Related Experiment Video
Updated: Jun 8, 2026
05:46
Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile
Published on: September 20, 2024
Wavefront-guided photorefractive keratectomy with the VISX platform for myopia
Simon R Bababeygy1, Edward E Manche
1Department of Ophthalmology, Stanford University School of Medicine, Stanford, CA, USA.
Journal of Refractive Surgery (Thorofare, N.J. : 1995)
|September 30, 2010
Summary
Wavefront-guided photorefractive keratectomy (PRK) is safe and effective for correcting myopia and myopic astigmatism. This laser eye surgery achieves high accuracy, with most patients seeing significant visual improvement within a year.
Area of Science:
- Ophthalmology
- Refractive Surgery
- Corneal Surgery
Background:
- Myopia and compound myopic astigmatism are common refractive errors.
- Photorefractive keratectomy (PRK) is a laser eye surgery procedure.
- Wavefront-guided PRK utilizes aberrometry to customize treatment.
Purpose of the Study:
- To assess the safety and efficacy of wavefront-guided PRK.
- To evaluate clinical outcomes for low to high myopia and compound myopic astigmatism.
- To determine the long-term results of this refractive surgery technique.
Main Methods:
- Retrospective analysis of 174 eyes from 102 patients.
- Treatment with wavefront-guided PRK using VISX CustomVue S4 IR excimer laser.
- Preoperative and 1, 3, 6, 12-month postoperative evaluations.
Main Results:
- At 12 months, 96.6% of eyes were within ±1.00 D of intended correction.
- 81.5% of eyes achieved correction within ±0.50 D.
- Safety and efficacy indices were 1.01 and 1.02, respectively.
Conclusions:
- Wavefront-guided PRK is a safe and effective treatment option.
- The procedure successfully corrects low to high myopia and compound myopic astigmatism.
- High predictability and visual outcomes were observed post-surgery.
Related Concept Videos
01:28Angle Closure Glaucoma: Treatment
Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
01:27Open Angle Glaucoma: Treatment
In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
Drugs such as carbonic anhydrase inhibitors, α2- and...