How to Choose the Right Sunglasses

Sunglasses are no longer just a fashion accessory. They are an essential protection for the eyes against ultraviolet (UV) rays from the sun.

Ultraviolet rays (UV) can not only damage the skin but also harm the eyes, especially the cornea and lens. UV exposure increases the risk of cataract development — clouding of the lens, which severely affects vision. It is also known that sunlight can provoke macular degeneration — an incurable damage to the central part of the retina responsible for overall visual acuity.

Bright light reflecting off surfaces such as snow, water, sand, or asphalt is particularly dangerous for the eyes, as it can trigger photokeratitis. This is sunburn of the cornea, also known as “snow blindness.” In cases of photokeratitis, tiny blisters appear on the cornea, similar to a burn, which heal quickly with proper treatment.

Like protective sunscreens, sunglasses should be worn not only in summer on the beach but all year round whenever the sun appears.

Sunglasses are very important for children’s vision. Children’s eyes are still developing and are particularly vulnerable to UV rays. Therefore, it is important to teach children to wear sunglasses from a young age.

Ophthalmologists and other vision specialists agree that the price of sunglasses does not necessarily indicate the level of UV protection. However, very cheap sunglasses often have low-quality lenses with defects that negatively affect optical quality.

To test the optical properties of sunglass lenses, you can use a simple method. Put on the sunglasses and focus on a vertical line. Move your head back and forth, letting your gaze follow the chosen object freely. If the vertical line changes shape and becomes wavy, you should choose another pair of sunglasses, as these have an optical defect.