scholarly journals Outcome of Best Corrected Visual Acuity Following Surgically Induced Astigmatism in Manual Small Incision Cataract Surgery

2020 ◽  
Vol 08 (01) ◽  
Author(s):  
Dr Raktima Baksi (Mandal) ◽  
Keyword(s):  
Visual Acuity ◽  
Cataract Surgery ◽  
Small Incision Cataract Surgery ◽  
Surgically Induced Astigmatism ◽  
Small Incision ◽  
Corrected Visual Acuity ◽  
Induced Astigmatism ◽  
Surgically Induced ◽  
Best Corrected Visual Acuity

scholarly journals A comparative study of sclero-corneal and clear corneal tunnel incision in manual small-incision cataract surgery

1970 ◽  
Vol 3 (1) ◽  
pp. 19-22
Author(s):  
S Archana ◽  
AK Khurana ◽  
U Chawla
Keyword(s):  
Visual Acuity ◽  
Cataract Surgery ◽  
Posterior Chamber ◽  
Small Incision Cataract Surgery ◽  
Surgically Induced Astigmatism ◽  
Small Incision ◽  
Group A ◽  
Induced Astigmatism ◽  
Group B ◽  
Surgically Induced

Background: Cataract surgery techniques have improved a lot over the years from couching to the latest micro-incision cataract surgery. Objectives: To compare the temporal sclero-corneal and clear corneal tunnel incisions in patients undergoing manual small-incision cataract surgery (SICS) with respect to the surgically-induced astigmatism. Materials and methods: The present study included 60 patients who underwent manual SICS with posterior chamber intraocular lens implantation. Group A comprised of 30 patients, selected randomly, who underwent sutureless manual SICS through 6 mm curvilinear clear corneal tunnel incision made temporally and Group B comprised of 30 patients, selected randomly, who underwent sutureless manual SICS through 6 mm straight sclero-corneal tunnel made temporally. The patients were assessed at 1 week, 2 weeks, 1 month and 2 months post-operatively and visual acuity and keratometry findings were recorded. The amount of surgically induced astigmatism was calculated using Holladay’s formula. Statistics: Numerical data were compared between the two groups using unpaired Student’s t-test. The p value of < 0.50 was considered significant. Results: The mean induced astigmatism in Group A was 2.69 ± 0.84 D at 1 week, 2.31 ± 0.77 D at 2 weeks; 2.03 ± 0.82 D at 4 weeks and 1.98 ± 0.54 D at 8 weeks post-operatively. In group B, it was 1.85 ± 0.62 D, 1.56 ± 0.54 D, 1.35 ± 0.49 D and 1.34 ±0.45 D at 1 week, 2 weeks, 4 weeks and 8 weeks postoperatively. Uncorrected visual acuity (UCVA) of 20/ 20 was seen in 20 % of patients in group A and in 40 % in group B at 8 weeks postoperatively. Conclusion: Surgically-induced astigmatism is significantly higher in clear corneal manual SICS than in sclero-corneal. Our study confirmed the safety and improvement in visual acuity after small-incision cataract surgery using sclero-corneal tunnel incision. Key words: astigmatism; sclero-corneal; clear corneal tunnel; extra-capsular cataract surgery; small incision cataract surgery DOI: 10.3126/nepjoph.v3i1.4273Nepal J Ophthalmol 2011;3(5):19-22

scholarly journals Randomized Controlled Trial of varied incision sites in Manual Small Incision Cataract Surgery done in a Medical College Hospital in Kancheepuram District, Tamil Nadu, India

2020 ◽  
Vol 5 (8) ◽  
pp. 237-242
Author(s):  
Dr. J. Samuel Cornelius Gnanadurai ◽  
◽  
Dr. S. Vimala Karunanidhi ◽  
Keyword(s):  
Visual Acuity ◽  
Cataract Surgery ◽  
Tamil Nadu ◽  
Controlled Trial ◽  
Age Group ◽  
Small Incision Cataract Surgery ◽  
Surgically Induced Astigmatism ◽  
Small Incision ◽  
Induced Astigmatism ◽  
Surgically Induced

Aim: To compare visual outcome, postoperative surgically induced astigmatism (SIA), andpostoperative complications of superior and temporal scleral incision in manual small incisioncataract surgery (MSICS). Materials and Methods: A Prospective Randomized, parallel-group,active-controlled Trial Study of 80 cases of senile/pre-senile cataract. 40 cases were randomlyassigned (computer-generated randomization) to superior incision and 40 cases to the temporalincision. Results: The majority of patients (38 patients- 47.5%) were in the age group of 56-65years. The next common age group was 66-75 years(31 patients-38.75%). In the superior MSICSgroup, the majority of patients (28 patients-70%) had a moderate post-operative unaided visualacuity of 6/18-6/12. In the temporal MSICS group, majority of patients(33patients-82.5%) had agood post-operative unaided visual acuity of 6/9-6/6. The mean surgically induced astigmatism(SIA)in the superior MSICS group was 1.12 and in the temporal MSICS group was 0.45 with a differenceof 0.67. The SIA values were analyzed using the unpaired T-test which showed a value of 9.967which was statistically significant(P value of 0.0001). Conclusion: This study has shown that thetemporal approach for Manual small incision cataract surgery(MSICS) has less postoperativeastigmatism and better postoperative unaided visual acuity compared to the superior approach.

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.

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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