Kepler wrote a book titled Astronomia Pars Optica, earning him the title of founder of modern optics. It was in this book that he documented his observations, experiments and formulas accurately depicting the process of refraction within the eye.

The first use of spectacles and eyeglasses was observed in the late thirteenth century by Friar Giordano da Pisa on the occasion of a meeting with a craftsman living near Pisa, Italy.

Roger Bacon’s studies and observations led him to make the earliest recorded comments regarding the use of lenses for optical purposes.

Learn commonplace techniques that can be used to insert contact lenses. Depending on your preference and ability there find out which technique you should use to insert your contacts.

There are 4 easy steps to removing contact lenses, which include cleanliness, eye preparation, eye manipulation, and the removal of the contact lens.

Farsightedness, Hyperopia and Hypermetropia all refer to a disorder where the refraction, or bending of light, as it passes through the eye's cornea and lens, causes the light to focus onto a virtual point behind the retina resulting in blurred vision.