Abstract
Purpose :
To investigate the changes in higher-order aberrations (HOAs) after corneal lenticule removal with a new femtosecond laser for myopia corrections.
Methods :
This study included 24 eyes of 12 patients who underwent corneal lenticule removal with a femtosecond laser system. The mean preoperative manifest spherical equivalent was -3.49D±1.20D (Range from -2.00D to -5.75D). Preop and postop at 1-day, 1-week, 1-month, 3-month, and 9-month wavefront aberrations up to the 6th order were measured with a commercial wavefront aberrometer (iDesign Wavefront Studio system, Johnson & Johnson Vision, Inc). Vertical coma, horizontal coma, spherical aberration, and wavefront error of higher-order aberrations (HOAs RMS) were analyzed over a 6mm pupil. The postop HOAs were compared to the preop HOAs.
Results :
Compared to the preop HOAs, HOAs at postop 1-day were increased. There is no significant difference in the mean HOAs starting at postop 1-week for horizontal coma (p=0.346) and spherical aberration(p=0.095). On average, at postop 9-month the vertical coma was -0.054 ±0.186µm, horizontal coma was 0.016±0.124µm, the spherical aberration was 0.046±0.163µm, and HOAs RMS was 0.363±0.115µm. No significant difference in the mean HOAs at postop 9-month for horizontal coma (p=0.466) and spherical aberration (p=0.232).
Conclusions :
This femtosecond laser system induced minimum HOAs in the surgical eyes after corneal lenticule procedures for myopia corrections. It demonstrated fast corneal recovery with no significant changes in spherical aberration and horizontal coma starting at postop 1-week.
This abstract was presented at the 2023 ARVO Annual Meeting, held in New Orleans, LA, April 23-27, 2023.