Toric ICL proves safe, effective, predictable in treating myopic astigmatism

Clin Experiment Ophthalmol. 2010;38(5):467-474.

Implantation of toric implantable collamer lenses proved safe and effective in treating myopic astigmatism, according to a study.

"This study is the largest reported series of toric ICL implantation," the study authors said. "It supports the safety, efficacy and predictability of toric ICLs to treat myopic astigmatism."

The retrospective case review included 77 eyes of 42 patients with high myopic astigmatism implanted with toric ICLs. Mean preoperative spherical equivalent refraction was -2.50 D to -15 D of myopia and 1 D to 7 D of astigmatism.

Indications for ICL implantation were high myopia contraindicated for LASIK (73%), thin cornea (44%) and contact lens intolerance (3%).

Results at 12-month follow-up showed that mean manifest cylinder diminished from 2.38 D to 0.44 D (81%). Seventy-six eyes (99%) had postoperative best corrected visual acuity equaling or exceeding preoperative levels; 60 eyes (78%) gained up to one line of BCVA and one eye (1%) lost one line.

Data showed that 38 of 42 patients (90%) had uncorrected binocular vision of 6/6 or better; 28 of 42 patients (67%) had uncorrected binocular vision of 6/6 or better preoperatively.

Two eyes with 3.25 D and 3.5 D of astigmatism underwent subsequent LASIK to minimize small residual refractive errors. One ICL had to be replaced because of low vaulting.

Side effects included night halos in eight eyes (10%) at 12 months postop. No cases of cataract formation or endophthalmitis were identified, the authors said.

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