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• W1982977793 endingPage "1214" @default.
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• W1982977793 abstract "Purpose To obtain experimental values of the depth-of-field (DOFi) of the human eye for different accommodative states. Methods First, the monochromatic ocular wavefront of seven eyes from young subjects (mean [±SD] age, 29.7 [±7.7] years) was measured at eight different accommodative demands (ADs) (from −1 to 6 diopters [D] in steps of 1 D). Then, in a second part, accommodation was paralyzed and an adaptive optics system was used to correct the aberrations of the paralyzed eye and to simulate, with the aid of an artificial pupil, the wavefront of the accommodated eye. The simulation was performed for each AD measured in the first part of the experiment. A Badal system was used to modify the stimulus vergence so as to obtain three repeated measurements of the subjective DOFi, based on the criterion of an objectionable blur. Results When increasing AD from 0 to 6 D, the mean intersubject pupil diameter and DOFi changed from 5.70 to 4.62 mm and from 0.85 ± 0.26 D to 1.07 ± 0.19 D, respectively. All subjects presented a similar DOFi for all AD (intrasubject SD never exceeded 0.23 D). Paraxial accommodation response showed a lag that increased with the AD. For the lowest (0 D) and the highest (6 D) values of AD, the refractive state of the eye was close to the nearest and furthermost ends of the DOFi, respectively. Conclusions The visual system takes advantage of the DOFi to change the refractive state less than necessary to form the paraxial image at the retina when it comes to focusing a near target (5 to 6 D of AD). This indicates that the main purpose of accommodation is not to maximize retinal image quality but to form one that is good enough." @default.
• W1982977793 created "2016-06-24" @default.
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• W1982977793 date "2014-10-01" @default.
• W1982977793 modified "2023-09-28" @default.
• W1982977793 title "Depth-of-Field of the Accommodating Eye" @default.
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• W1982977793 doi "https://doi.org/10.1097/opx.0000000000000365" @default.
• W1982977793 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4461356" @default.
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• W1982977793 hasPublicationYear "2014" @default.
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