Which type of lenses are specifically designed for correcting presbyopia?

Bifocal lenses are specifically designed to address presbyopia, a common age-related condition where the eye gradually loses its ability to focus on close objects. These lenses feature two distinct optical powers: one for distance vision and another for near vision, typically blended into a single lens.

Individuals with presbyopia often experience difficulty reading or performing tasks that require clear vision up close. Bifocal lenses provide a practical solution by allowing wearers to see clearly at both distances without needing to switch between different pairs of glasses. This dual-zone design is essential for effectively managing the visual demands posed by presbyopia.

In contrast, monofocal lenses offer a single optical power designed for either distance or near correction but not both, making them unsuitable for presbyopia correction. Single vision lenses also serve a similar purpose as monofocal lenses, but again, they only provide vision correction for one distance. Astigmatic lenses are tailored to address astigmatism, a different vision issue caused by an irregular shape of the eye. Thus, bifocal lenses are the most appropriate choice for correcting presbyopia.