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Study sets matching "ocular anatomy"

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Study sets matching "ocular anatomy"

63 terms
Ocular Anatomy
Fibrous tunic, Vascular tunic, and Ner…
Epithelium, Bowmans membrane, Stoma, D…
Iris
120 million
Three layers of the eye
5 layers of the eye in order from anterior to posterior
Controls the amount of light entering the eye
Approximate number of rods located mainly in the periphery of…
Fibrous tunic, Vascular tunic, and Ner…
Three layers of the eye
Epithelium, Bowmans membrane, Stoma, D…
5 layers of the eye in order from anterior to posterior
425 terms
Ocular Anatomy
How many bones are in the Orbit?
What Is the general shape of the walls…
Which bone/s make up the supraorbital…
Which bone/s make up the infraorbital…
7
Triangular
The frontal bone
maxilla and zygomatic
How many bones are in the Orbit?
7
What Is the general shape of the walls…
Triangular
112 terms
Ocular Anatomy Ocular Innervation
___ usually have specialized nerve end…
Information processing occurs within ___
____ (somatic or autonomic) carry info…
The eye is richly supplied with sensor…
Afferent sensory fibers
the brain or spinal cord
Efferent fibers
- Touch ... - Pressure ... - Warmth... - Cold ... - Pain
___ usually have specialized nerve end…
Afferent sensory fibers
Information processing occurs within ___
the brain or spinal cord
165 terms
Ocular Anatomy
Location of Optic nerve
Average scleral radius
Horizontal diameter of globe
Vertical diameter of globe
0.2-0.3 mm superior and nasal
12 mm
24.1 mm
23.5 mm
Location of Optic nerve
0.2-0.3 mm superior and nasal
Average scleral radius
12 mm
118 terms
Ocular Anatomy
Frontalis
Corrugated Supercilii
Procerus
Orbicularis Occuli
origin: high on scalp; insertion: superior orbital rim... innerv…
origin: frontal bone... insertion: skin superior to medial eyebr…
origin: nasal bone... insertion: frontalis... innervation: buccal c…
origin: medial bony orbit... innervation: zygomatic and temporal…
Frontalis
origin: high on scalp; insertion: superior orbital rim... innerv…
Corrugated Supercilii
origin: frontal bone... insertion: skin superior to medial eyebr…
487 terms
Ocular Anatomy
Abnormally increased distance between…
Whitening of the eyelashes
Eyelashes turning inward
Loss of eyelashes
Telecanthus
Poliosis
Trichiasis
Madarosis
Abnormally increased distance between…
Telecanthus
Whitening of the eyelashes
Poliosis
49 terms
Ocular Anatomy
Pars Plana
Flow of tear drainage
Components of Fibrous Tunic
Components of Vascular Tunic (Uvea)
Easiest entry point of ocular surgery due to less vasculature
Lacrimal gland -->Eye --> Punctum --> S/I canaliculus --> Com…
Cornea & Sclera
Iris, ciliary body & choroid
Pars Plana
Easiest entry point of ocular surgery due to less vasculature
Flow of tear drainage
Lacrimal gland -->Eye --> Punctum --> S/I canaliculus --> Com…
188 terms
Ocular Anatomy
Most common benign orbital tumor in ad…
Most common benign orbital tumor in ch…
Most common primary intraocular tumor…
What are the two types of sinuses in t…
Cavernous Hemangioma
Capillary Hemangioma
Choroidal Melanoma
1. Filled with blood... 2. Filled with air... Paranasal sinuses ar…
Most common benign orbital tumor in ad…
Cavernous Hemangioma
Most common benign orbital tumor in ch…
Capillary Hemangioma
271 terms
Ocular Anatomy
Madarosis
What muscle layer closes the eye
What innervates the orbicularis oculi
Which portion of the orbicularis oculi…
Loss of eyelashes
Orbicularis Oculi
CN VII
Orbital portion
Madarosis
Loss of eyelashes
What muscle layer closes the eye
Orbicularis Oculi
169 terms
Ocular Anatomy Quiz 1
What is anatomical position?
Median plane is also known as the ____…
Sagittal Plane
Cross section of an eye
Head, gaze, and toes facing forward.... Arms relaxed at ride wit…
Mid-sagittal... Splits into equal left and right halves.
Right and left sides
What is anatomical position?
Head, gaze, and toes facing forward.... Arms relaxed at ride wit…
Median plane is also known as the ____…
Mid-sagittal... Splits into equal left and right halves.
