TONIC PUPIL Meaning and
Definition
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Tonic pupil, medically known as Adie's pupil or Holmes-Adie syndrome, is a neurological condition characterized by the abnormal dilation and sluggish response of one or both pupils to light. This condition occurs due to damage to the parasympathetic system, responsible for controlling the constriction of the pupil. A person with tonic pupil will typically have one large, dilated pupil that does not constrict properly when exposed to light.
The exact cause of tonic pupil is unknown, but it is believed to result from damage to the ciliary ganglion, a structure located behind the eye that controls the muscles responsible for regulating the size of the pupil. This damage could be caused by various factors, including viral or bacterial infections, trauma to the eye, or autoimmune disorders.
Clinically, tonic pupil is characterized by several distinctive features. The affected pupil is usually larger than the normal pupil and reacts slowly or minimally to light. However, it may still have some response to focusing on near objects or during periods of emotional or physical stress, which is known as "tonic" reaction. Other symptoms may include blurred vision, reduced accommodation ability, and absent or decreased deep tendon reflexes.
While tonic pupil does not usually cause serious complications, it may lead to visual disturbances and difficulty with daily activities that require proper focusing of vision. Treatment options are primarily aimed at managing symptoms. Medications such as pilocarpine eye drops are commonly used to constrict the pupil and improve near vision. In cases where tonic pupil is associated with an underlying condition, addressing the root cause may be necessary to alleviate symptoms.
Common Misspellings for TONIC PUPIL
- ronic pupil
- fonic pupil
- gonic pupil
- yonic pupil
- 6onic pupil
- 5onic pupil
- tinic pupil
- tknic pupil
- tlnic pupil
- tpnic pupil
- t0nic pupil
- t9nic pupil
- tobic pupil
- tomic pupil
- tojic pupil
- tohic pupil
- tonuc pupil
- tonjc pupil
- tonkc pupil
- tonoc pupil
Etymology of TONIC PUPIL
The term "Tonic Pupil" has its etymology rooted in ancient Greek and Latin.
The word "tonic" originates from the Greek word "tonos", meaning "tension" or "stretching". In medical terminology, "tonic" refers to a condition of persistent contraction or spasm of muscles. It is also used to describe the continuous and sustained abnormal activity of a particular nerve.
The word "pupil" comes from the Latin word "pupilla", which translates to "little doll". "Pupilla" is the diminutive form of "pupa", meaning "girl" or "doll". This term was used to refer to the small, black hole in the center of the eye, which resembles a tiny doll or a miniature reflection. The pupil regulates the amount of light entering the eye.
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