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RGP quality control: the results of a national survey
1University of Missouri-St. Louis, School of Optometry 63121, USA.
Journal of the American Optometric Association
|March 1, 1995
Summary
Variable quality in rigid gas permeable (RGP) contact lenses can impact patient comfort and fit. Enhanced practitioner inspection of RGP lenses is crucial for improving quality control and ensuring successful outcomes.
Area of Science:
- Ophthalmology
- Optometry
- Materials Science
Background:
- Rigid gas permeable (RGP) contact lenses offer significant benefits but can suffer from variable quality.
- This variability may lead to reduced initial patient comfort and fitting issues.
Purpose of the Study:
- To assess the current quality control practices among optometrists regarding RGP contact lenses.
- To identify key factors influencing the quality and performance of RGP lenses.
Main Methods:
- A survey was distributed to 200 randomly selected optometrists regarding RGP lens usage and quality control.
- 86 optometrists responded, providing data on lens verification, reuse, laboratory practices, and perceived quality parameters.
Main Results:
- Most respondents fit 10-25% of new patients with RGP lenses.
- Fewer than 60% of practitioners verify critical parameters like edge quality (56%) and center thickness (38%).
- Poor initial wettability affects 5-10% of new lenses, and 75% of practitioners would be concerned about using previously used or modified lenses.
Conclusions:
- Inconsistent quality control directly compromises RGP lens quality and performance.
- Implementing more rigorous lens inspection by practitioners can significantly improve RGP lens quality.
- Adherence to these recommendations has the potential to increase the successful use of RGP contact lenses.
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