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Excimer laser in situ keratomileusis

F B Kremer¹, M Dufek

¹Kremer Laser Eye Center, Radnor, Pa 19087, USA.

Journal of Refractive Surgery (Thorofare, N.J. : 1995)

|May 1, 1995

Summary

This study shows that using a 193-nm excimer laser for corneal stromal ablation with a hinged flap effectively reduces refractive error. The procedure resulted in minimal complications and improved visual acuity for most patients.

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Area of Science:

Ophthalmology
Laser Surgery
Refractive Error Correction

Background:

Refractive errors like myopia are common.
Surgical interventions aim to correct vision.
Excimer laser technology offers precise tissue ablation.

Purpose of the Study:

To evaluate the efficacy and safety of 193-nm excimer laser stromal ablation with a hinged corneal flap.
To assess refractive outcomes and visual acuity following the procedure.
To compare this method with excimer laser surface ablation.

Main Methods:

A retrospective review of 31 eyes undergoing corneal stromal ablation with a hinged flap using a 193-nm excimer laser.
Preoperative and 6-month postoperative refractive error (spherical equivalent and astigmatism) measurements were analyzed.
Visual acuity and complication rates were recorded.

Main Results:

Mean preoperative spherical equivalent refraction was -6.25 D, improving to -0.50 D at 6 months.
74.2% of eyes achieved correction within 1.00 D of the intended outcome.
81% of eyes had uncorrected visual acuity of 20/40 or better, with minimal complications.

Conclusions:

Excimer laser ablation of the corneal stromal bed combined with a hinged corneal flap is an effective method for refractive error correction.
This technique demonstrates a favorable safety profile with a low incidence of complications.
The procedure offers advantages over excimer laser surface ablation, potentially leading to better outcomes and fewer adverse events.

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