synfel

Synfel is the Swedish term for refractive error, a common vision problem caused by a mismatch between the eye's optical power and its length. When uncorrected, synfel can blur distance, near, or both, depending on the type of defect.

The main types are myopia (nearsightedness), hyperopia (farsightedness), astigmatism (irregular curvature of the cornea or lens), and presbyopia (age-related loss of near focus). Myopia and hyperopia describe general refractive tendencies, while astigmatism refers to an uneven eye optics that causes blurred or distorted vision at all distances. Presbyopia typically emerges with aging and affects near vision.

Causes include the eye’s axial length, corneal and lenticular curvature, and genetic factors. Environmental influences, such as sustained near work during childhood, may play a role in the progression of myopia in young people.

Diagnosis is performed by an optometrist or ophthalmologist through visual acuity testing and refraction, with additional measurements such as keratometry and biometry as needed. Regular eye examinations help detect changes over time.

Treatment options include corrective lenses (glasses or contact lenses) and refractive surgery (for eligible adults) to improve focus. Other methods, such as orthokeratology, can temporarily reshape the cornea. The choice depends on age, eye health, lifestyle, and personal preference.

Prognosis is generally good with proper correction, enabling normal daily functioning. Myopia may progress in childhood, necessitating periodic assessments. Synfel is a common focus of routine eye care and screening programs in many regions.