näköhäiriö

Näköhäiriö, or visual impairment, refers to a condition where a person's ability to see is significantly reduced. This can be caused by various factors, including genetic disorders, diseases, injuries, or the natural aging process. Visual impairments can range from mild to severe, affecting one or both eyes.

Common types of näköhäiriö include:

- Myopia, or nearsightedness, where distant objects appear blurry.

- Hyperopia, or farsightedness, where close objects appear blurry.

- Astigmatism, where the cornea or lens is irregularly shaped, causing blurred vision.

- Presbyopia, a condition that affects older adults, making it difficult to focus on close objects.

- Color blindness, a genetic condition where a person has difficulty distinguishing certain colors.

Näköhäiriö can also result from diseases such as glaucoma, cataracts, and macular degeneration. Injuries to the eye, such as trauma or infections, can also lead to visual impairments.

Treatment for näköhäiriö depends on the underlying cause. For refractive errors like myopia and hyperopia, corrective lenses or surgery may be recommended. For diseases, medications or surgical interventions may be necessary. In some cases, assistive devices like magnifiers or screen readers can help individuals with visual impairments navigate their environment.

Early detection and treatment are crucial for managing näköhäiriö and maintaining quality of life. Regular eye check-ups are essential for monitoring vision health and addressing any issues promptly.