Overnight vision correction, also known as orthokeratology, ortho-k or corneal reshaping, is a procedure where you are fitted with specially designed rigid gas-permeable (RGP) lenses that you wear overnight. These lenses help to alter the shape of your cornea while you sleep in order to temporarily reduce or correct mild…
If you need glasses, the optometrist will write you a prescription. Here is a simple guide to it means: Sph (sphere) represents how long or short sighted you are. This can be positive (+) for long sight or negative (-) for short sight. The higher the number, the stronger your…
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