presbicia

Presbicia, also called presbyopia, is an age-related decrease in the eye’s ability to focus on close objects. It occurs as the crystalline lens becomes less flexible and the ciliary muscles that control lens shape weaken, reducing accommodation for near vision.

The condition typically begins in the early to mid-40s and progresses gradually over a decade or more. It is a normal part of aging and affects both eyes, though the degree of difficulty can vary between individuals.

Common symptoms include blurry near vision, the need to hold reading material farther away, eye strain or headaches after close work, and increased effort when reading or doing detailed tasks. Distance vision usually remains clearer.

Diagnosis is determined by an eye examination that includes refraction to determine near and far prescriptions and tests of accommodation. An optometrist or ophthalmologist will assess how well the eyes can focus at different distances.

Treatment options aim to restore comfortable near vision. Glasses are the most common correction and may be single-vision reading lenses, bifocals, or progressive lenses. Contact lenses designed for presbyopia (multifocal or monovision) are another option. Refractive surgery and implantable devices offer alternatives for selected patients and include presbyopia-correcting intraocular lenses, corneal inlays, or refractive lens exchange. Lifestyle adjustments, such as improved lighting and the use of magnifying aids, can also help. Many people combine several methods to optimize vision in different situations.

Presbyopia becomes noticeable in most adults by mid-life and tends to stabilize in later decades. It is highly prevalent and, with correction, near tasks can be performed comfortably.