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Patient satisfaction using a multivariate statistical analysis after implantation of a hydrogel corneal inlay in presbyopic emmetropes

Poster Details

First Author: G.Parkhurst USA

Co Author(s):    A. Roy   A. Lang   G. Lau   E. Barragan   R. Steinert   D. Koch     

Abstract Details


To evaluate patient satisfaction using multivariate statistics after implanting the Raindrop�Â�® Near Vision Inlay in presbyopic emmetropes.


Parkhurst NuVision. San Antonio, Texas.


373 presbyopic emmetropes were implanted with the Raindrop Inlay, and results are reported on 340 that progressed to one-year postop. The inlay is implanted in the non-dominant eye under a femtosecond laser flap. The inlay is designed to change the curvature of the overlying cornea, with a subsequent increase in refractive power. The validated NEI-RQL-42 self-evaluation assessed ocular and visual symptoms, the ability to perform everyday tasks, and patient satisfaction. Multivariate statistical analysis was used to investigate the relationship between these objective and subjective outcomes.


At 12 months after implantation, patients experienced a significant increase in near task ability (p < 0.001), while distance tasks remained at preoperative levels (p > 0.20). Patient satisfaction is associated with improved UNVA (p < 0.001) and minimal levels of visual symptoms (p < 0.001). The small loss of UDVA in the inlay eye is not significantly related to satisfaction after surgery (p > 0.20).


This population of presbyopic emmetropes require substantial near visual acuity to be satisfied with their Raindrop vision correction, but equally as important, the induced visual symptoms should be minimized. Due to the untreated dominant eye still being emmetropic, a slight loss of distance visual acuity in the inlay eye is tolerated.

Financial Disclosure:

research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented

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