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2. Corneal cross-linking - Wikipedia

   en.wikipedia.org/wiki/Corneal_cross-linking

   Contact lens-assisted cross-linking (CACXL) may be performed for people with corneal stromal thickness between 350 μm to 400 μm after epithelial removal. in this method a pre-corneal riboflavin film, a riboflavin-soaked UV barrier-free soft contact lens of negligible power and a pre-contact lens riboflavin film are used to decrease UV ...

3. Polyhydroxyethylmethacrylate - Wikipedia

   en.wikipedia.org/wiki/Polyhydroxyethylmethacrylate

   Poly(2-hydroxyethyl methacrylate) (pHEMA) is a polymer that forms a hydrogel in water. Poly (hydroxyethyl methacrylate) (PHEMA) hydrogel for intraocular lens (IOL) materials was synthesized by solution polymerization using 2-hydroxyethyl methacrylate as raw material, ammonium persulfate and sodium pyrosulfite (APS/SMBS) as catalyst, and triethyleneglycol dimethacrylate (TEGDMA) as cross ...

4. Orthokeratology - Wikipedia

   en.wikipedia.org/wiki/Orthokeratology

   Orthokeratology lens. Orthokeratology, also referred to as Night lenses, Ortho-K, OK, Overnight Vision Correction, Corneal Refractive Therapy (CRT), Accelerated Orthokeretology, Cornea Corrective Contacts, Eccentricity Zero Molding, and Gentle Vision Shaping System (GVSS), is the use of gas-permeable contact lenses that temporarily reshape the cornea to reduce refractive errors such as myopia ...

5. Eye Vision Correction: Permanent Contact Lens Is Lasik ... - AOL

   www.aol.com/eye-vision-correction-permanent...

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6. Refractive error - Wikipedia

   en.wikipedia.org/wiki/Refractive_error

   Usually resolved after the removal of the lenses. Discomfort upon lens removal may be seen. Neovascularization New blood vessels may form in the iris region and the limbus. This may impair vision. Infections Various viral, bacterial, and fungal infection may be seen in the eye post-contact-lens wear, if proper lens hygiene is not maintained.

7. Subjective refraction - Wikipedia

   en.wikipedia.org/wiki/Subjective_refraction

   Subjective Refraction is a technique to determine the combination of lenses that will provide the best corrected visual acuity (BCVA). [1] It is a clinical examination used by orthoptists, optometrists and ophthalmologists to determine a patient's need for refractive correction, in the form of glasses or contact lenses. The aim is to improve ...