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Straylight before and after LASEK in myopia: changes in retinal straylight.
Jos J Rozema1, Tanja Coeckelbergh, Thomas J T P Van den Berg
1Department of Ophthalmology, Antwerp University Hospital, Faculty of Medicine, Antwerp University, Belgium. jos.rozema@uza.be
Investigative Ophthalmology & Visual Science
|December 17, 2009
Summary
Laser-assisted subepithelial keratectomy (LASEK) normalizes elevated retinal straylight after surgery. Preoperative soft contact lens wear increases straylight, but this effect is eliminated by LASEK.
Area of Science:
- Ophthalmology
- Corneal Surgery
- Visual Optics
Background:
- Retinal straylight affects visual quality.
- Laser-assisted subepithelial keratectomy (LASEK) is a refractive surgery procedure.
- Understanding straylight changes post-LASEK is crucial for visual outcomes.
Purpose of the Study:
- To quantify changes in retinal straylight following LASEK.
- To investigate the impact of preoperative contact lens wear on straylight.
- To assess the normalization of base- and age-corrected (BAC) straylight after LASEK.
Main Methods:
- Prospective study of 86 eyes undergoing LASEK.
- Categorization of patients based on preoperative contact lens wear (rigid, soft, spectacles).
- Measurement of retinal straylight using the compensation comparison method pre- and post-surgery.
Main Results:
- Preoperative elevated BAC straylight significantly decreased after LASEK (P << 0.01).
- Straylight reduction correlated with preoperative BAC straylight levels (r(2) = 0.332).
- Soft contact lens wear increased preoperative straylight, an effect eliminated post-LASEK.
Conclusions:
- LASEK effectively normalizes higher-than-normal preoperative BAC straylight.
- LASEK eliminates the additional straylight increase caused by soft contact lens wear.
- Refractive surgery outcomes can be influenced by prior contact lens use.
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