Surgically induced astigmatism

06.11.2026 4 min read

A sutured clear-corneal incision did not flatten the steep meridian after phacoemulsification

Cataract Vector analysis Clear corneal incision Surgically induced astigmatism Steep-axis incision Corneal suture

In a single-surgeon series of 345 eyes, sutured steep-axis incisions produced mainly torque and slight mean steepening rather than the expected flattening.

doi: 10.3341/kjo.2026.0126

28.10.2026 4 min read

Toric IOL marking: manual method versus femtosecond laser

Cataract IOL Toric IOL Femtosecond cataract surgery Toric IOL alignment Trifocal IOL PanOptix Manual axis marking Femtosecond capsular marking Surgically induced astigmatism

In a retrospective 70-eye comparison, residual astigmatism was 0.13 D lower with femtosecond capsular marking, but treatment groups were not randomized.

doi: 10.4103/IJO.IJO_3062_25

24.10.2026 4 min read

Toric IOL alignment on the steep meridian with SIA=0: a randomized trial

Cataract IOL Toric IOL Toric IOL alignment Surgically induced astigmatism

In 70 patients, aligning a Tecnis Toric IOL to the steep meridian with calculated SIA=0 reduced vector error, while the residual-cylinder difference did not reach significance.

doi: 10.2147/OPTH.S566499