[Laser in situ keratomileusis for correction of hyperopia and hyperopic astigmatism using a scanning spot excimer laser. Results of a prospective clinical study after 1 year].
OBJECTIVE
The purpose of this investigation was to evaluate the safety, efficacy, predictability, stability and complications of LASIK for the treatment of hyperopia and hyperopic astigmatism using a scanning spot excimer laser.


METHODS
A total of 64 consecutive LASIK operations (37 patients, mean age 41 years, range 22-68 years) have been evaluated. The Hansatome microkeratome producing a superior hinge (flap diameter 9.5 mm) and a scanning spot excimer laser with an optical zone of 6.0 mm were used. Examinations were performed preoperatively, after 1 day, 7 days, 1 month, 4 and 12 months.


RESULTS
One year after the primary procedure only 1 eye lost 2 or more lines of best-corrected visual acuity, 91% were within +/-1 line and 4 eyes gained 2 lines. Of these eyes 50 (86%) reached an uncorrected visual acuity of > or=0.5, 32 (55%) > or=0.8, 16 (28%) > or=1.0, 24 eyes (41%) needed a refractive correction of +/-0.5 D, 44 eyes (76%) of +/-1.0 D and 55 eyes (95%) of +/-2.0 D. The mean spherical equivalent after 1 year was +0.17+/-0.85 D.


CONCLUSIONS
LASIK is suitable for the correction of hyperopia (up to a maximum of +5 D) and for hyperopic astigmatism (up to a maximum of -5 D). However, results were better in lower hyperopia (up to +3 D) than in the moderate hyperopia. The refractive results showed overall a good stability during the 12-month study period, but higher regression occurred in a few cases.
Kohnen
T
T
Augenklinik der Johann Wolfgang Goethe-Universität Frankfurt/M. kohnen@em.uni-frankfurt.de
Mirshahi
A
A
Cichocki
M
M
Bühren
J
J
Steinkamp
G W K
GW
D000328:Adult; D000368:Aged; D001251:Astigmatism / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006956:Hyperopia / Q000601:surgery*; D020731:Keratomileusis, Laser In Situ / Q000295:instrumentation / Q000379:methods; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012449:Safety; D013997:Time Factors; D014792:Visual Acuity