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The thin-flap LASIK technique
1Dougherty Laser Vision and Jules Stein Eye Institute, David Geffen School of Medicine at UCLA, Los Angeles, Calif, USA. info@doughertylaservision.com
Purpose:
To determine if LASIK using a 130-microm microkeratome head (thin-flap LASIK) is as visually effective and safe as when using a 160-microm head.
Methods:
A study was performed comparing postoperative day 1 uncorrected visual acuity (UCVA) and flap complications in eyes undergoing myopic LASIK with a 130-microm head versus a 160-microm head using the BD K-3000 microkeratome (BD Ophthalmic Systems, Waltham, Mass).
Results:
The mean preoperative myopia in the 155 eyes of 80 patients in the 130-microm head group was -5.00+/-2.53 diopters (D) compared to -3.78+/-1.73 D in the 279 eyes of 148 patients in the 160-microm head group. The groups were otherwise similar in terms of age, preoperative cylinder, and best spectacle-corrected visual acuity. The geometric mean postoperative day 1 UCVA was 20/25 in the 130-microm head group compared to 20/26 in the 160-microm head group. The only flap complication in the series was a single partial flap in the 160-microm head group.
Conclusions:
LASIK with a 130-microm head (thin-flap LASIK) is as visually effective and safe as when using a 160-microm head with the BD K-3000 microkeratome.
Insights
Laser-Assisted In Situ Keratomileusis (LASIK) using a thinner 130-microm microkeratome head is as effective and safe as using a thicker 160-microm head. This thin-flap LASIK procedure demonstrates comparable visual outcomes and minimal complications.
Area of Science:
- Ophthalmology
- Refractive Surgery
Background:
- Laser-Assisted In Situ Keratomileusis (LASIK) is a common refractive surgery procedure.
- Microkeratome head thickness is a critical parameter influencing flap creation and surgical outcomes.
Purpose of the Study:
- To compare the visual effectiveness and safety of LASIK utilizing a 130-microm microkeratome head (thin-flap LASIK) versus a 160-microm head.
Main Methods:
- A comparative study evaluated postoperative day 1 uncorrected visual acuity (UCVA) and flap complications.
- Eyes undergoing myopic LASIK with either a 130-microm or 160-microm head using the BD K-3000 microkeratome were analyzed.
Main Results:
- The mean preoperative myopia was -5.00 D for the 130-microm group and -3.78 D for the 160-microm group.
- Postoperative day 1 UCVA was 20/25 for the 130-microm head group and 20/26 for the 160-microm head group.
- Only one partial flap complication occurred, in the 160-microm head group.
Conclusions:
- LASIK with a 130-microm head (thin-flap LASIK) is as visually effective as using a 160-microm head.
- Thin-flap LASIK with the BD K-3000 microkeratome demonstrates comparable safety to the standard 160-microm head.
