Argyll-Robertson sign is a reflex pupillary rigidity with intact near accommodation of the eyes. In this case, a midbrain lesion abolishes the light responsiveness of one or both eyes. This phenomenon plays a role in disorders such as neurolues. What is the Argyll-Robertson sign? The Argyll-Robertson sign is an indication of cerebral dysfunction in the … Argyll-Robertson Sign: Function, Task & Diseases
Within the thyrotropic control loop, the Brokken-Wiersinga-Prummel control loop is an on-off feedback loop from TSH to its own formation. With the help of this control loop, TSH formation is limited. It has significance for the interpretation of TSH levels in Graves’ disease. What is the Brokken-Wiersinga-Prummel regulatory loop? With the help of the regulatory … Brokken-Wiersinga-Prummel Regulatory Circuit: Function, Tasks, Role & Diseases
The pupil is significantly involved in the visual process. It regulates the incidence of light on the retina and is thus involved in the formation of the visual impression. Through the process of stimulus processing, it adapts to the prevailing light conditions. What is the pupil? In the eye, the pupil is visible as a … Pupil: Structure, Function & Diseases
The lens is a vitreous part of the human eye and is located in the eyeball (bulbus oculi) just in front of the vitreous body. It is convexly curved on both sides (biconvex) and thus acts as a converging lens. Its function is to focus incident light so that a sharp image is formed at … Lens (Eye): Structure, Function & Diseases
The eye muscles serve the motor function of the eyeballs, accommodation of the lenses, and adaptation of the pupils. The 6 external eye muscles are able to move the two eyeballs in unison and synchronously or to focus on a gaze target. The inner eye muscles are responsible for focusing on near or far vision … Eye Muscles: Structure, Function & Diseases
The term convergence comes from the Latin word “convergere” and means “to incline toward each other,” “to lean toward.” Convergence is the position of the eyes at which the lines of sight intersect immediately in front of the eyes. What is convergence? Convergence is the position of the eyes with which the lines of sight … Convergence: Function, Tasks, Role & Diseases
The convergence reaction is the reflexive constriction of the pupils during convergence, on the one hand, and the inward movement of both eyes during fixation of near objects, on the other. Impairments of convergence can cause strabismus, among other conditions. What is the convergence response? Convergence is a specific type of opposite eye movement. Without … Convergence Reaction: Function, Tasks, Role & Diseases
Wrinkles under the eyes are often perceived by those affected as extremely disturbing, smooth skin with youthful resilience stands, after all, for vitality and a younger appearance. The extent to which wrinkles spread depends on personal predisposition, but also on one’s own lifestyle. Fortunately, wrinkles under the eyes do not result from a disease, but … Wrinkles under the Eyes: Causes, Treatment & Help
The subclavian artery is called the subclavian artery. It is responsible for the complete blood supply to the arm. What is the subclavian artery? The subclavian artery is the subclavian artery. It refers to a paired blood vessel close to the trunk. The tasks of the artery primarily include arm blood supply. Thus, together with … Subclavian Artery: Structure, Function & Diseases
Neuroophthalmology deals with defective vision caused by the so-called strabismus. It is a permanent or recurrent misalignment of the eyes. What is neuroophthalmology? Neuroophthalmology deals with defective vision caused by the so-called strabismus. Ophthalmology distinguishes between two forms of this defective vision: congenital and acquired. When a person squints, his or her eyes do not … Neuroophthalmology: Treatment, Effects & Risks
Clostridium botulinum is a rod-shaped bacterium that reproduces by forming spores. There are four different subgroups, all of which produce what is known as botulinum toxin. This can also be pathogenic (disease-causing) to humans and cause poisoning. What is Clostridium botulinum? Clostridium botulinum is classified as a gram-positive (responsive to the Gram stain method), rod-shaped … Clostridium Botulinum: Infection, Transmission & Diseases
The oculomotor nerve is the III. Cranial nerve is called. It controls numerous eye movements. What is the oculomotor nerve? The oculomotor nerve (eye movement nerve) is one of the twelve paired cranial nerves. It forms the III. Cranial Nerve and is responsible for the innervation of four of the six external eye muscles. In … Oculomotor Nerve: Structure, Function & Diseases
