Bifocal lenses are designed to correct vision for both near and far distances by incorporating two distinct optical powers within a single lens. They are commonly prescribed for individuals with presbyopia, allowing them to see clearly at varying distances without switching between different pairs of glasses.

Bifocal Lenses

Vision correction refers to a variety of methods used to adjust refractive errors in the eye, enabling clearer vision. These corrections can be achieved through glasses, contact lenses, or surgical procedures that alter the shape of the cornea or lens.

Vision Correction

Near and far distances

Optical powers

Single lens

Presbyopia is an age-related condition where the eye's lens loses flexibility, making it difficult to focus on close objects. It typically becomes noticeable in people over 40 and is a natural part of the aging process of the eye.

Concepts

Relevant Degrees

Your Lessons