Astigmatism is a refractive error caused by an irregular curvature of the cornea or lens, resulting in blurred or distorted vision at all distances. It can occur on its own or in combination with myopia or hyperopia.
If left uncorrected, astigmatism can cause headaches, eye strain, and distort vision at all distances. It can be corrected with prescription glasses, specialized contact lenses, or refractive surgery.
Hyperopia, or farsightedness, is a common vision condition affecting approximately one-quarter of the population. It is the opposite of myopia—nearby objects appear blurry, while distance vision is generally clear.
People with hyperopia may experience occasional headaches and eye strain. They may also feel fatigued when performing tasks that require close-up focus. Hyperopia can be corrected with prescription glasses or contact lenses.
Myopia, or nearsightedness, affects about one-third of the population. People with myopia have difficulty seeing distant objects clearly, while near vision remains sharp.
Individuals with myopia frequently experience headaches and eye strain. They may also feel fatigued while driving or participating in sports. Myopia can be corrected with glasses, contact lenses, or refractive surgery.
Presbyopia is the gradual loss of near vision caused by a decrease in the eye’s lens elasticity. Most adults begin noticing difficulty with near vision in their early 40s. It is an inevitable condition that affects everyone with age, even those who have never had vision problems before.
Common signs of presbyopia include holding reading materials farther away, blurred vision at a normal reading distance, and eye strain or headaches during close-up tasks. Presbyopia can be corrected with reading glasses or multifocal contact lenses.