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Complexity of contact lens fitting after refractive surgery
Karen K Yeung1, Michael D Olson, Barry A Weissman
1Jules Stein Eye Institute and Department of Ophthalmology, University of California, Los Angeles School of Medicine, 90095, USA. kyeung@saonet.ucla.edu
American Journal of Ophthalmology
|May 7, 2002
Summary
Fitting contact lenses on eyes after refractive surgery is more complex. These patients require more diagnostic lenses, ordered lenses, and office visits, leading to poorer vision and higher failure rates compared to controls.
Area of Science:
- Ophthalmology
- Corneal Surgery
- Contact Lens Technology
Background:
- Refractive surgery alters corneal shape, potentially complicating contact lens fitting.
- Understanding the challenges of contact lens correction post-refractive surgery is crucial for patient care.
Purpose of the Study:
- To quantify and describe the complexity of fitting contact lenses on corneas previously altered by refractive surgery.
- To compare the contact lens fitting process between postrefractive surgery patients and a control group.
Main Methods:
- A case-control study retrospectively analyzed 30 postrefractive surgery patients and 30 matched controls.
- Complexity was measured by diagnostic lenses, ordered lenses, and office visits within 4 months.
- Statistical analysis used the Mann-Whitney U test.
Main Results:
- Postrefractive surgery eyes required significantly more diagnostic lenses, ordered lenses, and office visits.
- Contact lens-corrected visual acuities were statistically worse in the postrefractive surgery group.
- Contact lens failures occurred in four postrefractive surgery eyes, versus none in controls.
Conclusions:
- Corneas altered by refractive surgery present greater challenges for contact lens fitting.
- Increased lens usage, chair time, and poorer outcomes are associated with postrefractive surgery contact lens wear.
- Both incisional and lamellar refractive surgery techniques result in similar contact lens fitting complexities.