Comparison of surgically induced astigmatism after coaxial phacoemulsification through 1.8 mm microincision and bimanual phacoemulsification through 1.7 mm microincision

Abstract

The amount of SIA induced by bimanual MICS and coaxial MICS phacoemulsification was very small. The bimanual MICS induced a slightly higher degree of SIA; however, according to all methods of SIA analysis, there was no significant difference in the mean SIA induced by both techniques.

Paired opposite Clear Corneal Incision: Time-Related Changes of its Effect and Factors on which those Changes Depend

“…Corneal incisions of 3.0 mm or more induce significant astigmatism (5,7,9,19). In the case of microincisional cataract surgeries with incisions smaller than 2.0 mm, one would think that no significant astigmatic effect is induced; however, it has been recently proved that such incisions induce 0.42-0.5 D astigmatism (20). Many publications confirm that superior incisions induce higher and indirect astigmatism, and that temporal incisions induce lower and direct astigmatism (7,(21)(22)(23).…”

The influence of corneal wound size on surgically induced corneal astigmatism after phacoemulsification

“…23 In our study, the final SIA of 0.58 D for the 2.5 mm SICS group showed a result similar to that for the 2.0 mm MICS in the study by Hayashi et al 23 Wilczynski et al also compared the SIA 1 month after coaxial phacoemulsification through a 1.8 mm microincision with that for bimanual phacoemulsification through a 1.7 mm microincision. 17 The results showed a mean SIA of 0.42 AE 0.29 D for the coaxial MICS group and 0.50 AE 0.24 D for the bimanual group; the difference was not statistically significant. These studies revealed that limiting the incision size to < 2.5 mm will have less SIA.…”

“…17 Modern small-incision clear corneal cataract surgery causes less SIA and less change to corneal shape than older methods. 14,18 The main objective of our study was to compare the SIA caused by two different small incision sizes e 2.5 and 3.5 mm e for each individual.…”

Aspheric microincision intraocular lens implantation with biaxial microincision cataract surgery: Efficacy and reliability

“…Studies of the biaxial MICS technique report SIA values of 0.36 D with 1.7 mm incisions, 12 0.15 D with 1.5 to 1.7 mm incisions, 22 and 0.23 D with 1.7 mm incisions. 23 These findings show that with even with small incisions, the SIA is almost zero when the proper technique and IOL are used.…”