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Laser assisted in situ keratomileusis for high myopia
Ophthalmic Surgery and Lasers
|May 1, 1996
Summary
Laser assisted in situ keratomileusis (LASIK) effectively corrects high myopia exceeding -10.00 diopters. This study shows significant visual acuity improvements in patients undergoing the LASIK procedure for severe myopia.
Area of Science:
- Ophthalmology
- Refractive Surgery
Background:
- High myopia presents significant challenges for vision correction.
- Laser assisted in situ keratomileusis (LASIK) is a surgical option for refractive errors.
Purpose of the Study:
- To evaluate the clinical outcomes of LASIK for myopia greater than -10.00 diopters.
- To assess the safety and efficacy of LASIK in a cohort of patients with severe myopia.
Main Methods:
- The study included 18 eyes with pre-operative spherical equivalents ranging from -10.50 to -21.50 D.
- Hinge corneal cap techniques and an automated microkeratome were used, with a flap thickness of 130 microns.
- Excimer laser ablation was performed using the OmniMed II system with a 4.2-5.0 mm ablation zone.
Main Results:
- Postoperatively, at 6 months, the mean spherical equivalent was +0.14 D.
- 93% of eyes achieved correction within 2.00 D, and 47% within 1.00 D of the target.
- All cases showed improved uncorrected visual acuity; one eye experienced vision loss due to macular hemorrhage.
Conclusions:
- LASIK demonstrates effectiveness in correcting high myopia.
- The procedure offers a viable solution for patients with severe refractive errors.