What’s the Refractive Error?
Almost everyone has a refractive error. A refractive error occurs when light can not be sharply focused on the retina.
Common types of refractive errors are:
- Nearsightedness – also known as myopia
- Farsightedness – also known as hyperopia
- Astigmatism – a common secondary aberration in the focusing system of the eye
The number of people globally with significant refractive errors has been estimated at one to two billion. Rates vary between regions of the world with about 25% of Europeans and 80% of Asians affected.
Type of Refractive Correction