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Surgically-induced astigmatism in phacoemulsification: 2.2 mm versus conventional blade clear corneal incisions

Poster Details

First Author: H.Arzoallxhiu KOSOVO

Co Author(s):    N. Polloshka-Arzoallxhiu   I. Juriku   K. Spahiu   D. Rexhbeqaj   H. Gashi   S. Bajraktari     

Abstract Details


To compare clinical outcomes and patient satisfaction in coaxial small incision (2.2 mm) and coaxial standard diamond blade clear corneal cataract surgery.


American Vision Eye Center in Prizrenand Ophthalmology Department of Prizren Regional Hospital.


In a retrospective trial 59 eyes with cataract and mild to moderate corneal astigmatism (1.42 + 0.75 D on keratometry) undergoing phaco surgery were randomized to receive coaxial surgey with 2.2 mm (group 1) and 17 blade (group 2) 2.5 to 2.7 mm corneal incisions. Main outcome measures were postoperative BCVA, corneal and refractive astigmatism and surgically induced astigmatism (SIA) calculated using the Unpaired T-test analyses method. 56 eyes made it to the postoperative assesment at 4 and 3 at 6 months wher they all underwent refraction IOL keratometry and clinical exam.


At 4 weeks follow up, the mean SIA in group 1 was 0.37_�.71 D (standard deviation 0.71) and 0.12_�.33 D (standard deviation 0.31) in group 2. Statistical analyses of our results using unpaired T-test revealed that the difference between the two groups was not so significant. The average line gain of LogMAR visual acuity was 0.40 in group 1, and o.37 in group 2. Again the difference in the amount of BCVA gained between the two groups was not statistically significant (p<0.04).


It is obvious that there is a movement underway to choose the smallest incision and knife type in cataract surgery, with an intention to minimize the amount of surgically induced astigmatism.However in our study we found out that the difference in the value of SIA of surgically induced astigmatism in cases with 2.2 mm blade compare to classing blades was statistically insignificant

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