Willebrord Snell and His Law of Refraction
willebrord snell


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.


Presbyopia Symptoms, Causes and Treatments
Presbyopia


Presbyopia is a very common vision disorder impacting approximately 3 million people in the US alone. However by consulting with an eye care professional and following their suggested treatment option a person can significantly reduce the life impact of the disorder.


Johannes Kepler
Johannes Kepler


In 1604 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 Origin of Eyeglasses
Origin of eyeglasses


The first use of spectacles 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: Introducing Spectacles
Roger Bacon


Roger Bacon's studies on the nature of light and its impact on rainbows were critical and set a foundation in understanding the principles of reflection and refraction.




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