Optical Clarity

Decoding Your Contact Lens Specs

Understand oxygen transmissibility, water content, and base curve precision to find the safest, most comfortable lenses for your eyes.

Material Science

Silicone Hydrogel vs. Hydrogel

Silicone hydrogel lenses offer superior oxygen transmissibility (Dk/t), crucial for corneal health during extended wear. This advanced material reduces hypoxia risk, making them ideal for long hours or screen exposure.

Traditional hydrogel lenses, while comfortable, rely primarily on water content for oxygen flow. While suitable for some, their lower Dk/t can lead to dryness and fatigue, especially in dry environments.

Before You Buy

Verify Your Prescription Parameters

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Base Curve (BC)

Diameter (DIA)

Power (PWR/SPH)

Material Type

Ensure the BC matches your eye's curvature for a stable, comfortable fit and optimal vision.

The DIA must perfectly align with your cornea to prevent irritation and ensure full coverage.

Confirm the spherical power for accurate vision correction. Toric lenses also require Cylinder (CYL) and Axis (AX).

Check if your prescription specifies silicone hydrogel or hydrogel, impacting Dk/t and comfort.

Questions on Your Spec Sheet?

Our technical optical team can help clarify complex parameters and guide your lens selection.