| People who have had their natural lens surgically removed from their eye. | | A cross-section of the eye in any direction. | | The ability of a person to wear rigid lenses in their eye. | | Oxygen can easily pass through this material. | | Old style Scleral lenses, made in PMMA, with small holes drilled through the material to allow a supply of fresh tears for the cornea. | | Severely short sighted. | - High Oxygen Permeable Fluorocarbon silicone acrylate copolymer
| This describes the chemical for the material used in rigid gas permeable contact lenses. | | An eye condition in which the cornea becomes thin and protrusive, causing distorted vision, which can only be optically corrected by the use of rigid contact lenses. | | The fluid which fills the space between the eye and any rigid contact lens when it is being worn. | - RGP (rigid gas permeable)
| The material from which some contact lenses is made (both corneal and Scleral). The lens is hard, but allows oxygen exchange, hence rigid and gas permeable. | | As in Scleral lens, a contact lens large enough to bear on the Sclera, fits underneath both the top and bottom lids of the eye. | | The white of the eye. |
|
