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Surgeons used decentered IOLs to treat vertical strabismus
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Adjusting IOL haptics to cause the lens to rest in a decentered position can be an effective option for correcting vertical strabismus in adult cataract surgery patients, according to a small study.
Hisaharu Nishimoto, MD, and colleagues in Sagamihara, Japan, evaluated outcomes for 11 eyes of six cataract surgery patients implanted with decentered IOLs to treat vertical strabismus at a mean age of 66 years.
In all cases, surgeons performed small-incision cataract surgery, but decentered the continuous curvilinear capsulorrhexis and bent the IOL haptics so it would decenter in the desired direction. They also created several relaxing incisions in the anterior capsule to prevent capsular contraction from altering the lens position, according to the study.
Preoperatively, vertical strabismus averaged 7.3 prism diopters (PD), ranging from 4 PD to 12 PD. At 2 years follow-up, the angle of vertical deviation averaged 1.3 PD, ranging from 0 PD to 5 PD, decentration averaged 0.52 mm and tilt averaged 4.3°, the authors reported.
The study is published in the June issue of Journal of Cataract and Refractive Surgery.