Look for sunglasses that meet the European safety standards. This means they will be of good optical quality with break-resistant lenses, providing high levels of protection against ultraviolet light, while not distorting colours. It’s worth buying a pair with a dark tint and with plastic rather than glass lenses, for safety reasons. One of the key functions of sunglasses is to reduce the amount of sunlight entering the eye. Look for a pair offering a light reduction of up to 80%,
that is they will allow in only 20% of the sunlight. The size of the lens - the area shielded - affects light admitted.
Recommended makes: Most High Street and designer brands.