gaasläbivad

Gaasläbivad, also known as gas permeable lenses or hard contact lenses, are a type of rigid contact lens made from specialized plastic materials that allow oxygen to pass through to the cornea. This oxygen permeability is a key feature that distinguishes them from older, non-gas permeable hard lenses, which could cause discomfort and limit oxygen supply to the eye.

These lenses are typically used by individuals with certain vision conditions, such as irregular corneas (e.g., due to keratoconus), high astigmatism, or severe dry eye, where soft lenses may not provide adequate vision correction or comfort. The rigid nature of gaasläbivad allows them to create a smooth optical surface over an irregular cornea, correcting vision more effectively in these cases.

The fitting process for gaasläbivad is precise and requires a trained eye care professional. The lenses are custom-made to fit the curvature of the eye, ensuring proper oxygen flow and visual acuity. While they may take some time to adjust to, many wearers find them comfortable once accustomed, and they can offer excellent vision clarity and durability. Gaasläbivad are also known for their long lifespan compared to soft contact lenses.