Disorders associated with headaches? - ANSWERHypertension or Brain Tumor
Headaches caused by refractive error will not appear during? - ANSWER1. Not appear
at night
2. Will not appear during sleep
3. Will not appear when you wake up
Where is the aqueous humor located? - ANSWERBetween the lens and the cornea.
How many rods are there? - ANSWER125 million
Where are the rods located? - ANSWERIn the retina
How many cones are there? - ANSWER6 million
Where are the cones located? - ANSWERIn the retina.
Rods are best in what lighting condition? - ANSWERdim light
Without rods what condition will occur? - ANSWERnight-blindness
Rods are good in what color light? - ANSWERRed
What type of drops are used to dilate the eyes? - ANSWERMydriatic drops
What type of drops are used to dilate the eyes and paralyze the fine focusing muscle for
near vision? - ANSWERCycloplegic drops
Measuring PD starts from where and ends where? - ANSWERNasal side of right pupil
to the temporal side of the pupil on the patients left eye.
What is Rhodopsin? - ANSWERRod pigment. (allows for visual purple)
Rhodopsin forms in ______ and is destroyed by _____? - ANSWERforms in dark, and
is destroyed by light
Rhodopsin is composed of what Vitamin? - ANSWERVitamin A (deficiency causes night
blindness)
What is Adie's Syndrome? - ANSWERTonic Pupil. (pupil responds to light stimulation
very slowly)
,How do you measure a patient's PD when they can only see from one eye? -
ANSWERmeasure from center of the pupil of the good eye to the center of the bridge of
the nose
How do you measure a patient's PD when they have unequal pupils? -
ANSWERmeasure from nasal side of the limbus of patients right eye to the temporal
side of the limbus of the left eye.
How do you measure a patient's PD when they have a squint? - ANSWERMeasure from
the inner canthus of one eye to the outer canthus of the opposite eye.
What are the most important disorders to ask patients about? - ANSWERDiabetes
High Blood Pressure (HTN)
Heart Health/ Cardiovascular Issues
Arthritis
What are the main symptoms of diplopia? - ANSWERLoss of alignment of eyes
(covering one eye will always eliminate the second image)
What is the cause of light flashes? - ANSWERRetinal detachment
What is the cause of Ptosis? - ANSWER3rd Nerve palsy or Diabetes
What is the cause of Diplopia? - ANSWERThyroid Disorder
Diabetes
3rd Nerve Palsy
Myathenia Gravis
What is the cause of sudden loss of vision? - ANSWERMacular degeneration
Retinal Detachment
Retinal Vein or Artery Occlusion
Retrobulbar Neuritis
What is the cause of Foreign Body Sensation (FBS)? - ANSWERCorneal Abrasion
Herpes Simplex
What is the cause of blurred distance vision in adults? - ANSWERDiabetes
Cataracts
Macular Edema
What is the cause of Halos around lights? - ANSWERAngle Closure Glaucoma
Cataracts
What is the cause of spots before the eye? - ANSWERRetinal Tear
Vitreous Detachment
, What are the most important items to ask patients during work up? - ANSWER1.
Present and Past Health History
2. Medication (current and exact name/ purpose)
3. Allergies (drug, inhalants, contactants, food, injections, ingestants)
What symptoms are associated with Acute conjunctivitis? - ANSWERDischarge
Pain
Blurred Vision
What organism is the cause of Acute Conjunctivitis? - ANSWERStaph Aureus
What are some important familial history of common ocular defects? - ANSWERMyopia
Strabismus
Glaucoma
What are the 6 steps to taking history? - ANSWER1. Chief Complaint
2. Secondary Problems of the eye
3. Systemic or general illness (current)
4. Past ocular disorders
5. Wear contacts or glasses?
6. Therapies, response to therapies
What are the three main layers of tears? - ANSWEROily Layer (outer)
Aqueous Layer (middle)
Mucin Layer ( inner)
What is the flow path of the aqueous humor? (PPATSA) - ANSWER(PPATSA)
Posterior Chamber---Pupil---Anterior Chamber---Trabecular Meshwork---Schlemm's
Canal---Aqueous Vein
Lens of the eye? - ANSWERA biconvex structure that light passes through.
Vitreous Body? - ANSWERFluid filled space located behind the lens, occupies 2/3rds of
the volume of the eye.
Name the drops used that do not have cycloplegic effects.
(CHEEP) - ANSWERcocaine (anesthetic)
hydroxaphetamine
eucatropine hydrochloride
epinepherine (adrenalin)
phenylephrine (not used anymore, bad for heart)
Example of Cycloplegic Agents.