define hemianopsia
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- Medical Definition of hemianopia. : blindness in one half of the visual field of one or both eyes—called also hemiopia.
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Alone we are rare. Together we are strong.â¥ Donate Today Hemophilia (Hemo = bleed; philia = tendency) is a general term for a group of rare bleeding disorders. Most forms of hemophilia are rare inherited blood clotting (coagulation) disorders caused by inactive or deficient blood coagulation proteins.
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Hemianopsia Hemianopsia, or hemianopia, is a decreased vision or blindness in half the visual field, usually on one side of the vertical midline. The most common causes of this damage are stroke, brain tumor, and trauma.
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heteronymous hemianopia heteronymous hemianopia. Also found in: Dictionary, Thesaurus. Related to heteronymous hemianopia: bitemporal hemianopsia. het·er·on·y·mous hem·i·an·o·pi·a. attitudinal hemianopia involving the upper field of one eye and the lower field of the other; or a binasal or bitemporal hemianopia.
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blackout blackout. temporary loss of vision and momentary unconsciousness due to diminished circulation to the brain and retina. Blackout refers specifically to a condition which sometimes occurs in aviators resulting from increased acceleration, which causes a decrease in blood supply to the brain cells.
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Hemispatial neglect SIGNS AND SYMPTOMS OF NEGLECT. 1  Can not or does not readily/spontaneously scan into the area of the hemianopsia. 2  No awareness that a hemi field loss exists. 3  Says doesn't see out of the eye (on the side of the neglect) 4  Bumps into things on side of the hemianopsia but doesn't learn to compensate for the problem.
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Stages of Hodgkin lymphoma The stages of Hodgkin lymphoma. The stage of the cancer means whether your cancer is localised in one area of the body or is in more than one area. The tests and scans you have to diagnose your lymphoma will give some information about the stage.Your doctor uses the stage to work out the treatment you will need. Stage 2 means Hodgkin lymphoma in 2 or more groups of lymph nodes or an organ and 1 or more group of lymph nodes. 2  In both cases, the 2 sites of lymphoma must be on the same side of the diaphragm. 3  Stage 3 means Hodgkin lymphoma on both sides of the diaphragm.
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- hyperopia hy·per·o·pi·a (hī'pə-rō'pē-ə) n. Abbr. H An abnormal condition of the eye in which vision is better for distant objects than for near objects. It results from the eyeball being too short for light rays to properly focus on the retina, thus forming a blurred image. Also called farsightedness, hypermetropia.
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- Homonymous Hemianopsia. Homonymous hemianopsia, also referred to as homonymous hemianopia is the loss of half of the field of view on the same side in both eyes. It occurs frequently in stroke, tumor and traumatic brain injuries, because of the manner in which the nasal nerve fibers from each eye cross as they pass to the back of the brain.
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Hemiparesis Hemiparesis is unilateral paresis, that is, weakness of the entire left or right side of the body (hemi- means half). Hemiplegia is, in its most severe form, complete paralysis of half of the body. Hemiparesis and hemiplegia can be caused by different medical conditions, including congenital causes, trauma, tumors, or stroke.
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- Definition of Amaurosis fugax. Amaurosis fugax: A symptom described as a shade coming down over the eye. A partial or complete loss of sight that is temporary. This temporary interference with vision is usually related to atherosclerosis in the blood vessels that supply the brain. It can also occur with excessive acceleration, as in flight.
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Quadrantanopia Quadrantanopia, quadrantanopsia, or quadrant anopia refers to an anopia affecting a quarter of the field of vision.
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hemianopsia Right homonymous hemianopia is a loss of vision in the temporal half of the visual field of the right eye and the nasal half of the visual field of the left eye. Common causes are occlusion of the posterior cerebral artery (stroke), trauma and tumours. See macular sparing.
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esotropia strabismus in which there is manifest deviation of the visual axis of one eye toward that of the other eye, resulting in diplopia; called also cross-eye and convergent strabismus. adj., adj esotrop´ic.
