Examination of the anterior segment: external structures and appendages, eyelids and eyelashes, conjunctiva and sclera, cornea, anterior chamber, iris and pupil, lens, anterior vitreous. A slit lamp is a microscope with a bright light that is used during an eye exam. It allows the ophthalmologist to take a closer look at the different structures in the front and inside of the eye. It is a key tool for determining eye health and detecting eye diseases.
The slit lamp is an energy-efficient microscope combined with a high-intensity light source that can be focused as a thin beam. The doctor will use a low-power microscope, along with a slit lamp, which is a high-intensity light. They will look closely into your eyes. The slit lamp has different filters to obtain different views of the eyes.
Some doctor's offices may have devices that capture digital images to track changes in the eyes over time. It wasn't until 1919 that several improvements were made to the Gullstrand slit lamp manufactured by Vogt Henker. The first slit lamp concept dates back to 1911, attributed to Allvar Gullstrand and his large glare-free ophthalmoscope. A slit lamp is an instrument that consists of a high-intensity light source that can be focused to make a thin layer of light shine on the eye.
It will then turn on the slit lamp and focus a narrow, high-intensity beam of light toward the eye. At this time, the great importance of color temperature and luminance of the light source for examinations with slit lamps was recognized and the basis for examinations with non-red light were created. One sign that can be seen on the exam with a slit lamp is a flash, which is when you see the slit lamp beam in the front chamber.