Correlation of visual outcome and patient satisfaction with preoperative keratometry after hyperopic laser in situ keratomileusis
Accepted 22 March 2008.
Purpose
To prospectively study the dependence of visual outcomes and patient satisfaction on corneal keratometry (K) in hyperopic laser in situ keratomileusis (LASIK).
Setting
John A. Moran Eye Center, Department of Ophthalmology and Visual Sciences, University of Utah, Salt Lake City, Utah, USA.
Methods
Twenty-six patients (49 eyes) who had hyperopic LASIK from January to October 2005 were prospectively studied. Twelve patients (24 eyes) with a preoperative K value less than 43.0 diopters (D) (Group 1) were compared with 14 patients (25 eyes) with a preoperative K value greater than 44.0 D (Group 2).
Results
The mean preoperative hyperopia was +3.44 D (range +1.57 to +5.25 D). Ten patients in Group 2 and 1 patient in Group 1 lost 2 or more lines of best spectacle-corrected visual acuity (BSCVA). There was a statistically significant difference in subjective patient satisfaction (scale 1 to 4; 4 = most satisfied) between Group 1 and Group 2 (mean 2.75 ± 0.61 and 1.52 ± 0.66, respectively) (P<.0001). Group 2 had a statistically significantly higher dryness score (scale 0 to 3; 3 = severe) (mean 1.84 ± 0.70 versus 0.17 ± 0.38) (P<.0001). There was no between-group difference in the degree of preoperative hyperopia or keratometric change.
Conclusions
An increased incidence of loss of BSCVA and decreased patient satisfaction was associated with a preoperative K value greater than 44.0 D in hyperopic LASIK, indicating caution is required when performing LASIK in eyes with moderate to high hyperopia and steep preoperative corneal keratometry.
From Tufts University School of Medicine (Williams), Boston, Massachusetts, and the John A. Moran Eye Center (Dave, Moshifar), Department of Ophthalmology and Visual Sciences, University of Utah, Salt Lake City, Utah, USA
Corresponding author: Majid Moshirfar, MD, John A. Moran Eye Center, 6360 South 3000 East, Suite 200, Salt Lake City, Utah 84121, USA.
No author has a financial or proprietary interest in any material or method mentioned.
Supported in part by an unrestricted educational grant to the Department of Ophthalmology, University of Utah, Salt Lake City, from Allergan, Irvine, California, USA.
ABSTRACT