國立虎尾科技大學 |

Ocular Aberrations Across the Visual Field During Accommodation.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Ocular Aberrations Across the Visual Field During Accommodation./
Author:	Liu, Tao.
Description:	1 online resource (273 pages)
Notes:	Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.
Contained By:	Dissertation Abstracts International78-09B(E).
Subject:	Optics. -
Online resource:	click for full text (PQDT)
ISBN:	9781369756517

Ocular Aberrations Across the Visual Field During Accommodation.
Liu, Tao.

Ocular Aberrations Across the Visual Field During Accommodation. - 1 online resource (273 pages)

Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.

Thesis (Ph.D.)--Indiana University, 2017.

Includes bibliographical references

Myopia is classically defined as a mismatch between the optical power of the relaxed eye and its dioptric length. This definition is entirely foveocentric without concern for the contributions of peripheral refractive errors to myopia development. Long periods of steady near-work was considered to cause myopia development due to inadequate accommodation. Consequently, not only the on-axis optical features but also off-axis ones should be probed to gain insight about myopia progression. Moreover, these features need to be understood not only for the relaxed eye, but also for the accommodating eye. To acquire complete data set, a custom-built Indiana Scanning Aberrometer for Wavefront (I SAW) was developed to measure wavefront aberration along 37 line-of-sights at 8 different accommodation states in the central 30 degree visual field.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369756517Subjects--Topical Terms:

595336
Optics.
Index Terms--Genre/Form:

554714
Electronic books.

Ocular Aberrations Across the Visual Field During Accommodation.
LDR:03282ntm a2200361Ki 4500 001 916773
005 20180928111500.5
006 m o u
007 cr mn||||a|a||
008 190606s2017 xx obm 000 0 eng d
020 $a 9781369756517
035 $a (MiAaPQ)AAI10270657
035 $a (MiAaPQ)indiana:14599
035 $a AAI10270657
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Liu, Tao. $3 888754
245 1 0 $a Ocular Aberrations Across the Visual Field During Accommodation.
264 0 $c 2017
300 $a 1 online resource (273 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.
500 $a Adviser: Larry Thibos.
502 $a Thesis (Ph.D.)--Indiana University, 2017.
504 $a Includes bibliographical references
520 $a Myopia is classically defined as a mismatch between the optical power of the relaxed eye and its dioptric length. This definition is entirely foveocentric without concern for the contributions of peripheral refractive errors to myopia development. Long periods of steady near-work was considered to cause myopia development due to inadequate accommodation. Consequently, not only the on-axis optical features but also off-axis ones should be probed to gain insight about myopia progression. Moreover, these features need to be understood not only for the relaxed eye, but also for the accommodating eye. To acquire complete data set, a custom-built Indiana Scanning Aberrometer for Wavefront (I SAW) was developed to measure wavefront aberration along 37 line-of-sights at 8 different accommodation states in the central 30 degree visual field.
520 $a We found that ocular refractive state changed uniformly over the central visual field as the eye accommodates up to 6D, and the accuracy of accommodation across the central visual field is similar to that measured in the fovea. No systematic difference between emmetropic and myopic eyes was evident. Then, a linear vector-summation rule for axial and oblique astigmatism was found to account for their interaction over the central visual field. Using this combination rule, our experimental evidence revealed no systematic effect of accommodation on axial or oblique astigmatism for two adult populations. The axial and oblique astigmatism of the whole eye is less than for the cornea alone, indicating a compensatory role for internal optics at all accommodative states. This compensation mechanism was further validated theoretically with schematic eye model. Lastly, we developed a hybrid method yielding customized eye models that accurately reproduce the empirical measurements and reasonably represent the anatomical structure, thus providing a mechanistic explanation for the changes in the eye's aberration structure that occur over the central visual field during accommodation.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Optics. $3 595336
650 4 $a Ophthalmology. $3 644487
650 4 $a Mental health. $3 564038
655 7 $a Electronic books. $2 local $3 554714
690 $a 0752
690 $a 0381
690 $a 0347
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Indiana University. $b Optometry. $3 1190601
773 0 $t Dissertation Abstracts International $g 78-09B(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10270657 $z click for full text (PQDT)