Presbyopia

Key clinical points

• Presbyopia is distinct from hyperopia, though the two can coexist and compound near difficulty.
• Reading glasses, bifocals, progressives, and multifocal contact lenses are the mainstays of correction.
• Monovision and multifocal contact lens strategies suit motivated patients.
• Presbyopia-correcting IOLs at the time of cataract surgery reduce spectacle dependence.
• Topical pilocarpine-based drops offer a temporary pharmacologic option for near vision.

Mechanism

Accommodation allows the young eye to increase its focusing power for near tasks. With age, the crystalline lens loses elasticity and the accommodative response weakens, so the near point recedes beyond a comfortable working distance. This process is gradual and progresses into the 60s.

Because it is a normal aging change of the lens, presbyopia affects everyone, including people who were never nearsighted or farsighted.

Optical and pharmacologic correction

Single-vision reading glasses, bifocals, and progressive addition lenses remain the most common solutions. Multifocal and monovision contact lens fittings serve patients who prefer not to wear glasses. Selection depends on visual demands, occupation, and tolerance of the compromises inherent in each design.

Topical miotics such as low-dose pilocarpine transiently improve near vision by creating a pinhole effect and are an option for select patients who understand their temporary duration and potential side effects.

Surgical correction

For patients undergoing cataract or refractive lens surgery, presbyopia-correcting IOLs—multifocal, extended depth of focus, and accommodating designs—can reduce dependence on reading glasses. Corneal approaches, including certain laser and inlay strategies, have been used with variable adoption.

Thorough counseling about visual trade-offs, especially nighttime dysphotopsias with diffractive optics, is essential for satisfaction.