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Concept
Rétinographe
Résumé
Fundus photography involves photographing the rear of an eye, also known as the fundus. Specialized fundus cameras consisting of an intricate microscope attached to a flash enabled camera are used in fundus photography. The main structures that can be visualized on a fundus photo are the central and peripheral retina, optic disc and macula. Fundus photography can be performed with colored filters, or with specialized dyes including fluorescein and indocyanine green.
The models and technology of fundus photography have advanced and evolved rapidly over the last century. Since the equipment is sophisticated and challenging to manufacture to clinical standards, only a few manufacturers/brands are available in the market: Welch Allyn, Digisight, Volk, Topcon, Zeiss, Canon, Nidek, Kowa, CSO, CenterVue, Ezer and Optos are some example of fundus camera manufacturers.
The concept of fundus photography was first introduced in the mid 19th century, after the introduction of photography in 1839. In 1851, Hermann von Helmholtz introduced the Ophthalmoscope, and James Clerk Maxwell presented a colour photography method in 1861.
In the early 1860s, Henry Noyes and Abner Mulholland Rosebrugh both assembled fundus cameras and tried fundus photography on animals. Early fundus photos were limited by insufficient light, long exposures, eye movement, and prominent corneal reflexes that reduced the clarity detail. It would be several decades before these problems could be rectified.
There has been some controversy regarding the first-ever successful human fundus photo. Most accounts credit William Thomas Jackman and J.D. Webster, since they published their technique, along with a reproduction of a fundus image, in two photography periodicals in 1886.
Three other names played a prominent role in early fundus photography. According to some historical accounts, Elmer Starr and Lucien Howe may have been first to photograph the human retina. Lucien Howe, a well-known name in Ophthalmology, and his assistant, Elmer Starr, collaborated on the fundus photography project in 1886–88.
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