The slit lamp is an instrument used to examine the health of the front portion of the eye. It is called a slit lamp because it uses a slit beam of light to help visualize the ocular structures in a ...

Diseases of the eye can be difficult to diagnose during a general physical examination. A doctor who specializes in treating eye problems, called an ophthalmologist, is better able to examine and ...

The earliest evidence of image magnification utilizing a magnifying glass dates back to the Book of Optics that was published by Ibn al-Haytham (Alhazen) in 1021. Starting in 1860, loupe magnification ...