Refsum syndrome is understood by physicians to be a hereditary and relapsing metabolic disorder. Symptoms affect the internal organs, central nervous system, peripheral nervous system, and skeleton, as well as the skin. The disease is largely arrested via a low phytanic acid diet and plasmapheresis. What is refsum syndrome? Refsum syndrome, or Refsum-Kahlke disease, is … Refsum Syndrome: Causes, Symptoms & Treatment
For many centuries, people have been suffering from migraine, of which ocular migraine is a special form. This predominantly chronic disease represents a suffering that is extremely unpleasant and immensely reduces the quality of life of those affected. What is ocular migraine? Infographic on the causes and symptoms of migraines and headaches. Click image to … Ocular Migraine: Causes, Symptoms & Treatment
Drooping eye skin or eyelids filled with fat are not only a visual problem, but can also obstruct vision. We are talking about dermatochalasis, which can occur due to a disease or also due to family history. In almost all cases, the affected person must be treated surgically. What is dermatochalasis? Under a dermatochalasis, the … Dermatochalasis: Causes, Symptoms & Treatment
The JC virus, like the BK virus for example, belongs to the polyomaviruses, a group of non-enveloped DNA viruses. It occurs worldwide and is transmitted in childhood, at which time it can persist for life. The pathogen is the trigger of progressive multifocal leukoencephalopathy, or PML. What is JC virus? JC virus (short name: JCPyV) … JC Virus: Infection, Transmission & Diseases
Neuropsychological diagnostics comprise a series of standardized paper-and-pencil as well as computer tests to clarify cognitive deficits after brain damage. The diagnostic procedure is a prerequisite for the assessment of the cognitive status as well as the planning of subsequent therapeutic measures. Testing is performed by neuropsychologists in facilities with a neurological focus. What is … Neuropsychological Diagnosis: Treatment, Effects & Risks
Lymphoma in the brain has a special position among brain tumors. This is because it consists of cells that are not native to the brain. Compared with other brain tumors, brain lymphomas occur relatively rarely. Only three percent of brain tumors are lymphomas. What is lymphoma in the brain? Lymphoma in the brain refers to … Lymphoma in the Brain (Cerebral Lymphoma): Causes, Symptoms & Treatment
The yellow spot, also called the macula lutea, is a small area on the retina through which the visual axis passes. Within the macula lutea is the zone of sharpest vision (fovea) and also of color vision, because the approximately 6 million cone-shaped M, L, and S color sensors are concentrated almost exclusively in the … Yellow Spot: Structure, Function & Diseases
A blind spot is a small, physiologic, slightly elongated-oval visual field defect caused by the location of the optic disc, the exit gate of the collected optic nerve fibers. In the area of the optic disc, the retina is interrupted so that no light stimuli can be perceived at the site. Normally, the blind spot … Blind Spot: Structure, Function & Diseases
In medicine, Leber’s optic atrophy refers to a disease that affects the optic nerves of the eyes. It leads to degeneration of the fibers, resulting in massive limitations of vision and even blindness. What is Leber’s optic atrophy? Leber’s optic atrophy is a rare inherited disorder that affects eye health. Despite its slightly misleading name, … Lebers Optic Atrophy: Causes, Symptoms & Treatment
In night blindness, medically called hemeralopia, vision at dusk is impaired. Responsible for this is a functional weakness of the rods. These are the sensory cells of the retina that enable vision in low light conditions. What is night blindness? Night blindness can be congenital, but it can also be caused by a condition such … Night Blindness: Causes, Symptoms & Treatment
A whole series of diseases, which leads to aesthetic impairment of the face, often causes a severe and long suffering in the affected persons. This is also true of Sturge-Weber syndrome. What is Sturge-Weber syndrome? Sturge-Weber syndrome is a complex of several disease signs, which are summarized under this term. In addition, other terms exist … Sturge-Weber Syndrome: Causes, Symptoms & Treatment
Tonometry is a diagnostic measurement procedure in ophthalmology (eye care). Special equipment is used to determine the intraocular pressure. An increase in this value may indicate the presence of glaucoma, or glaucoma. What is tonometry? Tonometry is a diagnostic measurement procedure in ophthalmology (eye care). Intraocular pressure is considered an important diagnostic feature of glaucoma … Tonometry: Treatment, Effect & Risks
