Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

OcularA&P #1 Midterm

Terms & Definitions Ocular A&P: Adexna, Intro to Orbit, & some muscle questions

Emmetropia Normal vision. Rays of light focus on the retina. Absolutely no refractive error
Hypertropia Strabismus in which there is permanent upward deviation of the visual axis of an eye.
Myopia Near-sighted. Rays of light focus anterior to the retina.
Astigmatism Rays of light focus at different areas.
Posterior Pole Area of retina involving optic disc and macula.
Cranial Nerves of the Eye and Adnexa CN II, CN III, CN IV, CN V (V1,V2,V3), CN VI, CN VII,
CN II Optic Nerve (vision)- Sensory
CN III Oculomotor- motor to eye and four external ocular muscles
CN IV Trochlear- motor to superior oblique muscle
CN V Trigeminal -Sensory to the face, globe V1- Ophthalmic -upper face, lids, eye, tip of nose V2- Maxillary -Mid face V3- Mandibular -lower face (don't deal with much in Ophthalmology)
Fusion Ability to use both eyes together and have depth perception.
Bones of the Ocular Orbit Frontal, Lacrimal, Sphenoid, Zygomatic, Ethmoid, Maxillary, Palatine
Osteopathy Any disorder of the bones
Words ending in -itis Means an inflammation
Pan Involves all of an organ
Exophthalmos Forward (anterior) displacement of the globe.
Proptosis Forward (anterior) displacement of the globe. Buldging
Endophthalmitis Inflammation(usually infection) of inside of eye
Enophthalmos Recession (posterior) of globe
Cellulitis Inflammation of subcutaneous tissues
The normal average axial length of the globe 24.5mm
The four paranasal sinuses Frontal, Ethmoid, Sphenoid, Maxillary
Hyperemia Redness (erythema)
Chemosis Swelling (edema)
Ecchymosis Blood in the tissues
Ptosis Drooping lid
Normal tear pH 7.4
These muscles are involuntary (4) Dilator of iris, Mueller's superior tarsal (lid), Iris sphincter, Ciliary muscles
The rectus muscles originate from _______ and insert in ________. Annulus of Zinn - Spiral of Tillaux
Ductions involve one eye and Version involves two eyes. True or False True
Name the two vergence movements Convergence and Divergence
Concomitant Same measurements in all directions
Incomitant Different measurements in different directions
Dextroversion Right gaze
Levoversion Left gaze
Exo- Eye turning out
Infraversion Down gaze
Superior oblique originates from _______ and is innervated by ______ sphenoid bone, the IV CN
Amblyopia Suppressed vision, also known as "lazy eye"
Inferior oblique originates from _____and is innervated by ________ medial wall,the III CN
The four rectus muscles arise from __________ The Annulus of Zinn
Eso- Eye turning in
Tropia Constant strabismus
Synergist (Yoke) Muscle moving eye in same direction as agonist
Antagonist Muscles moving eye in opposite directions
Lateral Rectus arises from _________ and is innervated by the __________ Annulus of Zinn,the VI CN
Vergences are ________ movements and involve _______ Disconjugated and involve both eyes. *Side note (Disconjugated movement of eyes means rotation of the two eyes in opposite directions, as in convergence or divergence.)
Krimsky test Measures corneal light reflex deviation with prism
Hirschberg test Corneal light reflex test
Prisms Used to measure amount of strabismus
4 prism test Test for small angle esotropia
Cover-Uncover test Test to determine if it is a tropia or it is a phoria
Cross Cover Test Test to see if any stabismus is present
Forced Ductions Test performed by MD with forceps
Bielchowski Test Head tilt test for superior oblique (IVth CN) palsy
OKN (Optokinetic nystagmus) Normal, induced by moving objects
Nystagmus Rapid, rhythmic, involuntary eye movements, smooth in one direction
End-Point Nystagmus Normal, occurs on lateral versions. A jerky, physiologic nystagmus occurring in a normal individual when attempts are made to fixate a point at the limits of the field of fixation.
Phoria Stabismus only when fusion is disrupted
Agonist Primary muscle moving the eye
Hyperopia Far-sighteness. Rays of light focus behind the retina.
Created by: Leequa



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards