases was equal in our study. Comparison of pre-operative and post-operative IOP, visual acuity, bleb morphology and the number of medications was made at follow up interval of 1 month, 3 months, 6 months and 12 months respectively. Results: The mean ± SD IOP before phacoemulsification was 12.2 ± 4.608 mmHg and it increased to 14.98, 14.47, 15.44 and 15.71 after 1, 3, 6 and 12 months respectively. At each interval the mean IOP was significantly higher than the pre-operative value (p = 0.000, 0.015, 0.000, 0.001 respectively) There was also an increase in the number of antiglaucoma medications used after phacoemulsification. The mean ± SD of medication before phacoemulsification was 0.57 + 0.62 and it increased to 0.65, 0.70, 0.68, 0.67 after 1, 3, 6 and 12 months respectively. But the difference was not statistically significant. Conclusion: Temporal clear corneal phacoemulsification significantly increases IOP in eyes with pre-existing functioning filtering bleb. No statistically significant difference was found between the outcomes of POAG and PACG groups. There is a statistically significant improvement in visual acuity following phacoemulsification with intraocular lens implantation.                     

Key Words: Cataract, Filtering surgery, Intraocular pressure, Phacoemulsification, Trabeculectomy

 

Corresponding Author: Dr Sneh. S. Dhannawat, D.N.B (Ophthalmology)

655 south Fairoaks Avenue, Apt E – 203, Sunnyvale, CA 94086, USA, Email id: drsneh80@gmail.com





img

Important links

adv apply rec

Open Access Journal

MRIMS Journal of Health Sciences is an open access journal which means that all content is freely available without charge to the user or his/her institution. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles in this journal without asking prior permission from the publisher of the author. This is in accordance with the BOAI definition of open access.

Visitor Count


225335
© 2017 Chandramma Education society . All Rights Reserved.