Bad vision refers to a condition in which a person experiences impaired or diminished eyesight, resulting in difficulties perceiving objects, shapes, or details accurately. It is characterized by a reduced clarity of vision, encompassing factors such as blurriness, cloudiness, or distortion in the visual field.
There are various causes for bad vision. One common cause is refractive errors, including myopia (nearsightedness), hyperopia (farsightedness), astigmatism, or presbyopia (age-related farsightedness). In these cases, the shape or structure of the eye prevents light from focusing properly on the retina, leading to blurred or distorted vision. Other potential causes may include cataracts (clouding of the lens), glaucoma (increased intraocular pressure damaging the optic nerve), macular degeneration (deterioration of the central portion of the retina), or diabetic retinopathy (damage to the blood vessels in the retina due to diabetes).
Symptoms of bad vision can vary depending on the underlying cause, but may include difficulty reading or seeing distant objects, eye strain, headaches, squinting, or eye fatigue. It can significantly impact daily activities, such as driving, reading, recognizing faces, or performing tasks that require fine visual discrimination.
Treatment for bad vision may involve prescription eyeglasses or contact lenses to correct refractive errors, surgical procedures like LASIK to reshape the cornea, or medications and therapies to manage underlying conditions. Regular eye examinations are crucial for detecting and addressing bad vision promptly, as early intervention can often prevent further deterioration and improve visual acuity.
