nearvision

Nearvision is the eye’s ability to resolve details at close range. It depends on accommodation, in which the crystalline lens changes shape under the ciliary muscle to increase the eye’s focusing power. For near tasks the eyes also converge and the depth of field helps maintain clarity.

The near point is the closest distance at which a clear image can be formed, which varies with age and refractive status. The amplitude of accommodation—the dioptric range available for focusing—declines with age in most people.

Presbyopia is the age-related loss of near focusing ability, usually becoming noticeable in the 40s. Individuals with myopia may see near objects more clearly without correction, while hyperopes often require accommodation to view near targets.

Assessment typically includes near visual acuity testing and determination of the near point of accommodation, alongside patient-reported difficulties with reading or screen work.

Management can include reading glasses, bifocals, or progressive lenses; contact lenses with multifocal designs or monovision; and refractive surgery such as multifocal or accommodating intraocular lenses for suitable candidates. Lighting, working distance, and regular eye examinations support near vision.