165 terms
Ocular Anatomy
Location of Optic nerve
Average scleral radius
Horizontal diameter of globe
Vertical diameter of globe
0.2-0.3 mm superior and nasal
12 mm
24.1 mm
23.5 mm
Location of Optic nerve
0.2-0.3 mm superior and nasal
Average scleral radius
12 mm
16 terms
Ocular Anatomy
When sclera grows over cornea
What is rubeosis?
When does neovascularization occur?
Where does glaucoma occur?
pterygium
Abnormal vascular growth
Hypoxia in retina, vein occlusion, long-term CL wearer, diabe…
Anterior chamber. Angle
When sclera grows over cornea
pterygium
What is rubeosis?
Abnormal vascular growth
285 terms
Ocular Anatomy
Horizontal diameter of globe
Vertical diameter of globe
axial length of globe in infant
axial length of globe in a 3/yo
24 mm
23.5 mm
16-17 mm
22-23 mm
Horizontal diameter of globe
24 mm
Vertical diameter of globe
23.5 mm
72 terms
Ocular anatomy & Otic anatomy
Orbit
Eyeball/Globe
Eyelid
Dorsal eyelid
top eyelid
Orbit
Eyeball/Globe
37 terms
Ocular Anatomy
diameter of the eyeball
portion of anterior eye exposed
3 layers of eyeball wall
fibrous tunic
2.5 cm or 1 inch
1/6
fibrous tunic, vascular tunic, nervous tunic
superficial coat of eye, avascular, dense fibrous connective…
diameter of the eyeball
2.5 cm or 1 inch
portion of anterior eye exposed
1/6
44 terms
Ocular Anatomy
Sight
Protection and spread moisture/oil
Orbicularis oculi and levator palpebrae
Closes eye
Dominant, 70% of sensory receptors
The function of the eyelid
The muscles of the eyelid
The function of the orbicularis oculi, controlled by facial n…
Sight
Dominant, 70% of sensory receptors
Protection and spread moisture/oil
The function of the eyelid
45 terms
Ocular Anatomy
Internal carotid... External carotid
To ensure the brain is supplied correc…
-Neck... -Face... -Head
Superior thyroid artery
Two divisions of common carotid
What is the importance of the carotid sinus (on internal bran…
External carotid artery supplies blood to:
First branch of external carotid?
Internal carotid... External carotid
Two divisions of common carotid
To ensure the brain is supplied correc…
What is the importance of the carotid sinus (on internal bran…
6 terms
Ocular anatomy
Three tunics of the eye:
Cornea:
Sclera:
Iris:
Fibrous- Cornea, Sclera ... Vascular- Uvea (Iris, Ciliary body,…
Anterior portion of the fibrous tunic; transparent, bends lig…
Opaque; extraocular muscles insertions are in the sclera
Anterior portion of the uvea; central aperture, pupil, divide…
Three tunics of the eye:
Fibrous- Cornea, Sclera ... Vascular- Uvea (Iris, Ciliary body,…
Cornea:
Anterior portion of the fibrous tunic; transparent, bends lig…
87 terms
Ocular Anatomy
3 General axes of the eye from anterio…
Length of the eye as an adult (through…
Difference between EQUATOR and MERIDIAN
Volume and weight of the eye
1. Geometric or Anatomic axis: through sagittal section of th…
1. Birth: 16-17mm... 2. 3 years old: 22.5-23 mm... 3. 13 years old:…
EQUATOR: a line equidistant from the anterior and posterior p…
Volume: 6.5 cc... Weight: 7.5 gm
3 General axes of the eye from anterio…
1. Geometric or Anatomic axis: through sagittal section of th…
Length of the eye as an adult (through…
1. Birth: 16-17mm... 2. 3 years old: 22.5-23 mm... 3. 13 years old:…
285 terms
Ocular Anatomy
Horizontal diameter of globe
Vertical diameter of globe
axial length of globe in infant
axial length of globe in a 3/yo
24 mm
23.5 mm
16-17 mm
22-23 mm
Horizontal diameter of globe
24 mm
Vertical diameter of globe
23.5 mm
19 terms
Ocular Anatomy
3 coats of the eye:
4 general ocular components
Diameter of eye:... Horizontal
Diameter of eye:... Verticle
schlera... choroid... retina
Anterior and Posterior chambers... Lens... Vitreous
24.1mm
23.5
3 coats of the eye:
schlera... choroid... retina
4 general ocular components
Anterior and Posterior chambers... Lens... Vitreous
449 terms
Ocular Anatomy
Telecanthus
Poliosis
Madarosis
Trichiasis
abnormally increased distance between the medial canthi of th…
whitening of eyelashes
loss of eyelashes
turning inward of eyelashes
Telecanthus
abnormally increased distance between the medial canthi of th…
Poliosis
whitening of eyelashes
234 terms
Ocular Anatomy
telecanthus
