Contact Lenses Enhancing Vision with a Gas Permeable Lens

The gas permeable lens with neoteric technology wins easily over both the hard contact lens of yesteryear and the popular soft lens.

This gas permeable contact lens is made from stiff yet permeable materials that allow oxygen to reach the eye, offering crisper vision, greater durability and resistance to deposit accumulation as compared to a soft contact lens.

This state-of-the-art “hard” lens also known as RGP or Rigid Gas Permeable should not be confused with traditional hard contact lenses.

The old-style hard contact lens, made of a material called PMMA, was uncomfortable to wear, and did not allow the eyes to “breathe”.

The disadvantage of the gas perm lens is that it requires not only an adaptation period, but also needs to be worn on a daily basis to achieve maximum user comfort.

Some people complain of "spectacle blur" with these contact lenses, referring to temporarily blurred vision when removing the lens or on replacing the lens with glasses.

This necessitates the gas perm lens to be worn at all times, which can be an inconvenient proposition.

On the other hand, because an RGP is made of a stiff material, the lens retains its shape well when you blink, and provides clearer vision than a soft lens would.

The gas perm lens is durable and does not tear easily like soft contact lenses.

Protein and lipids from tears do not bind to a gas perm lens as readily as they do to soft contact lenses.

With a little care, these contact lenses from popular brands like Freshlook and Acuview last for years.

The gas perm lens is frequently the answer for people who do not obtain acceptable vision with soft contact lenses.

In conditions like astigmatism, keratinous and even nearsightedness in children, the gas perm lens has provided a valuable optical solution.

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