scholarly journals Postoperative Corneal and Surgically Induced Astigmatism following Superior Approach Manual Small Incision Cataract Surgery in Patients with Preoperative Against-the-Rule Astigmatism

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Edmund Arthur ◽  
Ahmed Abdul Sadik ◽  
David Ben Kumah ◽  
Eugene Appenteng Osae ◽  
Felix Agyemang Mireku ◽  
...  
Keyword(s):  
Corneal Astigmatism ◽  
Rank Test ◽  
Small Incision Cataract Surgery ◽  
Small Incision ◽  
Postoperative Astigmatism ◽  
Signed Rank ◽  
Signed Rank Test ◽  
Induced Astigmatism ◽  
Superior Approach ◽  
Surgically Induced

The aim of the study was to report postoperative corneal and surgically induced astigmatism (SIA) in patients with preoperative against-the-rule (ATR) astigmatism who underwent superior approach manual small incision cataract surgery (MSICS). 58 eyes of 58 cataract patients with preoperative ATR astigmatism were involved in this study. All patients had operable cataracts and underwent superior approach MSICS. Keratometric (K) readings were taken prior to surgery and at 12 weeks after surgery. Centroid values of SIA, preoperative astigmatism, and postoperative astigmatism were calculated using Cartesian coordinates based analysis. Wilcoxon signed rank test was used to compute statistical significance between mean preoperative and postoperative corneal astigmatism. Cohen’sdwas used as effect size measure. Centroid values of 1.42 D × 179, 2.48 D × 0, and 1.07 D × 1 were recorded, respectively, for preoperative astigmatism, postoperative astigmatism, and SIA. Wilcoxon signed rank test indicated that mean ± SD postoperative corneal astigmatism (2.80±1.40 D) was statistically significantly greater than preoperative corneal astigmatism (1.49±1.34 D),Z=-6.263,p<0.0001. A high Cohen’sdof 1.32 was found. Our results suggest statistical and clinically significant greater postoperative corneal astigmatism than preoperative corneal astigmatism for ATR astigmatism cataract patients who underwent superior approach MSICS.

scholarly journals A COMPARATIVE STUDY OF SURGICALLY INDUCED ASTIGMATISM IN SUPERIOR AND TEMPORAL SCLERAL INCISION IN MANUAL SMALL INCISION CATARACT SURGERY AT SKMCH, MUZAFFARPUR, BIHAR

2020 ◽  
pp. 1-3
Author(s):  
Md. Imamul Hoda ◽  
Shiv Kumar ◽  
R. K. Singh ◽  
Debarshi Jana
Keyword(s):  
Comparative Study ◽  
Cataract Surgery ◽  
Visual Outcome ◽  
Small Incision Cataract Surgery ◽  
Surgically Induced Astigmatism ◽  
Small Incision ◽  
Incision Size ◽  
Postoperative Astigmatism ◽  
Induced Astigmatism ◽  
Surgically Induced

Aim: To evaluate the amount and type of surgically induced astigmatism in superior and temporal scleral incision inManual Small Incision Cataract Surgery (MSICS). Material and Methods: A prospective randomized comparative study was carried out in 100 cases of senile or pre-senile cataract. All the patients underwent MSICS under peribulbaranaesthesia. The patients with very hard cataract were excluded so as to keep the incision size uniformity (6-6.5mm). 50 cases received superior scleral incision and 50 cases received temporal scleral incision. Post operative astigmatism was studied in both groups using Bausch & Lomb Keratometer on 1stday, 7thday, 6thweek and 3rdmonth. Results: After 3 months of surgery, out of 50 patients in superior scleral incision group 74% patients had ATRastigmatism and 16% patients had WTR astigmatism whereas in temporal scleral incision group 56 % of the patients had WTR astigmatism and 36 % had ATR astigmatism. The mean surgically induced astigmatism (SIA) in temporal incision group was significantly less than the superior incision group after 3 months postoperatively (t=2.33, p<0.05). Conclusion: This study reveals that temporal approach MSICS produces less postoperative astigmatism and hasmanifold advantages over superior incision MSICS with excellent visual outcome.

scholarly journals Comparative study between conventional extra capsular cataract extraction versus manual small incision cataract surgery

2017 ◽  
Vol 5 (3) ◽  
pp. 996 ◽  
Author(s):  
Gannaram Laxmiprasad ◽  
Chhaya Shori ◽  
Rakesh Shori ◽  
Ashalatha Alli
Keyword(s):  
Cataract Surgery ◽  
Tertiary Care ◽  
Posterior Chamber ◽  
Small Incision Cataract Surgery ◽  
Visual Rehabilitation ◽  
Surgically Induced Astigmatism ◽  
Small Incision ◽  
Significant Difference ◽  
Induced Astigmatism ◽  
Surgically Induced

