Series 3 Flashcards
What is refractometry?
Refractometry is refractive measurements performed by a non-MD, non-OD.
Normal BP range?
90/60 - 120/80
Normal Breathing rate?
12-18 breaths/min
Normal pulse range?
60-100
Normal body temp range?
97.8 - 99.1 f
Normal blood sugar range?
70-92
What are the 8 parts of an HPI?
- Location
- Duration
- Context
- Modifying factors
- Quality
- Severity
- Associated signs/symptoms
- Timing
What is the difference between schirmers test 1 and schirmers test 2
- The patient is given anesthetic in order to remove reflex treating
- The patient is not given anesthetic, for testing baseline secretions + reflex tearing
What is the average axial length of the eye?
23-24mm
What is the laser procedure that uses laser to treat/remove corneal scars and other conditions?
Phototherapeutic Keratectomy
What is the refractive procedure that uses a diamond blade to make cuts radially around the cornea?
Radial Keratotomy (RK)
What does aseptic mean?
To be free from infection
What color is the argon laser?
green/blue
What color is the Krypton laser?
red/yellow
What are the two thermal lasers?
Argon and Krypton
What are the two photodisruptive lasers?
Yag and Excimer
What is this?
- Tangent screen
What is this?
Schiotz Tomometer
How do you clean Acuity projector slides?
Wipe with a dry lens wipe
How do you clean the perimeter bowl surface?
Mild detergent and water
How do you clean the lenses of a phoropter?
Don’t, call a professional
How do you disinfect the applanation tonometer?
10 min soak of hydrogen peroxide 3% OR alcohol wipe for 10 seconds (Note this is different from cleaning it! To clean just use soap and water)
Name the 5 types of slit lamp illumination
- Direct illumination
- Indirect illumination
- Diffuse illumination
- Retroillumination
- Tangential illumination
What are the 5 peaks on an A scan
Cornea, anterior of the lens, posterior of the lens, retina, sclera.
Why are PMMA (polymethylmethacrylate) contact lenses not used much anymore?
They have poor oxygen permeability
If using alcohol 70% to disinfect, how long should it stay wet on the surface?
30 seconds
When using a fundus camera to take a photo of the iris, what adjustment must be made to the fundus camera?
Use the plus axillary lens
Osmotic agents reduce intraocular pressure by:
reducing the volume of the eye
When scanning, what is a “Z” axis adjustment?
A forward and backward adjustment
When using the fundus camera to capture a fluorescein angiogram of the iris, what flash setting is needed?
High power
Which is a typical quantity of drug that is injected intra-vitreally?
point one millileters
A dark area in the center of the retinal image is usually caused by:
Poor dilation
What is a monoamine oxidase (MAO) inhibitor used to treat?
Depression
An enzymatic cleaner is used to remove ____________ from the surface of the contact lens.
Protein deposits
When calibrating the Goldmann perimeter, the brightness of the sphere should be adjusted with the intensity lever in the:
.0315 position
Which bone(s) make up the roof of the orbit?
Frontal
Which instrument uses slit-scan imaging to map corneal curvature?
Orbscan
When measuring the patient’s PD with the reflex method the patient should be looking at:
The light
What Carbonic Anhydrase Inhibitor should not be given to someone with a sulfa allergy?
Acetazolamide and methazolamide
What combination of meds is Simbrinza?
a suspension of Brinzolamide and Brimonidine tartrate
MIGS
Minimally invasive glaucoma surgery
Which type of secondary glaucoma is caused by blood in the anterior chamber?
Hemolytic Glaucoma
Which procedure creates a small “bleb” on the eye which promotes drainage of aqueous?
Trabeculectomy
Which dye is used to photograph the choroidal circulation?
indocyanine green
Tonicity is a measure of:
Osmotic pressure
Human tears contain ____ sodium chloride.
0.9%
When using the binocular balancing technique, the patient is fogged by adding _____ to the final distance correction of each eye.
+0.75
When using the binocular balancing technique, _____ is added to the eye that sees more clearly.
+0.25
Which device uses Scheimpflug imaging to measure corneal thickness?`
Pentacam
A normal tear break up time (BUT) is ___________ seconds.
15-45
Schirmer tear test strip stays in the eye for ___ minutes
5
The echoes of an A-scan that are being measured are identified by the instrument by means of:
Measuring gates
An A-scan retinal spike cannot be identified as a macular echo unless:
there are orbital fat echoes present
The 3D map of the visual field is called:
The island of vision
Almost all of the visual field defects caused by glaucoma occur:
Within the central 30 degrees of the field
Nerve fibers in the superior retina do not cross the horizontal line called the:
horizontal raphe
