What is the primary purpose of using prescription sunglasses?

Prescription sunglasses primarily serve to provide UV protection while also correcting vision for individuals who require optical aid. The harmful effects of ultraviolet (UV) rays are well-documented, including their potential contribution to cataracts, macular degeneration, and other eye health issues. By integrating prescription lenses with a UV-blocking coating, these sunglasses allow individuals with vision problems to protect their eyes from the sun's harmful rays while still enjoying clear vision outdoors.

In addition to UV protection, prescription sunglasses can help reduce glare, which is particularly important for activities such as driving or spending time at the beach. However, the key focus remains on their role in shielding the eyes from UV radiation.

The enhancement of fashion appeal is an ancillary benefit of many prescription sunglasses, as they come in various stylish designs, but this is not their primary purpose. While reducing glare from digital screens is important in today's environment, it does not pertain to the primary function of sunglasses, which is to protect the eyes from sun exposure.