Some goggles come equipped to easily change out the lens. This is useful in changing light conditions. For example, if you start the day and it is cloudy, and then later on in the day it becomes sunny you will want a lighter lens in the morning and a darker one in the afternoon. Multiple types of lenses are available for goggles with interchangeable lenses. The lenses vary in tints and VLT - Variable Light Transmission - which indicates the percentage of light let through the lens. If a goggle does not have interchangeable lenses, it typically comes with a lens that is decent in all conditions.
Spherical vs. Cylindrical Lenses
The two most common types of goggle lenses are spherical and cylindrical (flat). Spherical lenses provide reduced susceptibility to fogging and typically better optic performance. Cylindrical lenses have the advantage of being lower profile and are typically lower in price, while still providing excellent optical clarity.
Includes Two Lenses
Sometimes goggles that have interchangeable lenses will come with two lenses for different light conditions. For example, a low light and a bright light lens.
Goggle fit is based on approximate face size and also personal preference. In general, a small frame will fit someone with a smaller face. However, someone with a small face might prefer more coverage and therefore opt for a large fit. Goggle fit, for the most part, is not precise in the way that boot sizing is, for example.
Goggles Shopping Guide - The Basics:
Need help finding the perfect Goggles? Goggles are often the lowest hanging fruit to improving your skiing. If it's hard to see then it's hard to ski. At minimum, all of our goggles have double lenses to prevent fogging. Also look for are spherical lenses to minimize distortion. Adjustment for different light conditions is a worthwhile feature to look for. This is achieved via replaceable lenses with differing tints or photochromic lenses that automatically change tint with sunlight. Read More... »