Comparison of Myopic LASIK Centered on the Coaxially Sighted Corneal Light Reflex or Line of Sight
| Autor: | Hiroyuki Hiramatsu, Nobuo Ikeda, Masakazu Funakura, Harkaran S Bains, Shigeki Okamoto, Kaku Kimura |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Adult
Male medicine.medical_specialty Light genetic structures medicine.medical_treatment Keratomileusis Laser In Situ Visual Acuity Reflex Pupillary Refraction Ocular Pupil Cornea Ophthalmology Myopia Humans Medicine Corneal reflex Visual axis Dioptre Coma business.industry LASIK Centration eye diseases Aberrations of the eye Treatment Outcome Optometry Female Lasers Excimer Surgery sense organs medicine.symptom business |
| Zdroj: | Journal of Refractive Surgery. 25 |
| ISSN: | 1081-597X |
| DOI: | 10.3928/1081597x-20090915-09 |
| Popis: | Purpose: To compare refractive outcomes of myopic LASIK with centration on the coaxially sighted corneal light reflex (CSCLR) to centration on the center of the pupil (line of sight [LOS]). Methods: The NIDEK CXIII excimer laser was used to treat 268 eyes with centration on the CSCLR (CSCLR group) and 288 eyes with centration on the LOS (LOS group). For the CSCLR group, the laser ablation was delivered 80% closer to the visual axis. One-month postoperative outcomes were compared. Results: Preoperative manifest refraction spherical equivalent (MRSE) was −4.88±1.55 diopters (D) (range: −8.50 to −1.25 D) in the CSCLR group and −5.05±1.63 D (range: −9.75 to −1.50 D) in the LOS group. The postoperative MRSE was 0.17±0.39 D (range: −1.38 to −1.25 D) in the CSCLR group and 0.19±0.48 D (range: −1.63 to −1.88 D) in the LOS group. Safety (1.18) and efficacy (1.047) indices were statistically significantly higher in the CSCLR group compared to the LOS group (1.138 and 0.997, respectively) ( P 0.25-mm difference between the CSCLR and LOS, favoring the CSCLR group. A statistically significantly greater induction of higher order aberrations ( P =.04) and coma ( P =.01) was noted in the LOS group postoperatively. Conclusions: Myopic LASIK centered on the CSCLR was significantly safer and more effective than LASIK centered on the pupil (LOS), with significantly lower induction of coma and total higher order aberrations. [ J Refract Surg . 2009;25:S944–S950.] |
| Databáze: | OpenAIRE |
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