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Sickle cell retinopathy. Sickle cell retinopathy can be defined as retinal changes due to blood vessel damage in the eye of a person with a background of sickle cell disease. It can likely progress to loss of vision in late stages due to vitreous hemorrhage or retinal detachment. [1] Sickle cell disease is a structural red blood cell disorder ...
G. ventalina is a fan-shaped colonial coral with several main branches and a latticework of linking smaller branches. The skeleton is composed of calcite and gorgonin, a collagen -like compound. The calyces in which the polyps are embedded are in two rows along the branches. Many of the smaller branches are compressed in the plane of the fan ...
Sickle cell disease (SCD), also simply called sickle cell, is a group of hemoglobin-related blood disorders typically inherited. [2] The most common type is known as sickle cell anemia. [2] It results in an abnormality in the oxygen-carrying protein haemoglobin found in red blood cells. [2] This leads to a rigid, sickle -like shape under ...
Retinopathy, or retinal vascular disease, can be broadly categorized into proliferative and non-proliferative types. Frequently, retinopathy is an ocular manifestation of systemic disease as seen in diabetes or hypertension. [3] Diabetes is the most common cause of retinopathy in the U.S. as of 2008. [4] Diabetic retinopathy is the leading ...
A sickle cell health crisis can escalate into life-threatening complications, but patients still struggle to get seen quickly in emergency rooms and also to get pain medicine.
Retinal detachment. Retinal detachment is a disorder of the eye in which the retina peels away from its underlying layer of support tissue. [1] Initial detachment may be localized, but without rapid treatment the entire retina may detach, leading to vision loss and blindness. It is a surgical emergency.
Autoimmune retinopathy. Autoimmune retinopathy (AIR) is a rare disease in which the patient 's immune system attacks proteins in the retina, leading to loss of eyesight. The disease is poorly understood, but may be the result of cancer or cancer chemotherapy. [1] The disease is an autoimmune condition characterized by vision loss, blind spots ...
The Venus sea fan is similar in appearance to Gorgonia ventalina, but has a slightly more untidy shape and short, stubby side growths coming out of the main plane. [3] In G. flabellum , the branches are flattened at right angles to the plane of the fan, while in G. ventalina , the branches are either round or flattened parallel to the plane of ...