Original articleFive-Year Outcome of LASIK for Myopia
Section snippets
Patients
The study protocol was conducted in accordance with the tenets of the Declaration of Helsinki. Written informed consent was obtained from all patients.
Seven hundred seventy-nine eyes of 402 patients (221 male, 181 female; mean age, 34.6±8.3 years; mean subjective refraction, −6.40±2.58 diopters [D]; range of subjective refraction, −0.75 to −14.50 D) who underwent LASIK between December 1997 and March 2002 at Minamiaoyama Eye Clinic and regularly returned for postoperative examination were
Diameter of the Ablation Zones
The spherical equivalent (SE) of the target for the correction of refractive error was −6.30±2.59 D (range, −0.5 to −14.0). In 765 eyes (98.2%), the laser ablation was planned to target full correction. Mean diameters of the ablated area were 6.06±0.22 mm (range, 5.00–6.50) in the optical area and 6.97±0.17 mm (range, 5.70–7.50) when the transitional area was included.
Visual Acuity
The UCVA (logarithm of the minimum angle of resolution [logMAR]) of the patients was 1.27 (range, 0.2–2.0) preoperatively and
Discussion
Post-LASIK refractive results continued to be stable for a long time after the initial surgery, although minimal regression was observed by 1 year after surgery. The maintenance of postoperative refractive error within ±1.0 D in about 90% and within ±2.0 D in 97.9% of all operated eyes indicated that the predictability and stability of the surgery were good. A decreased BCVA of >2 lines was observed in 10 eyes (1.3%); however, in 7 of these, there were obvious causes other than LASIK (e.g.,
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Cited by (0)
Manuscript no. 2007-417.
Drs Kato and Toda contributed equally to the work.