Editing Glasses (section)

=== Sunglasses ===
{{Main|Sunglasses}}
[[File:Woman wearing sunglasses.jpg|thumb|Woman wearing [[sunglasses]]]]

Sunglasses provide more comfort and protection against bright [[visible light|light]] and often against [[ultraviolet]] (UV) light. To properly protect the eyes from the dangers of UV light, sunglasses should have UV-400 blocker to provide good coverage against the entire light spectrum that poses a danger.<ref>{{Citation |title=Sunglasses not just an accessory in the Sunshine State |url=http://www.sun-sentinel.com/brandpublishing/sfl-sunglasses-not-just-an-accessory-in-the-sunshine-state-20180312-story.html |work=Sun-Sentinel.com |date=12 March 2018 |language=en-US |access-date=10 April 2018}}</ref>

Light [[Polarization (waves)|polarization]] is an added feature that can be applied to sunglass lenses. Polarization filters are positioned to remove horizontally polarized rays of light, which eliminates glare from horizontal surfaces (allowing wearers to see into water when reflected light would otherwise overwhelm the scene). Polarized sunglasses may present some difficulties for pilots since reflections from water and other structures often used to gauge altitude may be removed.  [[Liquid-crystal display]]s emit polarized light, making them sometimes difficult to view with polarized sunglasses. Sunglasses may be worn for aesthetic purposes, or simply to hide the eyes. Examples of sunglasses that were popular for these reasons include tea shades and [[Mirrorshades (fashion)|mirrorshades]]. Many [[blindness|blind]] people wear nearly opaque glasses to hide their eyes for cosmetic reasons. Many people with light sensitivity conditions wear sunglasses or other tinted glasses to make the light more tolerable.

Sunglasses may also have corrective lenses, which requires a prescription. Clip-on sunglasses or sunglass clips can be attached to another pair of glasses. Some wrap-around sunglasses are large enough to be worn over another pair of glasses. Otherwise, many people opt to wear [[contact lens]]es to correct their vision so that standard sunglasses can be used.