Contact Lenses: Selecting RGP Material Properties - Takeaways - MDSpire

Contact Lenses: Selecting RGP Material Properties

In this month’s column — part two in a two-part series — I present specific cases that highlight the considerations of these material properties.

  • By

  • Susan A. Resnick, OD, FAAO

  • March 2, 2025

  • 4 min

Share

  • 1

    Material properties of RGP lenses, such as oxygen permeability and surface chemistry, significantly influence lens selection.

  • 2

    A 75-year-old female patient experienced visual disturbances due to low-Dk material lenses, which were replaced with higher-Dk lenses.

  • 3

    The higher-Dk material resolved the patient's symptoms and eliminated corneal edema after two weeks of wear.

  • 4

    A 53-year-old patient faced lens fogging, attributed to poor wetting, which improved after switching to lower-Dk lenses with a tear-mimicking coating.

  • 5

    Careful selection of contact lens materials can enhance vision, comfort, and ocular health for RGP lens wearers.

Original Source(s)

Contact Lenses: Selecting RGP Material Properties

  • by Susan A. Resnick, OD, FAAO

  • March 2, 2025

Related Content

Orthokeratology Today: Topography Tells the Tale

Topography is key in optimizing orthokeratology lens fits for effective myopia control, according to Dr. Cheryl Chapman.

Deep Learning Meets AS-OCT

Exploring advanced deep learning models shows significant promise in enhancing scleral lens fitting through precise segmentation of AS-OCT images.

Fitting Retinal Disease Patients

Before initiating any contact lens fitting, confirm retinal stability because many retinal diseases—including diabetic macular edema, retinal vein occlusion, and postoperative scarring following retinal detachment—can fluctuate over time.