locomotion of an earthworm

Sunglasses allow better vision in bright daylight, and may protect one's eyes against damage from high levels of ultraviolet light. Typical sunglasses are darkened for protection against bright light or glare; some specialized glasses are clear in dark or indoor conditions, but turn into sunglasses when in bright light. Most sunglasses do not have corrective power in the lenses; however, special prescription sunglasses can be ordered. Specialized glasses may be used for viewing specific visual information (such as stereoscopy) or 3D glasses for viewing three-dimensional movies. Sometimes glasses with no corrective power in the lenses are worn simply for aesthetic or fashion purposes. Even with glasses used for vision correction, a wide range of designs are available for fashion purposes, using plastic, wire, and other materials. People with dyslexia are generally visual, multidimensional, right-brain learners. Because visual learners are successful seeing what they are learning, images must be employed to assist them to process information. It is also great for a visual learner as a way to start to see the person who is talking. When giving verbal information, encourage the visual learner to make a mental picture of what is being discussed.