lähikauge

Lähikauge, or "near-sightedness" in English, is a common vision condition where distant objects appear blurry, while close objects remain clear. It occurs when the eyeball is slightly longer than normal or when the cornea has too much curvature, causing light to focus in front of the retina instead of directly on it. This condition is also known as myopia.

Lähikaukon syyt (causes) can include genetic factors, excessive eye strain, and prolonged near work such as reading or using digital devices. Environmental influences, such as insufficient outdoor time during childhood, have also been linked to increased myopia prevalence. Symptoms typically develop during childhood or adolescence and may progress over time.

Diagnosis involves a comprehensive eye examination, including tests for visual acuity, refraction, and retinal health. Treatment options include corrective lenses, such as eyeglasses or contact lenses, which shift the focal point to the retina. In some cases, refractive surgeries like LASIK or PRK may be recommended for adults with stable vision, though these procedures carry risks and are not suitable for everyone.

Prevention strategies focus on reducing eye strain, maintaining proper lighting when reading or working, and encouraging regular breaks through the 20-20-20 rule (every 20 minutes, look at something 20 feet away for 20 seconds). Outdoor activities, particularly in bright light, may help slow myopia progression in children. Regular eye exams are essential for early detection and management of lähikaukon kehitys (progression). While lähikaukon hoito (treatment) can improve vision clarity, it does not reverse the underlying eye shape changes.