Comparison of small-incision phacoemulsification with standard extracapsular cataract surgery: Postoperative astigmatism and visual recovery

Eye ◽  
1992 ◽  
Vol 6 (6) ◽  
pp. 626-629 ◽  
Author(s):  
Allan Watson ◽  
Palaniswamy Sunderraj
Keyword(s):  
Cataract Surgery ◽  
Visual Recovery ◽  
Small Incision ◽  
Postoperative Astigmatism ◽  
Extracapsular Cataract Surgery

scholarly journals A comparative study of post-operative astigmatism in superior versus superotemporal scleral incisions in manual small incision cataract surgery in a tertiary care hospital

2021 ◽  
Vol 5 (2) ◽  
pp. 009-015
Author(s):  
Hazra Soumyadeep ◽  
Saha Tapes Kanti
Keyword(s):  
Visual Acuity ◽  
Cataract Surgery ◽  
Tertiary Care Hospital ◽  
Tertiary Care ◽  
Visual Outcome ◽  
Care Hospital ◽  
Small Incision Cataract Surgery ◽  
Small Incision ◽  
Postoperative Astigmatism ◽  
Number Of Patients

Background: In developing countries, manual small incision cataract surgery is a better alternative and less expensive in comparison to phacoemulsification and thus the incision is an important factor causing high rates of postoperative astigmatism resulting into poor visual outcome. Thus, modifications to the site of the incision is needed to reduce the pre-existing astigmatism and also to prevent postoperative astigmatism. Modification to superotemporal incision relieves pre-existing astigmatism majorly due to its characteristic of neutralizing against-the-rule astigmatism, which is more prevalent among elderly population and thus improves the visual outcome. Aims: To study the incidence, amount and type of surgically induced astigmatism in superior and superotemporal scleral incision in manual SICS. Methodology: It is a randomized, comparative clinical study done on 100 patients attending the OPD of Ophthalmology at a tertiary care hospital, with senile cataract within a period of one year and underwent manual SICS. 50 of them chosen randomly for superior incision and rest 50 with superotemporal incision. MSICS with PCIOL implantation were performed through unsutured 6.5 mm scleral incision in all. Patients were examined post-operatively on 1st day, 7th day, 2nd week and 4th week and astigmatism was evaluated and compared in both groups. Results: It is seen that on postoperative follow up on 4th week, 77.78% of the patients with ATR astigmatism who underwent superior incision had increased astigmatism whereas, only 13.63% of the patients with ATR astigmatism who underwent supero-temporal incision, had increased astigmatism but 81.82% had decreased ATR astigmatism. However, 77.78% of the patients with preoperative WTR astigmatism who underwent supero-temporal incision, had increased astigmatism, whereas 44.45% of the patients with WTR astigmatism preoperatively, had increased astigmatism in contrast to 50% had decreased amount of astigmatism. It is also seen that the supero-temporal incision group had more number of patients (78%) with visual acuity better than 6/9 at 4th postoperative week than superior incision group (42%). Conclusion: This study concludes that superior incision cause more ATR astigmatism postoperatively whereas superotemporal incision causes lower magnitude of WTR astigmatism, which is advantageous for the elderly. Besides superotemporal incision provides better and early visual acuity postoperatively.

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

scholarly journals Improved refractive outcomes of small-incision extracapsular cataract surgery after implementation of a biometry training course

2019 ◽  
Vol 26 (1) ◽  
pp. 17
Author(s):  
JayJ Meyer ◽  
HansR Vellara ◽  
Riyaz Bhikoo ◽  
LucillaAh-Ching Sefo ◽  
Salome Lolokabaira ◽  
...  
Keyword(s):  
Cataract Surgery ◽  
Training Course ◽  
Small Incision ◽  
Refractive Outcomes ◽  
Extracapsular Cataract Surgery

Astigmatism in Straight and Frown Incision in Small Incision Cataract Surgery: A Comparative Study

2017 ◽  
Vol 2 (3) ◽  
pp. 111-116
Author(s):  
Sanjay Gupta ◽  
M Srinivasan ◽  
Shweta Tripathi
Keyword(s):  
Comparative Study ◽  
Cataract Surgery ◽  
Posterior Chamber ◽  
Age Group ◽  
Small Incision Cataract Surgery ◽  
Small Incision ◽  
Incision Size ◽  
Postoperative Astigmatism ◽  
Department Of Ophthalmology ◽  
Significant Difference

ABSTRACT Introduction Blindness due to cataract presents an enormous problem especially in developing countries like India, not only in terms of human morbidity but also in terms of economic loss and social burden. The cataract surgeon of today is challenged to control the sphere as well as the cylinder of the refraction after surgery. Small incision cataract surgery (SICS) is now the method of choice in many parts of the world. This present study has been carried out with the aim to compare the postoperative corneal astigmatism between the two groups of patients undergoing SICS with posterior chamber intraocular lens (PCIOL) implantation with two difference types of incisions, i.e., frown and straight. Material and methods A prospective study was carried out in 60 patients enrolled from the Department of Ophthalmology of Pondicherry Institute of Medical Sciences who underwent SICS with superiorly placed straight and frown incision with PCIOL (each group consisting of 30 patients) during the period from May 2005 to October 2006. Results In this study, 60 patients having senile cataract in the age group of 50 to 75 years were studied. Out of these, the majority were in the age group of 60 to 64 (28.33%) years and only 26.66% were more than 70 years. The male:female ratio was 1:1. In our study, we found that frown incision had significantly better (p < 0.001) mean net astigmatism as compared with the straight incision. Conclusion We conclude that small incision size and absence of suture are the most important factors that contribute to less astigmatism and faster stabilization of SICS, where phacoemulsification cannot be performed. The duration for stabilization of postoperative astigmatism in straight incision group is 6 weeks, whereas it is 3 weeks in frown incision. Frown superior incision has got added advantage of early wound stabilization than straight incision, allowing the patient to resume their daily activities at an early stage. Superior incision group (both frown and straight) had increased amount of with-the-rule (WTR) astigmatism which later shifted to against-the-rule. There was a significant difference in net astigmatism between frown and straight. Postoperative astigmatism also depends on preoperative astigmatism. Patients with preoperative WTR benefited from superior incision cataract surgery. How to cite this article Tripathi S, Srinivasan M, Gupta S. Astigmatism in Straight and Frown Incision in Small Incision Cataract Surgery: A Comparative Study. Int J Adv Integ Med Sci 2017;2(3):111-116.

Manual small incision extracapsular cataract surgery in Australia

2014 ◽  
Vol 42 (8) ◽  
pp. 729-733 ◽  
Author(s):  
Lourens van Zyl ◽  
Shyalle Kahawita ◽  
Michael Goggin
Keyword(s):  
Cataract Surgery ◽  
Small Incision ◽  
Extracapsular Cataract Surgery
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