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Shruti Kochar Maru, Rohit Shetty, K Bhujang Shetty, Abhijit Sinha Roy; SAVER Study- Simulation by Adaptive Optics for Vision Experiment and tReatment in presbyopia. Invest. Ophthalmol. Vis. Sci. 2017;58(8):1247.
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© ARVO (1962-2015); The Authors (2016-present)
To evaluate distance, intermediate and near vision in presbyopic patients with an adaptive optics (AO) simulator by modifying spherical aberration (SA).
Visual AO (VAO) aberrometer (VOptica Inc., Spain) was used to measure ocular wavefront aberrations in presbyopic patients (n=100). VAO also has in built liquid crystal sensor to modify the ocular aberrations virtually and perform function vision test on presbyopic eyes. By changing SA over the natural aberrations of the eye, the change in uncorrected distance, intermediate (80 cm) and near (40 cm) visual acuity (VA) was noted in decimals. Refractive error was also measured with VAO. Induced change in SA was converted to required hyperopic ablation for possible surgical modification.
In presbyopic eyes, induction of added negative SA resulted in improvement of near and intermediate VA but distance VA reduced simultaneously. Median VA improved by 0.1 decimal in intermediate and near vision while distance VA reduced -0.15 decimal (p<0.0002). Desired change in SA was selected by optimizing the improvement in near and intermediate vision while maintaining distance VA. Nearly half of the eyes required a hyperopic spherical correction of 1D or more to improve the near and intermediate vision. The remaining needed 1D or less. Overall, each eye was unique.
VAO provided patient-specific measurements of aberrations and its subsequent modification to improve near and intermediate VA. This methodology can help in customization of presbyopia treatment with laser ablation.
This is an abstract that was submitted for the 2017 ARVO Annual Meeting, held in Baltimore, MD, May 7-11, 2017.
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