Habitual higher order aberrations affect Landolt but not Vernier acuity

Jenny L. Reiniger; Anne C. Lobecke; Ramkumar Sabesan; Michael Bach; Frenne Verbakel; John de Brabander; Frank G. Holz; Tos T.J.M. Berendschot; Wolf M. Harmening

doi:10.1167/19.5.11

Habitual higher order aberrations affect Landolt but not Vernier acuity

Jenny L. Reiniger, Anne C. Lobecke, Ramkumar Sabesan, Michael Bach, Frenne Verbakel, John de Brabander, Frank G. Holz, Tos T.J.M. Berendschot, Wolf M. Harmening

Medical Image Analysis

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

To assess whether the eye's optical imperfections are relevant for hyperacute vision, we measured ocular wave aberrations, visual hyperacuity, and acuity thresholds in 31 eyes of young adults. Although there was a significant positive correlation between the subjects' performance in Vernier- and Landolt-optotype acuity tasks, we found clear differences in how far both acuity measures correlate with the eyes' optics. Landolt acuity thresholds were significantly better in eyes with low higher order aberrations and high visual Strehl ratios (r² = 0.22, p = 0.009), and significantly positively correlated with axial length (r² = 0.15, p = 0.03). A retinal image quality metric, calculated as twodimensional correlation between perfect and actual retinal image, was also correlated with Landolt acuity thresholds (r² = 0.27, p = 0.003). No such correlations were found with Vernier acuity performance (r², 0.03, p > 0.3). Based on these results, hyperacuity thresholds are, contrary to resolution acuity, not affected by higher order aberrations of the eye.

Original language	English
Article number	11
Pages (from-to)	1-15
Number of pages	15
Journal	Journal of Vision
Volume	19
Issue number	5
DOIs	https://doi.org/10.1167/19.5.11
Publication status	Published - 1 May 2019

Funding

Supported by the National Institutes of Health (P30-EY001730), unrestricted grant from Research to Prevent Blindness (RS), and Emmy Noether Program of the German Research Foundation (DFG) Ha5323-5/1 (WMH). RS holds a career award at the Scientific Interfaces from the Burroughs Wellcome Fund and a career development award from the Research to Prevent Blindness.

Keywords

Aberrometry
Image blur
Landolt acuity
Psychophysics
Retinal sampling
Spatial vision
Vernier acuity

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abstract = "To assess whether the eye's optical imperfections are relevant for hyperacute vision, we measured ocular wave aberrations, visual hyperacuity, and acuity thresholds in 31 eyes of young adults. Although there was a significant positive correlation between the subjects' performance in Vernier- and Landolt-optotype acuity tasks, we found clear differences in how far both acuity measures correlate with the eyes' optics. Landolt acuity thresholds were significantly better in eyes with low higher order aberrations and high visual Strehl ratios (r2 = 0.22, p = 0.009), and significantly positively correlated with axial length (r2 = 0.15, p = 0.03). A retinal image quality metric, calculated as twodimensional correlation between perfect and actual retinal image, was also correlated with Landolt acuity thresholds (r2 = 0.27, p = 0.003). No such correlations were found with Vernier acuity performance (r2, 0.03, p > 0.3). Based on these results, hyperacuity thresholds are, contrary to resolution acuity, not affected by higher order aberrations of the eye.",

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AU - de Brabander, John

AU - Holz, Frank G.

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Habitual higher order aberrations affect Landolt but not Vernier acuity

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