OBJECTIVE: To evaluate the clinical efficacy, safety and predictability of femtosecond lenticule extraction (FLEx) for myopia. METHODS: This is a prospective Clinical trial involved 10 cases (10 eyes). The patients aged from 18 years old to 53 years old, an average of (34 ± 11) years old. Femtosecond lenticule extraction (FLEx) was used to treat myopia from -4.88 DS to -9.25 DS, an average of (-6.94 ± 1.50) DS with cylinder from 0.50 DC to 3.0 µm DC an average of (1.28 ± 0.73)DC. Their corneal thickness were (527.10 ± 29.05) µm in an average. The patients were followed up for 6 to 10 months with visual acuity, manifest refraction, intraocular pressure, wavefront aberration, corneal topography and optical coherence tomography (OCT). SPSS software was used to analysis. RESULTS: FLEx procedure was done well in every patients without any scanning problem. No infection happened to in the trial. The patients' UCVA improved to 0.6 - 1.2 while BCVA improved 0.7 - 1.2 postoperatively. BCVA improved more than 2 lines in 2 eyes whereas 1 line in 2 eyes. No eye lost BCVA. The difference between pre-and postoperative refraction was within ± 0.75 DS, an average of SE (-0.25 ± 0.33) DS. No epicenter showed in topography. Spherical aberration increased slightly in 8 eyes but decreased in 2 eyes. OCT showed that stroma bed fit to each other very well. CONCLUSION: Femtosecond lenticule extraction appears to be efficiency, safety and predictable for myopia. Femtosecond lenticule extraction could have a good stroma fit. Its wavefront aberration changes need to further investigation.
OBJECTIVE: To evaluate the clinical efficacy, safety and predictability of femtosecond lenticule extraction (FLEx) for myopia. METHODS: This is a prospective Clinical trial involved 10 cases (10 eyes). The patients aged from 18 years old to 53 years old, an average of (34 ± 11) years old. Femtosecond lenticule extraction (FLEx) was used to treat myopia from -4.88 DS to -9.25 DS, an average of (-6.94 ± 1.50) DS with cylinder from 0.50 DC to 3.0 µm DC an average of (1.28 ± 0.73)DC. Their corneal thickness were (527.10 ± 29.05) µm in an average. The patients were followed up for 6 to 10 months with visual acuity, manifest refraction, intraocular pressure, wavefront aberration, corneal topography and optical coherence tomography (OCT). SPSS software was used to analysis. RESULTS: FLEx procedure was done well in every patients without any scanning problem. No infection happened to in the trial. The patients' UCVA improved to 0.6 - 1.2 while BCVA improved 0.7 - 1.2 postoperatively. BCVA improved more than 2 lines in 2 eyes whereas 1 line in 2 eyes. No eye lost BCVA. The difference between pre-and postoperative refraction was within ± 0.75 DS, an average of SE (-0.25 ± 0.33) DS. No epicenter showed in topography. Spherical aberration increased slightly in 8 eyes but decreased in 2 eyes. OCT showed that stroma bed fit to each other very well. CONCLUSION: Femtosecond lenticule extraction appears to be efficiency, safety and predictable for myopia. Femtosecond lenticule extraction could have a good stroma fit. Its wavefront aberration changes need to further investigation.