poliosis
madarosis
trichiasis
abnormally increased distance between medial canthi of eyelids
whitening of eyelashes
loss of eyelashes
inward turning of eyelashes
telecanthus
abnormally increased distance between medial canthi of eyelids
poliosis
whitening of eyelashes
17 terms
Ocular Anatomy
Aperture
Anisocoria
blue circles
stop
a hole limiting the amount of light passing along an optical…
detectable difference in pupil diameter; pupils are normally…
caused by out of focus objects; formed on the image plane, wh…
affect image intensity, image spread, field of view, and dept…
Aperture
a hole limiting the amount of light passing along an optical…
Anisocoria
detectable difference in pupil diameter; pupils are normally…
57 terms
Ocular Anatomy
adnexa
Choroid
Zonules
Cataract
external to eye, 2 puncta drains per eye, canaliculus (draina…
blood/nutrient supply to retina
holds lens in place, fluid of lens made by ciliary body, lens…
clouded (Opacified Lens), product of old age (90% over 65), a…
adnexa
external to eye, 2 puncta drains per eye, canaliculus (draina…
Choroid
blood/nutrient supply to retina
Ocular Anatomy
Sclera
Choroid
RPE (retinal pigment epithelium)
Outer coat
• white of the eye... • outermost layer of eye... • made of collage…
• 2nd layer of the eye... • between sclera and retina... • vascular…
• outer layer of retina... • lies between choroid and neurosenso…
"Sclera"... • 5/6 Sclera... • 1/6 Cornea... • tunica fibrosa
Sclera
• white of the eye... • outermost layer of eye... • made of collage…
Choroid
• 2nd layer of the eye... • between sclera and retina... • vascular…
93 terms
Ocular Anatomy
Telecanthus
Poliosis
Madarosis
Trichiasis
increased distance b/w medial canthi of eyelids
whitening of eyelashes
loss of eyelashes
turning inward of lashes can be secondary to entropion
Telecanthus
increased distance b/w medial canthi of eyelids
Poliosis
whitening of eyelashes
49 terms
Ocular Anatomy
Lateral rectus
Medial rectus
Superior rectus
Inferior rectus
Moves the eye outward (away from the nose) Lets you see towar…
Moves the eye inward (toward the nose)
Moves the eye superiorly and slightly laterally. Enables you…
Moves the eye inferiorly and slightly laterally. Enables you…
Lateral rectus
Moves the eye outward (away from the nose) Lets you see towar…
Medial rectus
Moves the eye inward (toward the nose)
32 terms
Ocular Anatomy
plica semilunaris
caruncle
puncta
papilla
allows the conj to remain on the eye without stretching the b…
modified skin of goblet cells that secretes tear film
drains the tears, no lashes
hill near the puncta
plica semilunaris
allows the conj to remain on the eye without stretching the b…
caruncle
modified skin of goblet cells that secretes tear film
11 terms
Ocular Anatomy
anterior pole to posterior pole length
horizontal length of eye
vertical length of eye
eye length at birth
24 mm
23.5 mm
23 mm
16-17 mm
anterior pole to posterior pole length
24 mm
horizontal length of eye
23.5 mm
11 terms
ocular anatomy
lagopthalmos
eyelid myokymia
plica semilunaris
caruncle
incomplete closure of eyelids
lack of sleep, stress, high caffeine
homologous to nictitating memebrane or third eyelid... allows la…
highly vascular nodule of modified skin w/ large nest of acce…
lagopthalmos
incomplete closure of eyelids
eyelid myokymia
lack of sleep, stress, high caffeine
84 terms
Ocular Anatomy
lagophthalamos
eyelid myokymia
plica semilunaris
tear drainage system (steps)
incomplete closure of the eyelids
eyelid twitching
allow lateral movements of the eye... homologous to the nictatin…
lacrimal gland... lacrimal duct... eye... lacrimal punctus... canaliculus…
lagophthalamos
incomplete closure of the eyelids
eyelid myokymia
eyelid twitching
204 terms
Ocular Anatomy
Eye disorders and ocular complaints ar…
Most APCs in primary care, urgent care…
It is important to know when to treat…
The _______________ is a compact, comp…
primary care/urgent care/emergency
eye disorders
ocular disorders
eye
Eye disorders and ocular complaints ar…
primary care/urgent care/emergency
Most APCs in primary care, urgent care…
eye disorders
55 terms
Ocular Anatomy
Layers of the Eyelid
Layers of the Palpebral Conjunctiva
