[Second operation after laser in situ keratomileusis].
OBJECTIVE
To compare clinical results between the laser in situ keratomileusis (LASIK) surgery and the laser subepithelial keratomileusis (LASEK) surgery as the second operation after an unsuccessful LASIK surgery.


METHODS
Thirty one patients (62 eyes) with refractive regression or under-correction after LASIK operation received the second surgery. Thirty eyes received LASIK surgery (group A) and 32 eyes received LASEK surgery (group B). The follow-up period was one year. The main parameters included visual acuity, refraction, corneal curvature, and the total value of high-aberration.


RESULTS
The difference in visual acuity in one week postoperation between both group was statistically significant (t = 5.21, P < 0.01), the acuity of LASEK group (0.57 ± 0.11) was obviously lower LASIK group (0.79 ± 0.21). There is no difference in acuity between both group in 1 month and 1 year postop. The difference in uncorrected visual acuity, average spherical equivalent refractive degree, average corneal curvature, and the total value of high-aberration between both group 1 year after operation was statistically not significant. Uncorrected visual acuity (A group 0.84 ± 0.15, B group 0.82 ± 0.11, t = 0.60), average spherical equivalent refractive degree (A group -0.34 ± 1.15, B group -0.32 ± 1.13, t = -0.07), average corneal curvature (A group 37.87 ± 1.95, B group 38.47 ± 2.15, t = -1.15), the total value of high-aberration (A group 0.45 ± 0.11, B group 0.48 ± 0.13, t = -0.98). One patient developed epithelium ingrowth after LASIK surgery. One patient suffered from 2+ haze after LASEK surgery.


CONCLUSIONS
Both LASIK and LASEK surgery can obtain satisfactory therapeutic results after an unsuccessful LASIK surgery.
Department of Ophthalmology, 306 th Hospital of PLA, Beijing 100101, China. liuyi_oph@126.com
Yi
Y
Liu
Hong-wei
HW
Zhao
Fei
F
Li
D000328:Adult; D005260:Female; D006801:Humans; D049008:Keratectomy, Subepithelial, Laser-Assisted; D020731:Keratomileusis, Laser In Situ; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D011184:Postoperative Period; D012086:Reoperation; D012189:Retrospective Studies; D055815:Young Adult