Postblink changes in total and corneal ocular aberrations*1

Montés‐Micó, Robert

doi:10.1016/j.ophtha.2003.06.027

Cited by 123 publications

(127 citation statements)

References 37 publications

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“…Nemeth et al 4 measured the ocular surface topography with a videokeratoscope in the interval between 5 and 10 s after a complete blink and showed significant differences in ocular surface topography (in terms of surface regularity index) whereas the ocular surface refractive power remained unaltered. A significant increase in both total and ocular surface aberrations 10 and 20 s after blink has been reported for larger pupil sizes (43.5 mm) by Montes-Mico et al 5 and they suggested that these optical changes were caused by increasing irregularity in the tear film with time.…”

Section: Introductionmentioning

confidence: 79%

Dynamics of ocular surface topography

Zhu

Collins

Iskander

2006

Eye

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Purpose To investigate fluctuations in the ocular surface, we used high-speed videokeratoscopy (50 Hz) to measure the dynamics of the ocular surface topography. Methods Ocular surface height difference maps were computed to illustrate the changes in the tear film in the inter-blink interval. Topography data were used to derive the ocular surface wavefront aberrations up to the fourth radial order of the Zernike polynomial expansion. We examined the ocular surface dynamics and temporal changes in the ocular surface wavefront aberrations in the inter-blink interval. Results During the first 0.5 s following a blink, the ocular surface height at the upper edge of the topography map increased by about 2 lm. Temporal changes occurred for some ocular surface wavefront aberrations and appeared to be related to changes in the distribution of tear film. Conclusion In the clinical measurement of ocular surface topography using videokeratoscopy or optics of the eye using wavefront sensors, care should be taken to avoid the initial tear film build-up phase following a blink to achieve more consistent results.

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Section: Introductionmentioning

confidence: 79%

Dynamics of ocular surface topography

Zhu

Collins

Iskander

2006

Eye

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“…2), 이는 통계학 적으로 유의하였다(p<0.05). Benito의 연구 Benito [14] 와 Mont-Micet 등 [29] 의 보고와 일치하는 것으로 판단 할 수 있었다( Table 5). Table 2).…”

Section: 전체대상자들의 시간에 따른 객관적 산란지수의 변화를 알아보기 위해 매초 사이의 변화량을 측정하였는데 순목unclassified

Comparison Among the Four Examination Methods for Dry Eye (OQAS test, TBUT, Schirmer Test, McMonnies test)

Park¹,

Kim²

2015

Journal of Korean Ophthalmic Optics Society

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“…Dubra et al [11] have used lateral shearing interferometry to monitor the effect of the tear film on the optical quality showing small but non-negligible variation in the wavefront error with time, while Montés-Micó et al [12] use a commercial topographer to show a degradation of the optical quality after time intervals of 10s and 20s following a blink. Other work is also currently underway using a Shack-Hartmann sensor [13].…”

Section: Introductionmentioning

confidence: 99%

Study of the dynamic aberrations of the human tear film

Gruppetta¹,

Lacombe²,

Puget³

2005

Opt. Express

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This is the unspecified version of the paper.This version of the publication may differ from the final published version. Abstract: The dynamic aberrations introduced by the human tear film are studied by measuring the topography of the tear film surface on 14 subjects using a curvature sensing setup. The RMS wavefront error variation of the data obtained is presented showing the non-negligible contribution of the tear film to overall eye aberrations. The tear film wavefronts are decomposed in their constituent Zernike terms, showing stronger contributions from 4th order terms and terms with vertical symmetry, and the temporal behaviour of these aberrations is analysed. Permanent

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Postblink changes in total and corneal ocular aberrations*1

Cited by 123 publications

References 37 publications

Dynamics of ocular surface topography

Dynamics of ocular surface topography

Comparison Among the Four Examination Methods for Dry Eye (OQAS test, TBUT, Schirmer Test, McMonnies test)

Study of the dynamic aberrations of the human tear film

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