November 14, 2017
Refractive errors are the most common eye problems. Vision conditions like nearsightedness, farsightedness, astigmatism, and presbyopia occur when the irregular eye shape blocks light from focusing on the retina. If the eyeball length changes in the cornea shape, or if the lens is aging, refractive errors can result. Most people develop one or more of these eye problems.
What Is Refraction?
When light bends as it passes through objects, this is the process called refraction. Vision happens when rays of light are bent as they move through the cornea and the eye lens. The light that passes through gets focused on the retina where it is converted into messages that get transmitted through the optic nerve over to the brain. It is here that the messages are interrupted by the images we see.
Types of Refractive Errors
Who Is Most at Risk for Refractive Errors?
Adults over the age of 35 are most at risk for Presbyopia. All other refractive errors can affect both adults and children. If your parents have certain eye problems, you may be more likely to develop the same type of conditions.
Signs of Refractive Errors
The most common symptom of refractive error is blurry vision. Other signs of vision conditions include:
Your eye doctor can detect refractive errors during a comprehensive eye exam. Patients with a refractive effort may visit their vision care professional often to address issues with eye discomfort, headaches or blurry vision. But, some people don’t even know they can’t see as clearly as they should.
These kinds of eye problems can be treated with corrective lenses like prescription eyeglasses or contact lenses, or laser eye surgery.