Corneal contact lenses
These are contact lenses with diameter of 8.5 to 9.5 mm. They are produced as hard contact lenses, either from PMMA, or a copolymer of methyl methacrylate, which is permeable to oxygen – these contact lenses are called „rigid gas-permeable“ (RGP) contact lenses. Unlike the scleral contact lenses, corneal contact lenses are better tolerated – their smaller surface area enables better exchange of tear film and also allows the uncovered part of the eye to breathe. Hard corneal contact lens with rounded edges and adequate movement of the eye does not cause conjunctival hyperemia, as they do not come in contact with the conjunctiva.
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Other terms starting at C
- Center thickness
- Chelation
- Choroid
- Ciliary body
- Coloboma of the iris
- Conjunction
- Conjunctiva
- Conjunctival hyperemia
- Contact lenses
- Contactology
- Continuous wear contact lenses (Extended wear)
- Contraindication
- Cornea
- Corneal contact lenses
- Corneal dystrophy
- Corneal edema
- Corneal endothelium
- Corneal erosion
- Corneal foreign body
- Corneal permeability
- Corneal ulcer
- Correction
- Cosmetic contact lenses
- Curvature of contact lenses