Laser Subepithelial Keratomileusis for
the Correction of High Myopia With the
Schwind ESIRIS Scanning Spot Laser
David P.S. O’Brart, MD, FRCS, FRCOphth; Mervat Al-Attar, DRCOphth, DO;
Badril Hussein, MRCOphth; Romesh Angunawela, MRCOphth; John Marshall, PhD
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Date:
22/03/2007
PURPOSE:
To investigate the efficacy of laser subepithelial keratomileusis (LASEK) for the correction of high
myopia with the Schwind ESIRIS scanning spot laser (Schwind eye-tech-solutions Gmbh & Co, Kleinostheim,
Germany).
METHODS: Fifty-one patients (76 eyes) were treated with a mean preoperative spherical equivalent
refraction of -7.55 diopters (D) (range: -6.0 to -10.75 D).
All eyes received a LASEK technique using 15% alcohol with a 20-second
application.
RESULTS: An intact epithelial flap was obtained in 73 (96%) eyes. At 1 week, uncorrected visual acuity
(UCVA) was >=20/30 in 53 (70%) eyes and >=20/60 in
all eyes. At 6 months (n=76), the mean SE was +0.08 D (range: -1.00 to +1.875 D) with 73 (96%) eyes
within ±1.0 D of the intended correction and 60 (79%)
eyes within ±0.5 D. At 12 months (n=46), the mean SE was -0.07 D (range: -1.375 to
+2.0 D) with 44 (96%) eyes within ±1.0 D of the intended correction
and 37 (80%) eyes within ±0.5 D. Myopic cylindrical corrections were attempted in 68 eyes
(range: -0.25 to -4.25 D) with vector analysis demonstrating a mean
85% correction. At last follow-up, UCVA was >=20/20 in 47 (62%) eyes, >=20/25 in 63 (83%) eyes, and
>=20/40 in 75 (99%) eyes. Three (4%) eyes gained two lines of Snellen decimal equivalent best spectacle-corrected
visual acuity compared to preoperative levels, 68 (89%) eyes showed no change or gained one line, and 5 (7%)
eyes lost one line. None lost more than one line. Only 2 (3%) eyes at 6 to 12 months had more than
+1 axial corneal haze and 50 (66%) showed no evidence of haze on slit-lamp examination.
CONCLUSIONS: Laser subepithelial keratomileusis for myopia up to -11.00 D with the Schwind ESIRIS
laser provides good refractive and visual outcomes, with acceptable visual recovery and minimal complications.
[J Refract Surg. 2006;22:253-262.]
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