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The Marcus Gunn pupil is a relative afferent pupillary defect indicating a decreased pupillary response to light in the affected eye. [3] In the swinging flashlight test, a light is alternately shone into the left and right eyes. A normal response would be equal constriction of both pupils, regardless of which eye the light is directed at.
The first school war of the 20th century began just as the passions raised by debates over the secularization of French society were beginning to die down. This calm was short-livedĖ the school question, which was not at the forefront of the troubles that shook France, found fertile ground in the post-Separation situation to unleash French passions.
The researchers showed that the Moken children have the ability to constrict their pupils when underwater and the ability to increase the power of their eyes' lenses to the maximum when underwater. Decreasing the size of the pupil improves the eye's depth of field, reducing blur; increasing the power of the eyes' lenses also reduces blur. [19] [21]
By analogy with a camera, the pupil is equivalent to aperture, whereas the iris is equivalent to the diaphragm. It may be helpful to consider the Pupillary reflex as an 'Iris' reflex, as the iris sphincter and dilator muscles are what can be seen responding to ambient light. [2] Whereas, the pupil is the passive opening formed by the active iris.
The pupil is a hole located in the center of the iris of the eye that allows light to strike the retina. [1] It appears black because light rays entering the pupil are either absorbed by the tissues inside the eye directly, or absorbed after diffuse reflections within the eye that mostly miss exiting the narrow pupil.
The new uniform is primarily to distinguish the Junior High pupils from their peers at the primary level. The current brown and yellow khaki school uniform, locally referred to as Konkonte and nkate nkwan (groundnut soup) and worn by pupils at the basic level in public schools, was introduced over 30 years ago by the government. [132]
Dilation and constriction of the pupil Pupillary response is a physiological response that varies the size of the pupil between 1.5 mm and 8 mm, [ 1 ] via the optic and oculomotor cranial nerve. A constriction response ( miosis ), [ 2 ] is the narrowing of the pupil, which may be caused by scleral buckles or drugs such as opiates / opioids or ...
Argyll Robertson pupils (AR pupils) are bilateral small pupils that reduce in size on a near object (i.e., they accommodate), but do not constrict when exposed to bright light (i.e., they do not react). They are a highly specific sign of neurosyphilis; however, Argyll Robertson pupils may also be a sign of diabetic neuropathy.