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Vienna 2018 Delegate Registration Programme Exhibition Virtual Exhibition Satellites 2018 Survey


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Spherical aberration customisation with an adaptive optics visual simulator

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Session Details

Session Title: Vision & Accommodation Assessment

Session Date/Time: Monday 24/09/2018 | 14:00-16:00

Paper Time: 14:54

Venue: Room A3, Podium 2

First Author: : L.Hervella SPAIN

Co Author(s): :    E. Villegas   P. Artal   J. Marin              

Abstract Details


To validate in the clinic the use of the Adaptive Optics Visual Simulator VAO (Voptica SL, Murcia, Spain) for customization of spherical aberration (SA) to increase depth of focus (DOF).


Laboratory of Optics, University of Murcia, Spain.


VAO combines a Hartmann-Shack wave-front sensor to measure objective refraction and aberrations together with a spatial light modulator capable of correcting or inducing any optical profile while performing visual testing. Through focus visual acuity (VA) from +1.25 to -3.0 D in steps of 0.25D was measured in 8 dilated eyes with three different induced amounts of SA for a 4.5-mm pupil diameter: control (SA =0 µm), -0.15 and -0.30 µm. DOF was defined as the dioptric range from 0 to -3.00 D with VA better than 0.15 LogMAR. Ninety-five percent confidence interval (CI) was calculated as 1.96*SD.


Negative values of SA increased depth of focus. The mean values of LogMAR VA at far, intermediate (100 cm) and near (33 cm) were for three conditions: control (-0.13, -0.01 and 0.58), -0.15-µm SA (-0.01, -0.10 and 0.25) and -0.30-µm SA (0.17, -0.05 and 0.13). There was a high inter-subject variability in VA for all values of defocus, with 95%CI ranged from ±0.06 to ±0.43 LogMAR. The DOF for control, -0.15 and -0.30-µm SA were 1.91, 2.66, 2.97 D and the 95%CI were ±0.83, ±1.14 and ± 0.41 D respectively.


Increasing the depth of focus with spherical aberration using the VAO adaptive optics visual simulator showed a high variability between different subjects for every defocus and condition. VAO is a new instrument that offers significant advantages in visual customization of SA to enhance DOF.

Financial Disclosure:

... has significant investment interest in a company producing, developing or supplying product or procedure presented, ... is employed by a for-profit company with an interest in the subject of the presentation

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