Digital composite photograph made from a series of digital fundus (retinal) images
Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, United States
This composite image was created by using Photoshop to manipulate and colorize monochrome frames from a fluorescein angiogram taken with a fundus camera. Photographs of the patient's fundus, or retina, were taken; then the sodium fluorescein dye was injected into the patient's arm vein. The dye was photographed as it filled the choroidal and retinal blood vessels. A matched pair of exciter and barrier filters maximized the dye's fluorescence.
Ophthalmic photography provides an ideal fabric from which to construct digital quilts of interesting shapes and patterns. The retinal images that make up this photograph are hidden from a normal world-view - an ironic twist since the eye itself is the organ of sight.
