Key Structures of the Eye Flashcards
What is A?
Optic nerve
What is B?
Central retinal artery and vein
What is C?
Optic Disc
What is D?
Macula -
The macula is part of the retina at the back of the eye. It is only about 5mm across but is responsible for all of our central vision, most of our colour vision and the fine detail of what we see.
The macula has a very high concentration of photoreceptor cells that detect light and send signals to the brain, which interprets them as images. The rest of the retina processes our peripheral (side) vision. Macular disease causes loss of central vision.
What is E?
Sclera
the white outer layer of the eyeball. At the front of the eye it is continuous with the cornea.
The sclera provides the eyeball with structural strength and protects against penetration and rupture.
What is F?
Retina
retina is an essential part of the eye that enables vision. It’s a thin layer of tissue that covers approximately 65 percent of the back of the eye, near the optic nerve. Its job is to receive light from the lens, convert it to neural signals and transmit them to the brain for visual recognition.
What is G?
Lateral rectus muscle
What is H?
Anterior Chamber
What is I?
Lens
The lens is a transparent biconvex structure in the eye that, along with the cornea, helps to refract light to be focused on the retina.
What is J?
Cornea
cornea, helps to refract light to be focused on the retina
What is K?
Iris muscles
What is L?
Ciliary muscles
What is M?
Medial rectus muscle
What is A?
Pupil
The function of the pupil is clearly that of controlling the amount of light entering the eye, and hence the light reflex.
What is B?
Lacrimal gland
In human physiology, the lacrimal glands are paired, almond-shaped exocrine glands, one for each eye, that secrete the aqueous layer of the tear film.
What is I?
Inner canthus
The medial corner of the eye where the upper and lower eyelids join.
What is D?
Conjuctiva
The conjunctiva is a tissue that lines the inside of the eyelids and covers the sclera (the white of the eye).
What is E?
Limbus
The corneal limbus is the border of the cornea and the sclera (the white of the eye). The limbus is a common site for the occurrence of corneal epithelial neoplasm.
What is F?
Iris
The colored part of the eye which helps regulate the amount of light entering the eye.
What is G?
Nasolacrimal duct
The nasolacrimal duct (also called the tear duct) carries tears from the lacrimal sac of the eye into the nasal cavity. The duct begins in the eye socket between the maxillary and lacrimal bones, from where it passes downwards and backwards.
What is H?
Lacrimal sac
What is C?
outer canthus
lateral
