Summary of The Lost Art of RGP Fitting #RGPLenses #CornealLenses #RoseK2 | OOLS | Dr. Elizabeth Chetty
Dr. Elizabeth Chetty, an academic optometrist, delves into the world of RGP (Rigid Gas Permeable) contact lenses, highlighting their importance and versatility. She outlines a detailed six-step fitting procedure, stressing the significance of selecting the right lens design based on the corneal condition, determining the base curve, and evaluating the fluorine pattern. Dr. Chetty emphasizes the need for guidelines, experience, and creativity in fitting RGP lenses, particularly for conditions like keratoconus. She shares valuable clinical tips, such as adjusting power and using white light and fluorine for evaluation during the fitting process.
Key Points
- Rules and guidelines for fitting RGP lenses
- Adding plus power to compensate for a negative lens
- Adjusting the base curve when changing the back optic zone diameter
- Utilizing a cost rule for soft lenses like toric soft contact lenses
- Tips for assessing the Florine pattern, focusing on color and pooling
- Importance of using a barrier or rotten filter during assessment
- Criteria for patient selection, especially for conditions like PMD
- Preference for diagnostic fitting over empirical fitting
- Advocacy for starting with a diagnostic set for fitting RGP lenses
Conclusion
In conclusion, Dr. Elizabeth Chetty emphasizes the importance of a thorough fitting assessment, including a three-hour tolerance trial, to achieve the best possible fit for RGP lenses. Through her expertise and insights, she sheds light on the art of RGP fitting and the intricacies involved in achieving successful outcomes for patients.
Notable Quotes
— 02:09 — « on this talk about rigid gas permeable Coral contact lens »
— 03:27 — « this is actually quite useful in helping you decide what is too Steep and what is too flat when you first start off with fitting rgps »
— 03:53 — « so on alignment is zero »
— 04:14 — « doing your over refraction in a trial frame and looking at the movement and you know giving adaptation time and all of that what you need »
— 04:24 — « and then the other rule is that if you were to change the back optic Zone diameter you also need to just remember to adjust the base curve accordingly »
Category
Science and Nature