Benito Daza de Valdes documented corrective vision in his books in 1623, considered the first book of optometry. In these books he addresses the properties of the eye and vision defects, corrective optical tools and dialogs between craftsmen and doctors.

Willebrord Snell was in fact the first person to document the relationship between the paths taken by light rays when crossing boundaries between two surfaces and their refractive index.

Cataracts are the clouding of the natural lens of the eye. Cataract surgery is considered one of the safest and most effective procedures in the treatment of this disorder. Find out what cataract surgery is and what you need to know. 

Braille alphabet is a tactile system created to be interpreted by the sense of touch. It was specifically designed to help those who suffer from vision disorders that severely impair, or even eliminate one's ability to read normally.

There is currently no cure for color blindness, however if researchers are able to prove this new gene therapy treatment is successful a potential cure for color blindness might be in sight.

Emerging technology, like smart contact lenses, are interesting and exciting but are we often more focused on the dazzle of the technology while overlooking its potential risks? For instance, how do smart contact lenses threaten our basic civil rights? Let's investigate.