This type of contact lens has three advantages over soft contact lenses. Also, gas permeable lenses are easier to get used to than regular hard contacts. Regular hard contacts are made of rigid plastic that floats on the tear layer of the eye. Oxygen does not pass through the lens itself but is supplied by blinking, which produces tear circulation. Regular hard contacts are the most durable of all contact lenses.
Contact lenses are easy to care for and pose few related health risks to the wearer.
However, not everyone can wear contact lenses. Such factors as irregular cornea shapes, the tearing of the eye, working in a dusty or dirty environment, or suffering from severe allergies or eye infections, may make it difficult for a person to wear contact lenses safely and comfortably. For more information, please listen to the recording on contact lens care in the eye care section of your AudioHealth Library Directory. If you are considering wearing contact lenses, keep these factors in mind and be sure to discuss them with the ophthalmologist or optometrist at the time of your examination. Contact Lens Care Brochure, Glenn W. Owens and Jeffrey J Schultz.