|
مقاله
|
Abstract
|
|
|
Title:
|
Assessment and comparison of corneal biomechanics by dynamic scheimpflug imaging between Femtosecond assisted thin flap LASIK and PRK in high myopia
|
Author(s):
|
Hassan Hahsemi, Reza Ghaffari, Soheila Asgari
|
Presentation Type:
|
Oral
|
Subject:
|
Cornea and Anterior Segment
|
Others:
|
|
Presenting Author:
|
|
Name:
|
Reza Gafari
|
Affiliation :(optional)
|
Noor Ophthalmology Research Center, Noor Eye Hospital, Tehran, Iran
|
E mail:
|
ghaffaryreza@yahoo.com
|
Phone:
|
|
Mobile:
|
09143411839
|
|
|
Purpose:
|
To comparison the change in corneal biomechanical data by dynamic scheimpflug imaging between Femtosecond assisted thin flap laser in situ keratomileusis (F-LASIK) and photorefractive keratectomy (PRK) in high myopic patients.
|
Methods:
|
A total of 60 patients (30 patients in each group) underwent Femtosecond assisted thin flap LASIK (110µm) and PRK+MMC were enrolled. The parameters of Corvis ST were measured before and 3 and 6 months after surgery.
|
Results:
|
There were no significant differences of MRSE and ablation depth between groups. In F-LASIK group, a greater increase in deformation amplitude and decrease in pachymetry, radius, and applanation time-1 were found. In PRK group, increase peak distance and decrease IOP were observed. The significant but weak correlation between a number of parameters (ablation depth, central corneal thickness, residual stromal bed, and percentage anterior tissue serve) and the changes in Corvis ST biomechanical data were observed.
|
Conclusion:
|
This study demonstrated a significant change in Corvis biomechanical data after refractive surgery in high myopic patients after both PRK and F-LASIK. The magnitude of change was greater in the LASIK group and a different pattern of response was noted with each type of surgery.
|
Attachment:
|
|
|