Key Insights on RGP Contact Lens Fitting

Aug 20, 2024

Lecture on RGP Contact Lens Fitting

Introduction

  • Speaker's Observation: Many colleagues avoid fitting RGP (Rigid Gas Permeable) contact lenses.
  • Common Challenge: Difficulty in assessing proper fit of RGP lenses.

Identifying a Steep Fitting Lens

  • Characteristics:
    • Fluorescein Pooling: Excessive pooling in the center of the lens.
    • Thin Peripheral Corneal Surface (PCS): Evident in some areas.
    • Mid Peripheral Bearing: Pressure points in the mid-periphery.
    • Dimple Veiling: Air bubbles under the center of the lens.

Patient Complaints

  • Hard to Remove: Suction forces due to mid peripheral bearing make lens removal difficult.

Observing Lens Wetting

  • Poor Wetting:
    • Numerous pockets of fluorescein on lens surface.
    • Solutions:
      • Add coatings to the lens surface.
      • Change lens material.

Central Surface Pattern (SPK)

  • Central SPK: Evidence of lifting at the lens edge causing air bubbles.
  • Patient Feedback:
    • Uncomfortable lenses.
    • Lens displacement with eye movement or blinking.

Examples of Lens Fit

  • Flat Fit:
    • Central bearing visible.
    • Fluorescein pooling in mid-periphery.

Ideal Lens Fit

  • Perfect Fluorescein Pattern:
    • Even distribution beneath the lens.
    • Visibility of iris and pupil details.
    • Patient experiences partial vision clarity.

Adjustments

  • Lens Diameter:
    • Increase diameter to improve centration.

Conclusion and Course Promotion

  • Call to Action:
    • Encouragement to subscribe to KK's new Clinic Power Up Course.
    • Course Details:
      • 37 hours of content across 100 videos.
      • Practical insights for optometrists.
    • Sign-up Information: Link available in the description.

Note

This lecture provides essential insights into the nuances of RGP contact lens fitting, common challenges, diagnostic signs, and practical adjustments for improving lens fit. The accompanying course offers extensive resources for further learning.