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Intraoperative aberrometry may reduce residual refractive astigmatism after toric IOL placement
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Toric IOL implantation with intraoperative aberrometry was significantly more likely than standard techniques to yield less than 0.5 D of residual refractive astigmatism, according to a study.
The retrospective, nonrandomized comparative trial included 37 eyes that underwent cataract extraction and toric IOL implantation with intraoperative aberrometry and 27 eyes that underwent the same surgery without intraoperative aberrometry.
Mean follow-up was 58 days in the aberrometry group and 60 days in the non-aberrometry group.
Mean preoperative keratometric astigmatism was 1.83 D in the aberrometry group and 1.59 D in the non-aberrometry group.
Mean postoperative residual refractive astigmatism was 0.46 D in the aberrometry group and 0.68 D in the non-aberrometry group.
Cylinder was reduced between preoperative keratometric astigmatism and postoperative residual refractive astigmatism by 75% in the aberrometry group and 57% in the non-aberrometry group (P = .0027).
In the aberrometry group, residual refractive astigmatism was 0.25 D or less in 38% of patients, 0.5 D or less in 78%, 0.75 D or less in 86% and 1 D or less in 95%. In the non-aberrometry group, residual refractive astigmatism was 0.25 D or less in 22% of patients, 0.5 D or less in 33%, 0.75 D or less in 74% and 1 D or less in 89%.
“These data show that the chance of a patient being in a lower postoperative [residual refractive astigmatism] range increased when intraoperative aberrometry was used (P = .0130),” the study authors said. - by Matt Hasson
Disclosure: Talamo reports he is a paid consultant and member of the scientific advisory board for WaveTec Vision Systems. The remaining authors report no relevant financial disclosures.
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