Laser in situ Keratomileusis for Hyperopia andHyperopic and Mixed Astigmatism
With LADARVision Using 7 to 10-mm Ablation Diameters
Francesco Carones, MD; Luca Vigo, MD; Elena Scandola, MD
Page 1 of 1
Date:
22/03/2007
PURPOSE:
To evaluate the results of laser in situ keratomileusis (LASIK) performed to correct
hyperopia, and hyperopic and mixed astigmatism using wider ablation diameters (optical zone diameter
and overall ablation diameter) than those commonly used with the same and other lasers.
METHODS: After flap creation using an Alcon SKBM microkeratome set for a 10-mm flap
diameter, 53 eyes (33 patients) with a mean spheroequivalent
attempted correction of +2.34 ± 2.09 D underwent LASIK (Alcon LADARVision 4000) using a
7-mm optical zone diameter and a 3-mm transition zone for an overall 10-mm total ablation
diameter. The nasal hinge was prevented from undesired ablation by the use of proprietary hinge protector
software. Eyes were followed for 6 months after surgery.
RESULTS: Six months after surgery, mean spheical equivalent refractive error was -0.22 ± 0.41 D.
There were 79.2% of eyes within ±0.50 D, and 98.1%
within ±1.00 D of intended correction. Uncorrected visual acuity of 20/20 or better was achieved by
28 eyes (53%) and 20/40 or better by 50 eyes (94.3%).
No meaningful visual complaints during nighttime hours, such as haloes or glare, were subjectively
reported by patients.
CONCLUSIONS: The use of larger ablation diameters in LASIK for hyperopia, and hyperopic and
mixed astigmatism produced accurate results, early refractive stability, and good visual performance.
Articles