Validation of a combined corneal topographer and aberrometer based on Shack-Hartmann wave-front sensing
Journal of the Optical Society of America A: Optics and Image Science, and Vision, ISSN: 1084-7529, Vol: 21, Issue: 5, Page: 683-696
2004
- 13Citations
- 29Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations13
- Citation Indexes13
- 13
- CrossRef6
- Captures29
- Readers29
- 29
Article Description
A corneal aberrometer based on Shack-Hartmann wave-front sensing was developed and validated by using calibrated aspheric surfaces. The aberrometer was found to accurately measure corneal reflective aberrations, from which corneal topography and corneal refractive aberrations were derived. Measurements of reflective aberrations correlated well with theory (R2 = 0.964 to 0.994). The sag error root mean square (RMS) was small, ranging from 0.1 to 0.17 μm for four of the five calibrated surfaces with the fifth at 0.36 μm as a result of residual defocus. Measured refractive aberrations matched with theory and whole-eye aberrometry to within a small fraction of a wavelength. Measurements on three human corneas revealed very large refractive astigmatism (0.65-1.2 μm) and appreciable levels of trefoil (0.08-0.47 μm), coma (0.14-0.19 μm), and spherical aberration (0.18-0.25 μm). The mean values of these aberrations were significantly larger than the RMS in repeated measurements. © 2004 Optical Society of America.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=2342646791&origin=inward; http://dx.doi.org/10.1364/josaa.21.000683; http://www.ncbi.nlm.nih.gov/pubmed/15139420; https://www.osapublishing.org/abstract.cfm?URI=josaa-21-5-683; https://www.osapublishing.org/viewmedia.cfm?URI=josaa-21-5-683&seq=0; https://opg.optica.org/abstract.cfm?URI=josaa-21-5-683; https://dx.doi.org/10.1364/josaa.21.000683; https://opg.optica.org/josaa/abstract.cfm?uri=josaa-21-5-683
The Optical Society
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