What is the purpose of prescription sunglasses?

Prescription sunglasses serve the dual purpose of correcting vision and providing protection from harmful sunlight. They are designed specifically for individuals who require vision correction, such as those with nearsightedness, farsightedness, or astigmatism, while simultaneously offering the benefits of tinted lenses that reduce glare and block ultraviolet (UV) rays. This combination is essential for outdoor activities, ensuring that individuals can see clearly and safely in bright conditions.

Other options touch on aspects that do not accurately represent the primary function of prescription sunglasses. For instance, changing color perception is not a focus of these glasses; while they can come in various tints, the primary goal is vision correction and sunlight protection. Enhancing visual acuity in low light pertains more to lenses designed for nighttime or low-visibility conditions rather than sunglasses, which focus on bright outdoor settings. Lastly, while fashion can be a component of sunglasses, it is not their intended purpose; the main aim remains functional in terms of vision and sun protection.