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OBJECTIVE: To compare the change in pre existing corneal astigmatism after closing superonasal incisions by single 10/0 suture and by simple hydration at the time of cataract surgery
with phacoemulsification through clear corneal incision.
DESIGN: Prospective, comparative and interventional.
SETTING: Department of Ophthalmology, Liaquat University of Medical and Health Sciences
Jamshoro, during the period from Jan 2011 to Sept 2011.
METHODS: This prospective study included 244 left eyes. All eyes went phacoemulsification
through a clear corneal incision (3.0 mm) superonasally. First 122 eyes were closed with single
10/0 sutures and remaining 122 with simple hydration. Magnitude of astigmatism was measured
by keratometer at 1 week, 4 and 8 weeks postoperatively. Vector analysis method was used to
calculate the surgical induced astigmatism. SPSS version 11.0 was used to analyze the data. P
value 0.05 was considered significant.
RESULT: Out of 244 patients 59.42% were males and 40.57% were female. The mean pre operative astigmatism was >1.0 D. In early days there no significant change in post operative astigmatism (0.50 ± 0.45 D / 0.75 ± 0.50 D, p value < 0.001) was found, but statistically significant
change in magnitude of astigmatism (0.84 ± 0.69 D / 2.25 ± 0.70 D, p value 0.05) and Surgically
Induced Astigmatism (0.81 ± 0.62D / 1.12 ± 0.94D) was found in first and second group respectively at the end of follow-up.
CONCLUSION: Closing of clear corneal incision superonasally with our technique in the left
eyes is easy during phacoemulsification for right-handed surgeon without fear of increase in
pre existing astigmatism.
Mahtab Alam Khanzada, Arshad Ali Lodhi, Nisar Ahmad Siyal, Shahid Azeem Mirza. (2013) Change in Pre Existing Corneal Astigmatism after Phacoemulsification through Clear Corneal Incision, , Volume-12, Issue-3.
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