First, during the 1400s glasses were created (Klein). Around 1500 Johannes …show more content…
The cornea, or lens, is a transparent covering of material at the front of the eye, which creates an image of an object by mixing light in a process known as refraction (Klein). During refraction the light rays pass through the cornea and pupil and hit the lens that creates an image on the retina. The retina then sends the image to the optic nerve that makes you able to see. The eye can work like this because it has its own lens that is able to focus on an image that is given to the retina. Since your pupils grow and shrink, depending on how much light is present, the image that is given to the retina may be larger, smaller, or the same size as the object (Roberts).
Third, the eye works in many ways and helps us see the world clearly. The eye can see due to the refraction process. Glasses are used when a person's vision is not operating correctly. Glasses are a pair of lenses, held in place by a frame, which sits on the nose. Countless people today wear glasses, but others wear contact lenses that work similar to glasses. Unlike glasses, contact lenses are a flimsy piece of plastic that is placed on the surface of the eye and helps your blurred vision better