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Anop An anopsia or anopia is a defect in the visual field. If the defect is only partial, then the portion of the field with the defect can be used to isolate the underlying cause. Types of partial anopsia: Hemianopsia Homonymous hemianopsia.
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- Farsightedness, also referred to as “hyperopia” by eye doctors, is the common term describing eyesight that is blurry on objects that are nearby, but clear when you look at anything in the distance.So, watching TV may be a problem, but reading a highway billboard probably isn’t.arsightedness, also referred to as “hyperopia” by eye doctors, is the common term describing eyesight that is blurry on objects that are nearby, but clear when you look at anything in the distance.
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What is Quadrantanopia? Quadrantanopia is a specific kind of eye disorder that affects one quadrant of an individual's vision. This condition falls under the general category of anopia, or impaired vision. Eye experts and medical personnel use terms like these to identify parts of the visual field, or the range of vision for an individual. In quadrantanopia, one quarter of the visual field is affected. Medical personnel will generally refer to hemispheres of the visual field in terms of right and left. They may refer to the top and bottom atmospheres of the visual field as superior and inferior.
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Hemiparesis Not to be confused with Spastic hemiplegia. Hemiparesis is unilateral paresis, that is, weakness of the entire left or right side of the body (hemi- means half). Hemiplegia is, in its most severe form, complete paralysis of half of the body. Hemiparesis and hemiplegia can be caused by different medical conditions, including congenital causes, trauma, tumors, or stroke.
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Chapter 7 - The optic chiasm Wilbrand's Knee of the primate optic chiasm is an artefact of monocular enucleation. [Show abstract] [Hide abstract] ABSTRACT: The anterior chiasmal syndrome consists of a temporal hemianopia or complete visual field loss in one eye, plus a superior temporal hemianopia in the other eye.
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Amblyopia Amblyopia: Introduction. Amblyopia: An eye disorder where one eye is unable to see clearly even though it is physically normal. It is caused by a problem in the brain rather than in the eye itself. More detailed information about the symptoms, causes, and treatments of Amblyopia is available below.
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Cyanopsia Cyanopsia: A condition where everything looks bluish. Cyanopsia: Related Topics These medical condition or symptom topics may be relevant to medical information for Cyanopsia:
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Far-sightedness [edit on Wikidata] Far-sightedness, also known as hyperopia, is a condition of the eye where light focuses behind, instead of on, the retina. This causes close objects to be blurry while far objects may appear normal. As the disease worsens objects at all distances may be blurry. Other symptoms may include headaches and eye strain.
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- If you suspect you may have hemianopsia, see your doctor. If hemianopsia occurs quickly or suddenly, see your doctor immediately. Symptoms may include: 1  sensation that something is wrong with your vision.2  bumping into objects while walking, especially doorframes and people. 3  difficulty driving, especially when changing lanes or avoiding objects on the side of the road.ommon causes are stroke, brain tumor, and trauma to the brain. Normally, the left half of the brain receives vision from the right eye, and vice versa. Information from the optic nerves crosses to the other half of the brain using an X-shaped structure called the optic chiasm.
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Blood vessel anomalies - Bleeding in the brain / Brain and skull / Blood vessel anomalies - Bleeding in the brain. The term brain haemorrhage as used here means a sudden and spontaneous accumulation of blood in or around the brain. Bleeding occurring as a result of an accident will not be discussed here. Spontaneous brain haemorrhages can be of two kinds: Bleeding in the brain, also called intracerebral bleeding.
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Hemiparesis: Causes, Symptoms, Treatment, Prognosis, Complications Hemiparesis as described is a type of physical condition with weakness in one side of the body parts. The human brain is made of different lobes like Frontal lobe, Occipital lobe, Temporal lobe and Parietal lobe. Each of these lobes has a very significant role.
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Continuing education program: focusâ¦Imaging of the optic chiasm and retrochiasmal visual pathways A bitemporal hemianopsis suggests a lesion of the optic chiasm while homonymous lateral hemianopsis should lead to a search for a lesion of the retrochiasmal visual pathways. The causes of chiasmal impairment are mainly tumoral.