Delhi Journal of Ophthalmology

Linear versus Torsional Phacoemulsification: A Comparative Study

Rohan Mehra, Manisha Gupta, Tarannum Shakeel, Sushobhan Dasgupta
Shri Guru Ram Rai Institute of Medical & Health Sciences, Dehradun, Uttarakhand, India

Editor-in-Chief, Delhi Journal of Ophthalmology, Dr R.P.Centre, AIIMS.

Corresponding Author:

Manisha Gupta MBBS, MS
HOD, Department of Ophthalmology
SGRRIM & HSPatel Nagar,
Dehradun 248001, Uttarakhand, India
Email id:

Received: 01-DEC-2018 Accepted: 16-JAN-2019 Published Online: 08-MAY-2019

AbstractPurpose: The purpose of the study is to compare the efficacy between Linear and Torsional Phacoemulsification and the impact on the outcome of surgery based on corneal endothelial cell count, central corneal thickness, post operative inflammation and visual acuity.
Methods: Patients having senile cataract with grade NS2-NS3 according to Lens Opacities Classification System III were included. Exclusion criteria included any disease that could hamper vision other than cataract. 108 eyes of 108 patients were studied. Of these, 54 patients were operated by the Torsional technique and 54 patients by the linear technique. Pre operative and post operative Day 1, Day 7, Day 15, Day 28 readings were taken.
Results: The mean age of patients was 60.54 ± 7.06 (SD) years. On postoperative day 28, the endothelial cell loss was less in patients of torsional phacoemulsification technique (97.41 ± 28.61) as compared to linear technique (99.04 ± 26.09) (difference was not significant). Similarly, central corneal thickness in patients of torsional phacoemulsification technique (26.80 ± 11.07) on day 28 was statistically same as those who underwent linear technique (27.37 ± 6.76). 7.4% patients in the linear group and 7.4% patients in the torsional group had postoperative inflammation on day 1, which resolved on subsequent visits. BCVA on postoperative day 1 in patients of torsional group was 6/9 whereas linear group was 6/12.
Conclusion: The torsional technique gives faster visual recovery than the linear technique. Although there was no statistically significant difference in terms of visual acuity, endothelial cell loss, postoperative corneal edema and postoperative inflammation between the two techniques as compared preoperatively and on post operative day 28.

Keywords :Corneal Endothelium Loss, Phacoemulsification