Abstract
Purpose: :
To examine the post-operative results of LASEK procedures using the CustomVis PULZARTM Z1 solid state laser in patients with high astigmatism.
Methods: :
LASEK was performed on 72 eyes of 47 patients (23 female; average age of 40.8 ± 12.3 years, range 20 to 69 years) with astigmatism of at least -1.50D. LASEK was performed in all cases. Mitomycin C was used in 17 eyes and the procedure was wavefront guided in 11 eyes. Uncorrected and best corrected visual acuity, subjective refraction, phacimetry and pupil size were measured pre-operatively, and 2 and 6 months post-operatively.
Results: :
The mean pre-operative astigmatism was -2.5 ± 0.9DC (maximum -5.50 DC), reducing to -0.8 ± 0.3DC at 2 months and -0.4 ± 0.4DC at 6 months post-operatively. Vector analysis showed an improvement in mean spherical equivalent (-2.80 ± 3.00D; -0.17 ± 0.75D; -0.14 ± 0.76D), J0 (0.54 ± 1.08D; 0.04 ± 0.25D; 0.00 ± 0.23D) and J45 (0.10 ± 0.58D; 0.01 ± 0.16D; 0.00 ±0.17D) refractive components from pre-operative status to 2 and 6 months post operatively respectively (p<0.001). Uncorrected visual acuity improved from 0.93 ± 0.37logMAR to 0.06 ±0.12logMAR at 2 months and 0.04 ± 0.07logMAR at 6 months post-operatively.
Conclusions: :
The PULZAR Z1 is a safe, reliable and effective tool for laser refractive surgery in patients with high astigmatism.
Keywords: laser • astigmatism • visual acuity