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.

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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.

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