Nidhi Jauhari1, Deepak Chopra2, Rajan Kumar Chaurasia1, Ashutosh Agarwal1. 1. Department of Ophthalmology, Vivekananda Polyclinic and Institute of Medical Sciences, Vivekanandpuri, Lucknow, Uttar Pradesh 226001, India. 2. Department of Community Medicine, Integral University of Medical Sciences and Research, Kursi Road, Lucknow, Uttar Pradesh 226026, India.
Abstract
AIM: To determine the surgically induced astigmatism (SIA) in Straight, Frown and Inverted V shape (Chevron) incisions in manual small incision cataract surgery (SICS). METHODS: A prospective cross sectional study was done on a total of 75 patients aged 40y and above with senile cataract. The patients were randomly divided into three groups (25 each). Each group received a particular type of incision (Straight, Frown or Inverted V shape incisions). Manual SICS with intraocular lens (IOL) implantation was performed. The patients were compared 4wk post operatively for uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA) and SIA. All calculations were performed using the SIA calculator version 2.1, a free software program. The study was analyzed using SPSS version 15.0 statistical analysis software. RESULTS: The study found that 89.5% of patients in Straight incision group, 94.2% in Frown incision group and 95.7% in Inverted V group attained BCVA post-operatively in the range of 6/6 to 6/18. MeanSIA was minimum (-0.88±0.61D×90 degrees) with Inverted V incision which was statistically significant. CONCLUSION: Inverted V (Chevron) incision gives minimal SIA.
RCT Entities:
AIM: To determine the surgically induced astigmatism (SIA) in Straight, Frown and Inverted V shape (Chevron) incisions in manual small incision cataract surgery (SICS). METHODS: A prospective cross sectional study was done on a total of 75 patients aged 40y and above with senile cataract. The patients were randomly divided into three groups (25 each). Each group received a particular type of incision (Straight, Frown or Inverted V shape incisions). Manual SICS with intraocular lens (IOL) implantation was performed. The patients were compared 4wk post operatively for uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA) and SIA. All calculations were performed using the SIA calculator version 2.1, a free software program. The study was analyzed using SPSS version 15.0 statistical analysis software. RESULTS: The study found that 89.5% of patients in Straight incision group, 94.2% in Frown incision group and 95.7% in Inverted V group attained BCVA post-operatively in the range of 6/6 to 6/18. Mean SIA was minimum (-0.88±0.61D×90 degrees) with Inverted V incision which was statistically significant. CONCLUSION: Inverted V (Chevron) incision gives minimal SIA.
Entities:
Keywords:
incisions; manual small incision cataract surgery; surgically induced astigmatism
Authors: Edmund Arthur; Ahmed Abdul Sadik; David Ben Kumah; Eugene Appenteng Osae; Felix Agyemang Mireku; Frank Yeboah Asiedu; Reynolds Kwame Ablordeppey Journal: J Ophthalmol Date: 2016-12-28 Impact factor: 1.909