Our Sun is an average-size star, maybe a little smaller than most stars. Stars the size of our Sun are known as Dwarf Stars. The largest stars can be 10 times larger across then the Sun. These are called Giant or SuperGiant stars. The very smallest stars are not much bigger than the planet Jupiter.
People with round faces look good in these frames: 1  Rectangular & square shaped glasses are your best match. Styles like the Wayfarer are flattering. 2  Frames that are wider than the face add more of a balance to your soft features, enhance your face and even make it appear longer and slimmer.
The type of vision problem that you have determines the shape of the eyeglass lens. For example, a lens that is concave, or curves inward, is used to correct nearsightedness, while a lens that is convex, or curves outward, is used to correct farsightedness.To correct astigmatism, which is caused by distortions in the shape of the cornea, a cylinder shaped lens is frequently used.n the past, eyeglass lenses were made exclusively of glass. Today, most eyeglasses are made of high-tech plastics. These new lenses are lighter, do not break as easily as glass lenses, and can be treated with a filter to shield your eyes from damaging ultraviolet light.