Eyewear is so important because it protects you from many conditions that can potentially cause serious eye problems. At higher altitudes the atmosphere doesn’t absorb much of harmful ultraviolet light, which can cause photokeratitis and photoconjunctivitis (known as “snow blindness”), both reversible, yet very painful conditions. Prolonged exposure to ultraviolet rays can contribute to faster development of cataracts and pterygium. Eyewear also protects your eyes from twigs, branches, wind, ice particles and direct impact.
It’s a matter of personal preference. Goggles generally provide you with a better protection but aren’t as comfortable as sunglasses. They have a larger coverage area and keep your face warm. Goggles are generally better for cold and snowing conditions. They can fog easily, and it is recommended to use an anti-fogging solution or get a pair with pre-treated or double lenses and good venting system.
Prescription goggles are available, but only specialty optical shops offer lenses and prescription inserts for them. Some goggles can fit over small glasses. Prescription sunglass lenses are available at any optical store or optometry.
Polarization is a must-have feature your sunglasses and goggles should have, as it protects you from harmful UVA and UVB rays and glare.
Coatings can add such features to lenses as water-resistance and reflectivity (helps with glare). There are also anti-scratch and anti-fogging coatings available. Lenses with coating require extra care, and it is generally a good idea to follow care instructions provided with your goggles or glasses.
