Purchase this article with an account.
Lynnelle K. Smith, Jewel L. Sandy, Peter N. Lombard, Leila M. Khazaeni, Howard V. Gimbel, Scott K. McClatchey, Jennifer A. Dunbar; Model For Refractive Change After Pediatric Posterior Optic Capture Cataract Surgery. Invest. Ophthalmol. Vis. Sci. 2011;52(14):6559.
Download citation file:
© ARVO (1962-2015); The Authors (2016-present)
We observed Sommering ring growth causing anterior lens displacement over time in some children with in-the-bag intraocular lens (IOL) implants. Optic capture may protect against rapid myopic shift by holding the lens posterior to the bag. We present a retrospective pilot study of optic capture patients to examine this model.
We reviewed all eyes between 2001-2010 from our institution that received cataract surgery with optic capture of an Alcon MA60AC IOL. All post-operative refractions were recorded, the first within a month of surgery, the last at least 2 years after, or over 8 months after for children < 3 years old at surgery. All data is HIPAA and IRB compliant.
Thirteen eyes in 12 patients met the entry criteria of 23 optic capture patients reviewed. The mean follow-up duration was 2.5 years (range 0.8-4.5) and age at first surgery was 4.9 years (range 1.4-9.7). The mean final spherical equivalent was +1.04 D, compared to +1.38 D predicted by the RRG2 model.
The posterior displacement of the optic captured IOL due to Sommering ring shift is estimated as 0.5 mm. The optical effect would cause 1.5D hyperopic shift, possibly buffering some of the expected early myopia. Our pilot has too few patients to draw conclusions. A study of 80 eyes with optic capture and adequate follow-up duration would provide enough power to analyze the refractive differences between optic capture and traditional IOL placement. Optic capture may yield different refractive outcomes than traditional pediatric cataract surgery.
This PDF is available to Subscribers Only