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Keratomileusis in situ for high myopia
1Jules Stein Eye Institute, UCLA School of Medicine, USA.
Journal of Cataract and Refractive Surgery
|December 1, 1996
Summary
Automated lamellar keratoplasty effectively corrects high myopia, though some patients experience a slight decrease in best spectacle-corrected visual acuity post-surgery. Surgeon experience appears crucial for achieving accurate refractive outcomes.
Area of Science:
- Ophthalmology
- Refractive Surgery
- Corneal Surgery
Background:
- High myopia presents significant visual challenges.
- Surgical interventions aim to correct refractive errors.
- Automated lamellar keratoplasty is a refractive surgical technique.
Purpose of the Study:
- To evaluate the safety and efficacy of myopic keratomileusis in situ (automated lamellar keratoplasty) using an automated microkeratome.
- To assess refractive outcomes and visual acuity following the procedure.
Main Methods:
- Retrospective analysis of 135 eyes from 91 patients who underwent myopic keratomileusis in situ.
- Preoperative myopia averaged 8.30 +/- 2.50 diopters.
- Follow-up ranged from 1 to 6 months, with data analyzed at 3 months and 6 months.
Main Results:
- At 3 months, 32/83 eyes were within 1.00 D of attempted correction, with a mean undercorrection of 0.90 D.
- Uncorrected visual acuity improved to 20/40 or better in 42/83 eyes at 3 months.
- Best spectacle-corrected visual acuity (BSCVA) declined by two lines in 8/83 eyes at 3 months; variability in outcome improved with surgeon experience.
Conclusions:
- Myopic keratomileusis in situ is a relatively effective and safe procedure for high myopia.
- A mild loss of BSCVA is a potential early postoperative complication.
- Surgeon experience is a key factor in achieving refractive accuracy.