Slit lamps are prohibitively expensive in the third world areas of India where they are most needed. An invention that’s been around for over a hundred years, the slit lamp is a simple-in-concept way ...

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 ...

The slit lamp is an instrument consisting of a high-intensity light source that shines a thin layer of light into the eye. It is used in conjunction with a biomicroscope to examine of the anterial and ...