Refractive Error (Blurred Vision): symptoms, causes & treatment in Nigeria
Also known as short-sightedness, long-sightedness, astigmatism.
This page is general health information, not a diagnosis. Always consult a licensed clinician about your own health.
Overview
Refractive errors — short-sightedness, long-sightedness, astigmatism and age-related reading difficulty — happen when the eye cannot focus light sharply, making vision blurry at distance, near or both. They are the most common cause of poor vision worldwide and are fully corrected with properly prescribed glasses or contact lenses.
Symptoms
Blurred vision at distance or up close
Squinting to see clearly
Headaches after reading or screen work
Eye strain or tired eyes
Children sitting too close to the board or TV
Holding print at arm's length after age 40
Causes & risk factors
Eye shape focusing light in front of or behind the retina
Family history
Natural ageing of the lens (reading difficulty after 40)
Excessive near work may worsen short-sight in children
Treatment & self-care
An eye test by a qualified optometrist measures the error precisely, and prescribed glasses or contact lenses restore clear vision — roadside or borrowed glasses commonly cause strain and headaches. Children should be tested early, since uncorrected blur affects learning. Adults benefit from a routine eye check every one to two years.
See a doctor urgently if
A child squinting, sitting close to the board or underperforming at school
Sudden blurring rather than gradual change
Blur with pain, redness or halos
Double vision
Frequently asked questions
What are the first signs of Refractive Error (Blurred Vision)?
Early signs often include blurred vision at distance or up close, squinting to see clearly, headaches after reading or screen work. Symptoms vary from person to person, so a proper assessment by a doctor is the only way to be sure.
Can Refractive Error (Blurred Vision) be treated?
An eye test by a qualified optometrist measures the error precisely, and prescribed glasses or contact lenses restore clear vision — roadside or borrowed glasses commonly cause strain and headaches. Children should be tested early, since uncorrected blur affects learning. Adults benefit from a routine eye check every one to two years.
When should I see a doctor about Refractive Error (Blurred Vision)?
See a doctor promptly if you notice: a child squinting, sitting close to the board or underperforming at school; sudden blurring rather than gradual change; blur with pain, redness or halos; double vision.