Orthokeratology (ortho-k) is the fitting of specially designed gas permeable contact lenses that you wear overnight. While you are asleep, the lenses gently reshape the front surface of your eye (cornea) so you can see clearly the following day after you remove the lenses when you wake up.
Conferring to world health organization (WHO) glaucoma is the 2nd major reason of blindness through the globe. The impairment of the optic nerve due to great intraocular pressure causes the glaucoma and if it is untreated than it will progresses to vision loss with the beginning of unobserved blind spots at the edges of visual field followed by tunnel vision and finally to blindness. The causes of glaucoma include optic nerve damage along with the several underlying causes which are unknown.