Background: Recent reports indicate that both manual small incision cataract surgery and extra capsular cataract excision surgery with posterior chamber intraocular lens implantation are safe and effective for treatment of cataract surgery, however, manual small incision cataract surgery gives better uncorrected vision. Objectives of the study were to compare intraoperative and postoperative complications, to compare induced astigmatism and to compare the visual rehabilitation.Methods: This is a prospective study of 100 consecutive patients assigned to undergo conventional extra capsular cataract excision surgery (50 cases) and manual small incision cataract surgery (50 cases). Study was done for a period of two years at a tertiary care referral hospital. Institutional Ethics Committee permission was taken. Also the informed consent was obtained from each patient.Results: In conventional ECCE, the most common surgically induced astigmatism was WTR in 73.4% of cases with mean of 2.79 D±1.3 on first day. 70% of cases with mean 2.1 D±1.28 and 64% of cases with mean of 1.86 D±1.14 at six weeks. ATR was common in MSICS group, 83.67% of cases with mean of 1.5 D±0.72 on first day, 86% of cases with mean of 1.03 D±0.6 at one week and 88% of cases with mean of 1.27 D±0.81 at six weeks. The induced astigmatism was less in MSICS group compared to ECCE group at first day but after six weeks there was no much significant difference found. Early visual recovery was better in MSICS groupConclusions: MSICS has definitive advantages over conventional ECCE in terms of early visual rehabilitation, minimal surgically induced astigmatism; no suture related complications and reduced surgical time.

scholarly journals COMPARISON OF POSTOPERATIVE CORNEAL ASTIGMATISM IN PHACOEMULSIFICATION AND MANUAL SMALL INCISION CATARACT SURGERY

2020 ◽  
pp. 85-88
Author(s):  
NAYANTARA NAIR ◽  
DIVYA N. ◽  
V. PANIMALAR ◽  
A. VEERAMANI ◽  
BINDU BHASKARAN
Keyword(s):  
Cataract Surgery ◽  
Tamil Nadu ◽  
Tertiary Care ◽  
Significant Proportion ◽  
Surgical Correction ◽  
Corneal Astigmatism ◽  
Care Hospital ◽  
Small Incision Cataract Surgery ◽  
Small Incision ◽  
Postoperative Astigmatism

Objective: Globally a significant proportion of treatable blindness is caused by cataract, especially in India and southeast Asia. Treatment of cataract is surgical correction with intraocular lens implantation. The main drawback of surgical correction is induction of postoperative astigmatism in patients. The aim of this study was to compare the degree of astigmatism in manual small incision cataract surgery and phacoemulsification 3 mo postoperatively Methods: The study was a retrospective case study on postoperative corneal astigmatism after cataract surgery. It was conducted in a tertiary care hospital in Thandalam, Tamil Nadu. A total of 100 patients were selected and divided into two groups, group A (=50) underwent phacoemulsification and group B (=50) underwent manual small incision cataract surgery. Preoperative astigmatic status of the patients was noted from patient records. Both groups were evaluated 3 mo postoperatively using automated keratometry. The data collected was analyzed using Microsoft Excel Independent T test, p<0.05 was considered statistically significant. Power of the study was 80% with an alpha error of 5%. Results: Mean postoperative astigmatism at 3 mo was 0.91±0.255D and 0.34±0.110D due to manual small incision cataract surgery and phacoemulsification, respectively. Conclusion: Postoperative astigmatism was greater in manual small incision cataract surgery than phacoemulsification. Improvement in preoperative astigmatism was seen in patients who underwent superotemporal incision phacoemulsification

A COMPARATIVE STUDY OF SURGICALLY INDUCED ASTIGMATISM IN SUPERIOR AND TEMPORAL SCLERAL INCISION IN MANUAL SMALL INCISION CATARACT SURGERY

2021 ◽  
pp. 1-3
Author(s):  
Nitu Kumari ◽  
Kumari Preeti ◽  
Alka Jha ◽  
Debarshi Jana
Keyword(s):  
Comparative Study ◽  
Cataract Surgery ◽  
Visual Outcome ◽  
Small Incision Cataract Surgery ◽  
Surgically Induced Astigmatism ◽  
Small Incision ◽  
Incision Size ◽  
Department Of Ophthalmology ◽  
Induced Astigmatism ◽  
Surgically Induced

Aim: To evaluate the amount and type of surgically induced astigmatism in superior and temporal scleral incision in Manual Small Incision Cataract Surgery (MSICS). Material and Methods: A prospective randomized comparative study was carried out in Upgraded Department of Ophthalmology, DMCH, Laheriasarai, Bihar. Total 100 cases of senile or pre-senile cataract included in this study from July 2019 to December 2019. All the patients underwent MSICS under peribulbar anaesthesia. The patients with very hard cataract were excluded so as to keep the incision size uniformity (6- 6.5mm). 50 cases received superior scleral incision and 50 cases received temporal scleral incision. Post operative astigmatism was studied in both groups using Bausch & Lomb Keratometer on 1st day, 7th day, 6th week and 3rd month. Results: After 3 months of surgery, out of 50 patients in superior scleral incision group 74% patients had ATR astigmatism and 16% patients had WTR astigmatism whereas in temporal scleral incision group 56 % of the patients had WTR astigmatism and 36 % had ATR astigmatism. The mean surgically induced astigmatism (SIA) in temporal incision group was signicantly less than the superior incision group after 3 months postoperatively (t=2.33, p<0.05). Conclusion: This study reveals that temporal approach MSICS produces less postoperative astigmatism and has manifold advantages over superior incision MSICS with excellent visual outcome.

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