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    Visual acuity, other tasks appear unaffected by inlay decentration

    Study analyzed 115 patients; only effects are for decentration greater than 0.75 mm

    Decentration of a novel corneal inlay for the surgical correction of presbyopia (Raindrop Near Vision Inlay, ReVision Optics) by less than 0.75 mm from a light-constricted pupil did not affect visual acuity, tasks, or halos and glare, according to a study presented by Robert J. Cionni, MD.

    The study focused on the clinically acceptable range of inlay decentration with a light-constricted pupil, explained Dr. Cionni, MD, medical director, The Eye Institute of Utah, Salt Lake City.

    About the study

    All 115 patients in the study were emmetropic or low hyperopic presbyopes with the inlay implanted in the non-dominant eye. Preoperatively, patients had a mean uncorrected near visual acuity (UNVA) of 20/80 and a mean uncorrected distance acuity (UDVA) of 20/20. No patient had LASIK in the non-dominant eye.

    Ray-tracing aberrometry/topography (iTrace, Tracey Technologies) was used to take wavefront measurements as they related to the light-constricted pupil center and the coaxially sighted corneal light reflex.

    Dr. Cionni used a multivariate regression model to assess the influence of inlay position on visual outcomes preoperatively and at 3 months postoperatively.

    Visual acuity, task performance, reports of halos and glare, and patient satisfaction were analyzed, he explained.

    The study found that the mean monocular UNVA improved 4.9 lines in the inlay eye, with no change in binocular distance vision.

    Eighty-three percent of the implants were centered radially within 0.5 mm of the pupil center, according to Dr. Cionni.

    Decentration range

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