Major and Minor Retractors of the Eyel…
Innervation required to Open/Close the…
(1) Skin ... (2) Subcutaneous Areolar Layer... -- Loose CT... -- Levat…
(1) Epithelial Layer - extends into fornices and onto bulbar…
Major: Levator - CN3 Parasympathetic ... Minor: Muller's Muscle…
CN3 - Levator - Opens the Eye... CN7 - Orbicularis Oculi - Close…
Layers of the Eyelid
(1) Skin ... (2) Subcutaneous Areolar Layer... -- Loose CT... -- Levat…
Layers of the Palpebral Conjunctiva
(1) Epithelial Layer - extends into fornices and onto bulbar…
17 terms
ocular anatomy
Hutchinson's sign
Bell's Palsy
innervation of lacrimal gland
Parasympathetic innervation of eye
vesicles on the tip of the nose... indicates a high likelihood o…
idiopathic lesion of lower motor neurons of CN VII==>upper an…
parasympathetic fiber from CN VII( greater petrosal nerver) -…
Oculomotor nerve (III): midbrain, iris sphincter and the cili…
Hutchinson's sign
vesicles on the tip of the nose... indicates a high likelihood o…
Bell's Palsy
idiopathic lesion of lower motor neurons of CN VII==>upper an…
30 terms
Ocular Anatomy
Palpebra
Dorsal Palpebra
Central palpebra
Cilia
eyelids
Upper eyelid
Lower eyelid
Eyelashes
Palpebra
eyelids
Dorsal Palpebra
Upper eyelid
31 terms
Ocular Anatomy
Rods
Cones
Fibrous Tunic
Vascular Tunic
Does not discriminate between different colors of light. Lets…
Do discriminate colors. Require brighter light to function.
Consists of the sclera and the cornea.
Consists of the iris, the choroid and the ciliary body is res…
Rods
Does not discriminate between different colors of light. Lets…
Cones
Do discriminate colors. Require brighter light to function.
27 terms
ocular anatomy
boundaries of canine orbit
lacrimal caruncle
muscles that open eyelid
tarsus aka tarsal plate
lateral: temporalis; orbital ligament... ventral: medial pterygo…
small mount of tissue just inside medial canthus, often haire…
levator palpebrae superiosis... tarsal muscles (mueller's muscle)
fibrous thickening surrounding tarsal glands at lid margins t…
boundaries of canine orbit
lateral: temporalis; orbital ligament... ventral: medial pterygo…
lacrimal caruncle
small mount of tissue just inside medial canthus, often haire…
188 terms
Ocular Anatomy
Most common benign orbital tumor in ad…
Most common benign orbital tumor in ch…
Most common primary intraocular tumor…
What are the two types of sinuses in t…
Cavernous Hemangioma
Capillary Hemangioma
Choroidal Melanoma
1. Filled with blood... 2. Filled with air... Paranasal sinuses ar…
Most common benign orbital tumor in ad…
Cavernous Hemangioma
Most common benign orbital tumor in ch…
Capillary Hemangioma
170 terms
Ocular Anatomy
Sclera makes up what portion of the ou…
Main functions of the sclera?
embryological origin of the sclera?
What color is the sclera at gestation?
5/6 or 9/10
Protect intraocular components and to maintain overall shape…
Mesodermal
Clear-transparent. It is all embryonic tissue. ~ Becomes opaq…
Sclera makes up what portion of the ou…
5/6 or 9/10
Main functions of the sclera?
Protect intraocular components and to maintain overall shape…
10 terms
Ocular Anatomy
Cornea
Pupil
Iris
Lens
clear surface of the eye that detects light
opening formed by the iris allowing light to enter the eye
brightly colored circular muscle that adjusts the size of the…
structure behind the pupil bending light towards the retina
Cornea
clear surface of the eye that detects light
Pupil
opening formed by the iris allowing light to enter the eye
221 terms
Ocular Anatomy
4 walls of bony orbit
7 bones of bony orbit
The roof: ... 1) sep:... 2) bones:... 3) antero…
The floor: ... 1) sep:... 2) bones:... 3) below…
1) the roof... 2) the floor... 3) the medial wall... 4) the lateral wall
1) frontal... 2) lacrimal... 3) sphenoid... 4) ethmoid... 5) palatine... 6)…
1) sep orbital cavity from brain... 2) frontal and lesser wing o…
1) lateral wall by inferior orbital fissure... 2) maxilla (large…
4 walls of bony orbit
1) the roof... 2) the floor... 3) the medial wall... 4) the lateral wall
7 bones of bony orbit
1) frontal... 2) lacrimal... 3) sphenoid... 4) ethmoid... 5) palatine... 6)…
153 terms
Ocular Anatomy
What are the functions of tears?
