eye conditions, refractive error simulation, astigmatism correction

Astigmatism correction with Acrysof T2 Toric IOL

“Astigmatism Correction with Acrysof T2 Toric IOL”

at 18th European Society of Cataract & Refractive Surgeons (ESCRS) Winter Meeting in Ljubljana, Slovenia

by Dr Richard Smith (presenter), Dr Margaret Kearns (co-author)


This study indicated that accurate correction of astigmatism is possible down to +/- 0.5 Dioptre. This is an important element in achieving better vision from cataract surgery.


Purpose: Assess efficacy of correction of corneal astigmatism in range 0.6 to 0.9 Dioptre using Alcon Acrysof T2 IOL

Setting: FOCUS (Sydney Eye Specialist Centre), Australia. Private ophthalmology clinic and day surgery

Methods: 102 eyes Pre-op corneal astigmatism assessed with IOLmaster and Orbscan, 0.6 to 0.9 Dioptre cylinder corrected by implantation of T2 IOL. Refractive astigmatism assessed at 1 month or more post-op

Results: Of 102 eyes 98 had less cyl than pre-op 95 had 0.5 Dioptre or less 89 had 0.25 or less

Conclusions: It is worthwhile correcting low corneal astigmatism, 0.6 to 0.9 with the Acrysof T2 IOL. The few cases where refractive cylinder was increased or not reduced reflect limitations of our ability to measure whole eye astigmatism with current instruments.

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