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Ocular A&P #6 Final

Questions Uvea, Retina, Optic Nerve (Targets for Study Guide Images!)

QuestionAnswer
Consensual light reflex, light in one eye should cause the pupils to do what? Constricts both pupils equally
There are approximately 70-80 ciliary processes. T or F True
What is the Choroid's primary function? To supply blood to the outer retina
Blood is drained from the choroid by the ________. Vortex Veins
The choroid receives its blood supply from what? The Ophthalmic artery via the long and the short ciliary arteries
Many iris nevi tend to become malignant. T or F False
What is hyphema? Blood in the anterior chamber.
What is hypopyon? White blood cells in the anterior chamber.
What area does the choroid supply? The outer retina and the foveal area (it is the sole blood supply to the fovea)
What is the vascular layer of the choroid that is next to the retina? Choriocapillaris
What layer of the choroid lies next to the retinal pigment epithelium? Bruch's Membrane
Where do drusen form? Bruch's Membrane
A posterior uveitis involves what? It is an inflammation that involves the retina and choroid (also called chorioretinitis )
Where does retinal detachment occur? Between the RPE (Retinal Pigment Epithelium) and the neurosensory retina.
What is photopic vision and what is needed to accomplish that? It is daytime vision and cones are needed for photopic vision.
There are no rods in the fovea. T or F True
Vitamin A is required for rhodopsin. T or F True
What does the retinal pigment epithelium do? It metabolizes vitamin A and collects "garbage" from the retina.
Ultraviolet radiation absorbed by the retina is __________. Over 400 NM
Name the Types of color receptors (3) Red, Blue, Green
There are 8 vortex veins. T or F False. There are 4-6.
What do the vortex veins drain? The retina and choroid.
Which converts light energy into electrical energy? Photoreceptor cells (rods and cones)
What is the macula lutea? It is the central 5.5mm of the retina which contains xenthophyll (yellow pigment)
What is the area that includes the optic disc and the macula called? Papillomacular bundle
The medullated nerve fibers in the retina are considered ___________. Normal
The medullated nerve fibers interfere with vision. T or F False
The nerve fiber layer and the optic nerve are formed by the axons of ___________. Ganglion cells
The most common type of color blindness is blue. T or F False. Red.
Color blindness is ____________ and it's inheritance is _______________. Sex-linked, Recessive
Females are ___________ of color blindness and males ____________________. Carriers, Have the disorder
Pseudopapilledema occurs in the _______________________ and it creates a false swelling of the _________________. Hyaline bodies in the optic nerve, Optic nerve
Along with pseudopapilledema, this also creates a false swelling of the optic nerve in the hyaline bodies. Drusen of the optic nerve
What is a congenital anomaly and is usually located inferior nasal? Optic nerve (disc) coloboma
What is coloboma and what can it affect (7)? A defect of ocular tissue, due to failure of part of the fetal fissure to close; it may affect the choroid, ciliary body, eyelid, iris, lens, optic nerve, or retina.
What vessels are within the optic disc (2)? The central retinal artery and the central retinal vein.
Nerve fibers in the retina are usually non-medullated (myelinated). T or F True
Nerve fibers in the optic nerve are usually medullated. T or F True
The optic disc forms a physiological blind spot, which is _______ degrees _________ to the central vision spot on a visual field. 15, Temporal
The optic disc is located temporally to the maculae. T or F False, Nasally
The optic disc is located nasal to the maculae, therefore the blind spot will be just the ___________ and located ___________. *When viewing pictures of the retina, you can tell which eye it is by noting the relationship of the optic disc to macula. Opposite, Temporally
Created by: Leequa