Vishnevsky Spot

Cherry spot - white-red spots on the skin and mucous membranes due to prolonged venous stasis, for example, as a result of alcohol consumption or heavy blood loss, usually several hours after the incident. The cherry color of the spots is due to hemoglobin, which, under the influence of atmospheric oxygen, becomes red, and after the reduction of oxyhemoglobin into methemoglobin - the blue color of venous blood, then pale blue or pale purple due to the breakdown of methemoglobin

Vishnevsky P.I. is a forensic physician, pathologist, who wrote a number of scientific works on the anatomy and pathology of the eye and primarily entered the history of ophthalmology with his studies of Cherry spots. This concept was introduced into literature by the Russian surgeon Pyotr Ivanovich Vishnevsky at the beginning of the 20th century. It has become key to determining the main causes of the development of retinal and vitreous dystrophy - one of the most common diseases of the visual system in mature and elderly patients. Cherry spots usually appear as a perilimbal, grayish translucent area occupying or near the optic disc. It is an area of ​​retinal ischemia caused by various causes and is also called subretinal hypoxic hole or true pathological retropupillary degenerating retinal hole.