|About Dr. Ming Wang|
|Harvard & MIT
(MD, magna cum laude);
PhD (laser physics)
- Harvard & MIT (MD, magna cum laude); PhD (laser physics)
- Over 55,000 LASIK and cataract procedures (including on over 4,000 doctors)
- The FIRST center in TN to offer laser cataract surgery
- Introduced bladeless all-laser LASIK to the state
- Implanted the state's first Forever Young lens
- The first surgeon in the US to perform a new Intacs surgery to treat keratoconus
- Helped patients from 40 states and 55 countries
- International referral center for cataract surgery and LASIK complications
- Read Dr. Wang's book: LASIK Vision Correction
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Efficacy of laser in situ keratomileusis in correcting anterior and non-anterior corneal astigmatism: Comparative study
Click to read the full paper (pdf version).
To compare the efficacy of conventional laser in situ keratomileusis (LASIK) in treating corneal astigmatism and in treating noncorneal ocular residual astigmatism.
Private practice, Nashville, Tennessee, USA.
Retrospective case series.
The records of dominant eyes of consecutive patients who had LASIK were retrospectively analyzed to compare the efficacy of LASIK in eyes with predominantly anterior corneal astigmatism with the efficacy in eyes with predominantly ocular residual astigmatism (ORA). The ORA was determined by vector analysis using refractive cylinder and topographic astigmatism. Preoperatively, the ratio of ORA to preoperative refractive cylinder (R) was used to divide the patients into 2 groups; that is, eyes with predominantly anterior corneal astigmatism (ORA/R ratio <1.0) and eyes with predominantly ORA (ORA/R ratio ≥1.0). Efficacy was determined by examining the magnitude of the remaining uncorrected astigmatism and comparing the index of success (proportion of preoperative refractive astigmatism that remained uncorrected by LASIK) between the 2 groups.
The study evaluated 61 eyes of 61 patients. Conventional LASIK was twice as efficacious in the low-ORA group as in the high-ORA group. The index of success was 0.24 and 0.50, respectively, and the difference between groups was statistically significant (P = .036).
The efficacy of astigmatic correction by LASIK was significantly higher in eyes in which the preoperative refractive astigmatism was located mainly on the anterior corneal surface than in eyes in which it was mainly located posterior to the anterior corneal surface.
No author has a financial or proprietary interest in any material or method mentioned.
From Wang Vision 3D Cataract and LASIK Center (Kugler, Wang), Nashville, Tennessee, and Eye Physicians of Central Jersey (Cohen), Old Bridge, New Jersey, USA; Gefinor Center (Haddad), Beirut, Lebanon
Corresponding author: Lance J. Kugler, MD, LaserVision Correction, 13923 Gold Circle #100, Omaha, Nebraska 68144, USA.
Jessica Chan and Lillian Tseng worked on this project with the authors.
© 2010 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved.
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