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Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile
Published on: September 20, 2024
Transepithelial photorefractive keratectomy mode using SCHWIND-ESIRIS excimer laser: initial clinical results
Dong-Mei Wang1, Yi Du, Guang-Sheng Chen
1Eye Laser Department,Liuzhou Eye Hospital, Liuzhou Red Cross Association Hospital, Liuzhou 545001, Guangxi Zhuang Autonomous Region, China.
International Journal of Ophthalmology
|July 10, 2012
Summary
Transepithelial photorefractive keratectomy (T-PRK) with the SCHWIND ESIRIS excimer laser shows good visual outcomes and low haze. This aspherical ablation profile offers advantages in epithelium removal and stromal ablation for myopia correction.
Area of Science:
- Ophthalmology
- Refractive Surgery
- Corneal Surgery
Background:
- Transepithelial photorefractive keratectomy (T-PRK) is a refractive surgery technique.
- Aspherical ablation profiles aim to improve visual quality post-surgery.
Purpose of the Study:
- To evaluate postoperative pain, uncorrected visual acuity (UCVA), and corneal haze after T-PRK using an aspherical ablation profile with the SCHWIND ESIRIS excimer laser.
Main Methods:
- A retrospective case series of 59 eyes (32 patients) with myopia, with or without astigmatism.
- Procedures involved T-PRK using Optimized Refractive Keratectomy (ORK)-CAM software and the SCHWIND ESIRIS excimer laser.
- Postoperative pain, haze, UCVA, and manifest refraction spherical equivalent (MRSE) were analyzed.
Main Results:
- Mean pain level was low (1.37±0.613).
- At 3 months, 67.8% of eyes achieved a UCVA of 1.0, and 100% achieved 0.5.
- Mean haze value was 0.27±0.25, with no patients experiencing grade 2 or higher haze.
Conclusions:
- The SCHWIND ESIRIS aspherical ablation profile for T-PRK yields favorable visual results.
- Advantages include accurate epithelium removal and stromal ablation.
- Further research is recommended to assess long-term outcomes.
