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The cherry red spot is seen in central retinal artery occlusion, appearing several hours after the blockage of the retinal artery occurs. [4] The cherry red spot is seen because the macula receives its blood supply from the choroid, supplied by the long and short posterior ciliary arteries , while the surrounding retina is pale due to retinal ...
The entire retina (with the exception of the fovea) becomes pale and swollen and opaque while the central fovea still appears reddish (this is because the choroid color shows through). This is the basis of the famous "Cherry red spot" seen on examination of the retina on funduscopy of a central retinal artery occlusion (CRAO).
Cherry-red spot as seen in the retina in Tay–Sachs disease. The fovea's center appears bright red because it is surrounded by a whiter than usual area. Specialty: Medical genetics: Symptoms: Initially: Decreased ability to turn over, sit, or crawl [1] Later: Seizures, hearing loss, inability to move [1] Usual onset: Three to six months of age ...
The macula in humans has a diameter of around 5.5 mm (0.22 in) and is subdivided into the umbo, foveola, foveal avascular zone, fovea, parafovea, and perifovea areas. [2] The anatomical macula at a size of 5.5 mm (0.22 in) is much larger than the clinical macula which, at a size of 1.5 mm (0.059 in), corresponds to the anatomical fovea. [3] [4] [5]
One of the most obvious signs of aging is our skin. As we get older, the skin becomes thinner and loses fat and elasticity, Dr. Adam Friedman, dermatologist and professor of dermatology at the ...
Ringworm. If your red spot looks circular, it could be ringworm. Ringworm is a fungal infection that presents as a red, itchy, circular rash. The fungi that cause it can live on the skin, surfaces ...
Human blood in veins is not actually blue. Blood is red due to the presence of hemoglobin; deoxygenated blood (in veins) has a deep red color, and oxygenated blood (in arteries) has a light cherry-red color. Veins below the skin can appear blue or green due to subsurface scattering of light through the skin, and aspects of human color ...
Oura Ring 4. This chic little water-resistant band provides valuable insights into your sleep, physical activity, heart rate, and stress level, and it also helps you set goals and foster good habits.