farsightednessa

Farsightednessa, often treated as a variant spelling of farsightedness, refers to a refractive error in which distant objects are typically seen more clearly than close ones. The condition corresponds to hyperopia in medical terms. It results when the eye's optical power focuses light behind the retina rather than directly on it. Small degrees may be present at birth and persist or change with growth; in many young children the effect is mild and sight remains adequate at near tasks, though some may experience eye strain.

Causes include a shorter-than-normal eyeball, a cornea with too little curvature, or a lens with insufficient refractive power. Genetics plays a role, and hyperopia can occur alongside other eye conditions. Age-related changes later in life can affect accommodation, making near tasks more difficult.

Symptoms primarily involve blurred or strained near vision, headaches after reading, or squinting during close work. Infants and young children may not report symptoms, so screening is important.

Diagnosis relies on a comprehensive eye exam, including refraction tests and a slit-lamp or retinal examination. Cycloplegic refraction may be used in children to reveal true refractive error by temporarily relaxing focusing muscles.

Treatment aims to improve near vision and reduce strain. Corrective lenses—glasses or contact lenses—are the common first option. In adults with stable prescriptions, refractive surgery such as LASIK or PRK can be considered. Children with significant hyperopia may require glasses to prevent amblyopia and support development; in some cases observation is chosen if vision is adequate.