Refractive Errors

In individuals with a refractive error, the optics of the eye (Cornea and Lens) cannot focus light from distant objects on the retina.

Common refractive errors include:

• Myopia: When the optics of the eye is too powerful for the length of the eyeball, one has Myopia or Near-sightedness.
• Hyperopia: When the optics of the eye is not powerful enough for the length of the eyeball, one has Hyperopia or Far-sightedness.
• Astigmatism: When the optics of the eye is too powerful or too weak across one meridian. A person with Astigmatism sees lines of a particular orientation less clearly.
• Presbyopia: When the flexibility of the Lens declines due to age, leading to difficulty in near vision.