Editing Presbyopia (section)

===Image processing in the brain===
A number of studies have claimed improvements in near visual acuity by the use of training protocols based on [[perceptual learning]] and requiring the detection of briefly presented low-contrast Gabor stimuli; study participants with presbyopia were enabled to read smaller font sizes and to increase their reading speed.<ref name="Lev, M. 2014">{{cite journal | vauthors = Lev M, Ludwig K, Gilaie-Dotan S, et al  | date = 28 November 2014 | title = Training improves visual processing speed and generalizes to untrained functions | journal = Scientific Reports | volume = 4 | issue = 1 | page = 7251 | doi = 10.1038/srep07251 | pmid = 25431233 | pmc = 4246693 | bibcode = 2014NatSR...4.7251L }}</ref><ref name="Polat, U. 2012">{{cite journal |vauthors = Polat U, Schor C, Tong J, Zomet A, Lev M, Yehezkel O, Sterkin A, Levi DM | date = 23 February 2012 | title = Training the brain to overcome the effect of aging on the human eye | journal = Scientific Reports  | volume = 2 | page = 278 | doi = 10.1038/srep00278 | pmid = 22363834 | pmc = 3284862 | bibcode = 2012NatSR...2..278P}}</ref><ref name="DeLoss, D. 2014">{{cite journal | vauthors = DeLoss DJ, Watanabe T, Andersen GJ | year = 2014 | title = Optimization of perceptual learning: Effects of task difficulty and external noise in older adults | journal = Vision Research | volume = 99 | pages = 37–45 | doi = 10.1016/j.visres.2013.11.003 | pmid = 24269381 | pmc = 4029927}}</ref><ref name="Sterkin, A. 2018">{{cite journal | vauthors = Sterkin A, Levy Y, Pokroy R, Lev M, Levian L, Doron R, Yehezkel O, Fried M, Frenkel-Nir Y, Gordon B, Polat U | year = 2018 | title = Vision improvement in pilots with presbyopia following perceptual learning | journal = Vision Research | volume = 152 | issue = 152 | pages = 61–73 | doi = 10.1016/j.visres.2017.09.003 | pmid = 29154795 | s2cid = 20260936 | doi-access = free }}</ref>