convergence nystagmus

convergence nystagmus
a rhythmic oscillation of the eyes, in which they have a rapid adduction movement relative to each other alternating with a slow abduction movement; usually caused by a tumor of the aqueduct of Sylvius, third ventricle, or midbrain. It is often accompanied by retraction nystagmus.

Medical dictionary. 2011.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Nystagmus — Horizontal optokinetic nystagmus, a normal (physiological) form of nystagmus ICD 10 H55, H81.4 …   Wikipedia

  • Convergence insufficiency — Convergence Insufficency Classification and external resources ICD 10 H51.1 ICD 9 378.83 …   Wikipedia

  • Nystagmus — Rapid rhythmic repetitious involuntary (unwilled) eye movements. Nystagmus can be horizontal, vertical or rotary. * * * Involuntary rhythmic oscillation of the eyeballs, either pendular or with a slow and fast component. [G. nystagmos, a nodding …   Medical dictionary

  • nystagmus block syndrome — a type of squint (convergent strabismus) that results from the use of the convergence mechanism to block or dampen down nystagmus in an attempt to improve visual acuity …   Medical dictionary

  • nystagmus block syndrome — a type of squint (convergent strabismus) that results from the use of the convergence mechanism to block or dampen down nystagmus in an attempt to improve visual acuity …   The new mediacal dictionary

  • sylvian syndrome — sylvian aqueduct syndrome impairment of vertical gaze, retraction nystagmus, convergence nystagmus, convergence spasms, and poor or absent reaction of the pupils (which are usually of normal size) to light or near vision. It is caused by a… …   Medical dictionary

  • eye, human — ▪ anatomy Introduction  specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit       The eye is protected from mechanical injury… …   Universalium

  • Esotropia — Classification and external resources ICD 10 H50.0, H50.3 ICD 9 …   Wikipedia

  • Eye movement (sensory) — For other uses, see Eye movement (disambiguation). Eye movement is the voluntary or involuntary movement of the eyes, helping in acquiring, fixating and tracking visual stimuli. It may also compensate for a body movement, such as when moving the… …   Wikipedia

  • syndrome — The aggregate of symptoms and signs associated with any morbid process, and constituting together the picture of the disease. SEE ALSO: disease. [G. s., a running together, tumultuous concourse; (in med.) a concurrence of symptoms, fr. syn,… …   Medical dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”