Native astigmatism biases subjective best focus setting, published in the Journal of Vision

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The study, published in the current issue of Journal of Vision, explores the role of native astigmatism and ocular aberrations on best-focus setting and its shift upon induction of astigmatism in 42 subjects (emmetropes, myopes, hyperopes, with-the-rule and against-the-rule astigmats), using a custom adaptive optics system. Best focus shifted in opposite directions in WTR and ATR astigmats upon induction of astigmatism, symmetrically with respect to the best-focus shift in nonastigmatic myopes. The shifts are consistent with a bias towards vertical and horizontal retinal blur in WTR and ATR astigmats, respectively, indicating adaptation to native astigmatism. The study is part of a collaboration between VioBio Lab and Essilor International.

Full publication: Marcos, S., Velasco-Ocana, M., Dorronsoro, C., Sawides, L., Hernandez, M., & Marin, G. (2015). Impact of astigmatism and high-order aberrations on subjective best focus. Journal of Vision, 15(11):4, 1–12.

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Posted on August 10, 2015, in General. Bookmark the permalink. Leave a comment.

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