Orthokeratology lenses
Rigidity
provides controlled interaction with the cornea
Gas permeability
allows the cornea to receive the necessary amount of oxygen
Overnight
the lenses are worn during sleep to provide temporary vision correction throughout the day
Description
Orthokeratology lenses are rigid gas-permeable contact lenses that are worn during sleep at night and removed in the morning.
Ortho-k lenses gently alter the curvature of the cornea, improving vision and helping to control the progression of myopia. Overnight lenses rest on the tear film and exert gentle pressure on the corneal epithelium (through hydraulic forces and surface tension). Under hydraulic pressure, the thickness of the epithelial cells changes. This change in the corneal cells temporarily alters the optical power of the cornea and corrects refractive errors (myopia, astigmatism, and hyperopia).
Exporter Information
30
years of experience
18000
cataract surgeries annually
