Changes in Spherical Aberration after Various Corneal Surface Ablation Techniques
نویسندگان
چکیده
منابع مشابه
Changes in Spherical Aberration after Various Corneal Surface Ablation Techniques
PURPOSE The corneal change induced by refractive procedures influence both the postoperative refractive status and the ocular spherical aberration (SA). We evaluated changes in corneal SA after three types of surface ablation: phototherapeutic keratectomy (PTK), myopic photorefractive keratectomy (PRK), and myopic wavefront-guided laser epithelial keratomileusis (LASEK). METHODS Twenty-six ey...
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PURPOSE To investigate corneal spherical aberration and corneal asphericity after small incision lenticule extraction (SMILE) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK). METHODS This study enrolled 70 patients having SMILE and 64 subjects receiving FS-LASIK. The preoperative spherical equivalent (SE) was -5.83 ± 1.23 diopters (D) and -6.20 ± 1.52 D, respectively. T...
متن کاملhigher-order aberration changes and visual outcomes after wavefront-guided surface ablation excimer surgery in hyperopia and hyperopic astigmatism
purpose: to investigate the effects of surface ablation excimer surgery on higher-order aberrations and to assess the safety and efficacy of wavefront-guided surface ablation excimer surgery in patients with hyperopia and hyperopic astigmatism. methods: in this analytical & descriptive study, wavefront-guided surface ablation excimer surgery was performed in 58 eyes of 31 patients with hyperopi...
متن کاملReducing changes in spherical aberration and corneal asphericity in moderate and high myopic LASIK
METHODS: A total of 194 eyes of myopic patients were divided into two groups: moderate myopia (M) (≥ 4 D and < 6 D) and high myopia (H) (> 6 D). One of two possible ablation profiles was used in each group: an optimized wavefront profile (WF) (M-WF: Spherical equivalent (SE) = −4.84 ± 0.56; H-WF: SE = −7.28 ± 0.86) and the F-CAT Q optimized type customized algorithm (FC) (M-FC: SE = −4.93 ± 0.6...
متن کاملChanges in spherical aberration after lens refilling with a silicone oil.
PURPOSE It may be possible to restore accommodation to presbyopic human eyes by refilling the lens capsular bag with a soft polymer. In the present study, optical changes were measured that occurred in a pig eye model after the refilling of the capsular bag. METHODS The optical power and spherical aberration in 10 isolated pig lenses were measured under different conditions. They were first d...
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ژورنال
عنوان ژورنال: Korean Journal of Ophthalmology
سال: 2013
ISSN: 1011-8942,2092-9382
DOI: 10.3341/kjo.2013.27.2.81