What glandular contributors are there…
Describe the structure of tears
What are mucins?
Optical, lubricant, support for corneal transparency, bacteri…
Lacrimal gland, accessory lacrimal glands (of Wolfring & Krau…
Trilaminar:... Outermost: thin oily layer... Middle: aqueous layer…
Mucins are large heterogenous glycoproteins, which are at lea…
What are the functions of tears?
Optical, lubricant, support for corneal transparency, bacteri…
What glandular contributors are there…
Lacrimal gland, accessory lacrimal glands (of Wolfring & Krau…
38 terms
Ocular anatomy
what is the basal lamina and the retic…
cells that give structural support and…
cells that produces myelin in the CNS…
phagocytic cells that increase in numb…
basal--epithelial cell... reticular--underlying connective tissue
astrocytes
oligodentrocytes
microglia
what is the basal lamina and the retic…
basal--epithelial cell... reticular--underlying connective tissue
cells that give structural support and…
astrocytes
133 terms
ocular anatomy
What two bones comprise the lateral wa…
Which of the following muscles causes…
When are the oblique muscles responsib…
When are the recti muscles isolated fo…
Greater Wing of the Sphenoid Bone and Zygomatic Bone\n\nSome…
SUPERIOR OBLIQUE\n\nRemember, the primary actions of the supe…
When the eye is pointed towards the nose (adducted 51-55 degr…
abducting 23 degress
What two bones comprise the lateral wa…
Greater Wing of the Sphenoid Bone and Zygomatic Bone\n\nSome…
Which of the following muscles causes…
SUPERIOR OBLIQUE\n\nRemember, the primary actions of the supe…
58 terms
Ocular Anatomy
size of sclera
sclera is thickest at?
what is scleras thickness like at the…
how many glycosyaminoglycans in the sc…
-largest component of the fibrous tunic/outer layer... -covers 5…
posterior pole
thin as it approaches the equator to reach a minimum under th…
1/4 than that in the cornea
size of sclera
-largest component of the fibrous tunic/outer layer... -covers 5…
sclera is thickest at?
posterior pole
38 terms
Ocular anatomy
Inferior oblique
Synergist
Agonist
Antagonist
The shortest eye muscle
A muscle in the same eye that moves the eye in the same direc…
The primary muscle that moves an eye in a given direction is…
A muscle in the same eye that moves the eye in the opposite d…
Inferior oblique
The shortest eye muscle
Synergist
A muscle in the same eye that moves the eye in the same direc…
71 terms
Ocular Anatomy
Lateral conjunctiva lymphatics drain i…
Which gland lubricates eyelashes?
Which layer of the tear film is secret…
Which layer of the eyelid contains gob…
Preauricular lymph node- aka parotid. Medial lymphatics drain…
Zeiss : 2nd function of zeis= assists the glands of moll and…
Lipid. Older patients will tell you that their vision clears…
Palpbebral conjunctiva. - very immunologically active. - has…
Lateral conjunctiva lymphatics drain i…
Preauricular lymph node- aka parotid. Medial lymphatics drain…
Which gland lubricates eyelashes?
Zeiss : 2nd function of zeis= assists the glands of moll and…
119 terms
Ocular Anatomy
What eyelash abnormality is related wi…
The Orbicularis Oculi is innervated by…
List & describe the functions of the t…
The orbital septum serves as a barrier…
Poliosis: Whitening of the eyelashes... Madarosis: Loss of eyel…
Orbicularis Oculi is innervated by CN VII (Facial Nerve)... Orb…
*Roll, Tide, Divide*... -Muscle of Riolan (pars ciliaris): rot…
1. Infection... 2. Fat
What eyelash abnormality is related wi…
Poliosis: Whitening of the eyelashes... Madarosis: Loss of eyel…
The Orbicularis Oculi is innervated by…
Orbicularis Oculi is innervated by CN VII (Facial Nerve)... Orb…
55 terms
Ocular Anatomy
cyanolabe (blue)
chlorolabe (green)
Erythrolabe (red)
Major functions of RPE
440 nm
535 nm
565 nm
1. Phagocytosis of PR outer segments... 2. RPE pumps (transfer o…
cyanolabe (blue)
440 nm
chlorolabe (green)
535 nm
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