Coherence function analysis of the higher-order aberrations of the human eye

2006 ◽  
Vol 31 (2) ◽  
pp. 184 ◽  
Author(s):  
Karen M. Hampson ◽  
Edward A. Mallen ◽  
Christopher Dainty
Keyword(s):  
Function Analysis ◽  
Coherence Function ◽  
Higher Order ◽  
Higher Order Aberrations ◽  
Human Eye

Rotating pairs of Zernike phase plates for compensating for the higher-order aberrations of the human eye

2008 ◽  
Vol 55 (4-5) ◽  
pp. 727-735 ◽  
Author(s):  
Hongwei Zhang ◽  
Mikael Agopov ◽  
Olivier La Schiazza ◽  
Josef Bille
Keyword(s):  
Higher Order ◽  
Higher Order Aberrations ◽  
Human Eye ◽  
Phase Plates

scholarly journals Higher order aberrations of the eye: Part two

2016 ◽  
Vol 75 (1) ◽  
Author(s):  
Marsha Oberholzer ◽  
Wayne D.H. Gillan ◽  
Alan Rubin
Keyword(s):  
Pupil Diameter ◽  
Tear Film ◽  
Crystalline Lens ◽  
Higher Order ◽  
Refractive Errors ◽  
Measuring Apparatus ◽  
Higher Order Aberrations ◽  
Wavefront Aberrations ◽  
Human Eye

This article is the second in a series of two articles, which provides a discussion of the factors that may possibly contribute to variable results when wavefront aberrations of the human eye are measured. Some of the factors discussed in this article are the influences that refractive errors (specifically myopia and astigmatism), pupil diameter, accommodation of the crystalline lens, age, mydiatric drops and the integrity of the tear film may have on these wavefront measurements. The first article in the series explained the general principles of higher order aberrations (HOAs), as well as HOAs of importance in the eye and the measuring apparatus used to measure HOAs of the eye.Keywords: wavefront aberrations; aberrometry

Ocular higher-order aberrations in patients with various refractive errors

2017 ◽  
Vol 21 (3) ◽  
pp. 177-183
Author(s):  
Eman Morad ◽  
Mohamed Abd_ Elateef ◽  
Mohammad Mousa ◽  
Ismael Abdelatif
Keyword(s):  
Higher Order ◽  
Refractive Errors ◽  
Higher Order Aberrations

scholarly journals Matched comparison of corneal higher order aberrations induced by SMILE to femtosecond assisted LASIK and to PRK in correcting moderate and high myopia: 3.00mm vs. 6.00mm

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Mohammad Miraftab ◽  
Hassan Hashemi ◽  
Mohammadreza Aghamirsalim ◽  
Shiva Fayyaz ◽  
Soheila Asgari
Keyword(s):  
Visual Acuity ◽  
High Myopia ◽  
Spherical Aberration ◽  
Corneal Thickness ◽  
Higher Order ◽  
Laser In Situ Keratomileusis ◽  
Higher Order Aberrations ◽  
Surgical Methods ◽  
Matched Comparison ◽  
Surgical Group

Abstract Background The refractive surgeries induce corneal higher order aberrations (C-HOAs). In this study, change of C-HOAs after small-incision lenticule extraction (SMILE) compared to femtosecond assisted laser in situ keratomileusis (femto-LASIK), and to photorefractive keratectomy with mitomycin-C (PRK) under photopic and mesopic conditions. Methods In this prospective study, age, gender, and apical corneal thickness (ACT) matched cases with moderate myopia [spherical equivalent (SE) 3.00 to 6.00D) to high myopia (SE > 6.00D)] were enrolled. In addition to visual acuity and refraction, total C-HOA, coma, spherical aberration (SA), and trefoil in the 3- and 6-mm zones were measured before and 3 and 6 months after surgery. Results Overall, 372 moderate myopia cases (124 eyes of 124 individuals in each surgical group) and 171 high myopia cases (57 eyes of 57 individuals in each surgical group) were enrolled. At baseline, the differences in age, gender, ACT, uncorrected and corrected visual acuity, and SE were not statistically significant between subgroups of surgical methods within each myopia group (all P > 0.05). At 12 months, in the moderate myopia group, there was less increase in 6-mm zone total C-HOA, coma, and SA with SMILE compared to the other groups (all P < 0.05). In the high myopia group, there was greater increase in photopic total C-HOA and trefoil and less increase in mesopic SA with SMILE (all P < 0.05). Conclusions In correction of moderate myopia, SMILE has better results in mesopic condition. In high myopia correction, femto-LASIK and PRK have better results in photopic and SMILE in mesopic condition.

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