What is the medical term for eye ball?
What is the medical term for eye ball?
The correct term is ecchymosis of the eyelid. The condition recovers by itself within 2-3 weeks while changing in colour to yellow.
Which eye muscle is responsible for looking down and away?
inferior rectus muscle
The antagonist of the superior rectus muscle is the inferior rectus muscle, which depresses the eye, allowing the eye to look down.
What causes ophthalmoplegia?
Ophthalmoplegia can be caused by congenital abnormalities, trauma, complications of viral infections, or disorders that affect the nervous system, including multiple sclerosis, cerebral tumours, migraines, and vascular (blood vessel) disease such as that associated with diabetes.
What is 4th nerve palsy?
Fourth nerve palsy means that a certain muscle in your eye is paralyzed. It is caused by disease or injury to the fourth cranial nerve. In children, it is most often present at birth (congenital). In adults, it is most often caused by injury.
What is 6th cranial nerve?
Cranial nerve six (CN VI), also known as the abducens nerve, is one of the nerves responsible for the extraocular motor functions of the eye, along with the oculomotor nerve (CN III) and the trochlear nerve (CN IV).
What does ot stand for medical?
occupational therapy
Despite high demand and job growth well above the national average, occupational therapy (OT) remains one of the healthcare industry’s best-kept secrets.
Which muscle moves the eye upward?
superior rectus
The superior rectus is an extraocular muscle that attaches to the top of the eye. It moves the eye upward.
Where are the ciliary muscles?
The ciliary muscle is elongated, triangular in shape, and located beneath the anterior sclera just posterior to the limbus. The shortest side of the triangular region faces anterior-inward and it is to this region of the ciliary body that the base of the iris inserts.
What are the eye muscles?
The human eye has six eye muscles. They are split into two primary groups: the recti muscles and the oblique muscles. The four recti muscles are the lateral rectus, the medial rectus, the inferior rectus, and the superior rectus while the two oblique muscles are the inferior oblique and the superior oblique.
What is Visual paralysis?
Ophthalmoplegia is the paralysis or weakness of the eye muscles. It can affect one or more of the six muscles that hold the eye in place and control its movement.
How does the ciliary muscle help with vision?
This pulls on the lens capsule, which flattens the lens and adjusts visual acuity for distant vision. When the ciliary muscle contracts in response to parasympathetic stimulation, this reduces tension on the suspensory ligaments, and the capsule of the lens is relaxed.
What are drugs that prevent ciliary muscle contraction?
Drugs that are antagonists at muscarinic receptors prevent ciliary muscle contraction and adjust the lens for viewing distant objects, with blurring of near vision. This state is called cycloplegia ( Fig. 50.1 ).
When does the ciliary muscle contract as a whole?
Although the muscle fiber orientations differ, the entire ciliary muscle contracts as a whole during accommodation.
Where is the ciliary body in the eye?
The ciliary body is located in the middle of the eye, meaning it can be found on the eye’s inner wall, behind the iris. The ciliary body also forms a ring around the lens, helping the lens hold shape and adjust focus. Behind the ciliary body is the vitreous humor, a fluid made up of mostly water, which helps the eye retain its fullness. 3
