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Eighty-micron flap femtosecond-assisted LASIK for the correction of myopia and myopic astigmatism

Arturo Chayet, Denisse Pinkus, Karla Butron, Nora Robledo, Miguel Rivas, Yunuen Bages-Rousselon.


To evaluate the safety and efficacy of 80-μm flap femtosecond-assisted laser in-situ keratomileusis (LASIK), and the early clinical and refractive outcomes in the correction of myopia and myopic astigmatism.


Private practice, outpatient.




Patients who underwent femto-LASIK between February and April 2018. Inclusion criteria were myopia from -1.00 to -8.00 diopters (D), and astigmatism up to -3.0 D. No previous surgeries. All patients were tested preoperatively and on day one and month three for: uncorrected distance visual acuity, manifest refraction, corrected distance visual acuity, intraocular pressure, slitlamp and dilated fundus examination, Schirmer I test with anesthesia, and OSDI questionnaire. The FEMTO LDV Z8 was used for flap construction, and the Wavelight Allegretto 400 excimer for refractive treatment. Flap thickness was measured at week 1 with anterior segment optical coherence tomography (AS-OCT).


82 eyes were included. LogMAR uncorrected distance visual acuity was 1.28±0.53 preoperatively, 0.02±0.05 day 1, and 0.14±0.127 month 3. There was no loss of corrected distance visual acuity lines. Mean flap thickness measured at 1 week with AS- OCT was 73µ ± 6.7µ.


The use of ultra-thin flaps, just below Bowman layer, with the Ziemer LDV Z8 femtosecond laser was possible, safe, reliable, and reproducible. 80-μm flaps allowed for excellent vision on 1 day post-LASIK and may be a good alternative to maintain an appropriate percentage of tissue altered, especially when attempting greater corrections or larger treatment zones.