Written Card Notes Flashcards
20/30 FT TO METERS?
6/9 METERS
20/40 FT TO METERS?
6/12 METERS
20/60 FT TO METERS?
6/18 METERS
20/80 FT TO METERS?
6/24 METERS
20/100 FT TO METERS?
6/30 METERS
20/ 200 FT TO METERS?
20/60 METERS
20/300 FT TO METERS?
6/90 METERS
20/400 FT TO METERS?
6/120 METERS
Enucleation
Removal of entire eyeball leaving only muscles and orbit
ENcleation=ENtire eye
Eviseration
Removal of contents but leaving selera
Versions
Tropic or Phoria of BOTH eyes
Ductions
Tropia or Phoria of ONE eye
Marcus Gun-Jaw winking
Swinging light
Addie’s Tonic Pupil
Mydriatics always but will constrict
Abnormal shape
TEST: Add pilocarpine
Horner’s
Miosis, Ptosis, Anydrosis
Cocaine test
Argyl Robertson
Syphillus, miosis, no dilation, abnormal shape
3rd Nerve
Mydriatics, down and out
Subcutaneous
Under skin
Intravitreal
Into the eye itself on subconjunctival etc
Intravenous
Into vein
Intramuscular
Into a muscle
Suspension
Must shake to mix
Solution
No need to shake
Speed of Light
186,000 per second
Visible Light
400-800 nano meters
A-Scan
Axiel Length
Tomography
Creates 3D images
Visual Pathway (7 steps):
1) Retina
2) Optic Nerve
3) Chiasm (junction box)
4) Optic Tract
5) Lateral Geniculate Body
6) Optic Rads
7) Visual Cortex
ROOOLOV
Sterilization:
1) Boiling
2) Autoclave (MOST COMMON)
3) Germicides
Legato conjunctivitis
Dry eye syndrome
Applanation Tonometer should be checked every?
2 months
Balance at 2, 4 and 6
Lensmeter
Always Zero out eye piece
20/20 FT TO METERS?
6/6 METERS
Three types of drops:
Injected
Topical
Systemic Meds
Size of Miotic pupil
Smaller then 2 mm
Size of Mydriatic pupil?
Larger then 6 mm
Types of Lasers (2 types):
Photodistruptive Lasers
PMMA
Polymethylmethacrylate
3 Tear Film Layers
1) Outer Lipid
2) Aqueous Layer
3) Mucous Layer
Ishara color vision test for?
Red/Green color blindness
Hardy-Rand-Ritter
Red/Green/ Yellow
How many Rods? Used for what?
150 million
Night Vision
Number of Cones? Used for?
6 million
Daylight
AMD
Age Macular Degeneration-Dry vs. Wet
Presbyopia
Loss of accommodation
Aphakia
No natural lens
Pseudophakia
Lens implant
Keratometry
Measure cornea
Phoropter
Refractive Error
Vertex Distance
Glasses to cornea
Direct Pupillary Response
ONE pupil responds to light
Consensual
Both pupils respond
Sympathetic=
Mydrasis, dilator muscles
Parasympathetic
Miosis
Sphincter muscle
HIPPUS
Pupil rebounds after constriction
Incision
Cutting INTO the tissue
INcision=INto
Excision
Cutting out of tissue
Aqueous Flow Chart
Ciliary body (creating of outflow)….to pupil….Anterior Chamber…..out through mesh work (drain through)
Astheriopia
Number of problems for refractive error:
- Eyestrain
- Eye Fatigue
- Pulling sensations
- Inability to focus
Disinfection
Inhibition of micoorganisms
Sterilization
Destruction of Microorganisms
Sanitation
Clean enough to be healthy
Order of drop strength (weak to strong):
1) Tropicaminde 0.5 and 1%–Mydriacyl (2-6 hrs)
2) Cyclopentolate 1% and 2%–Cyclo (24 hrs)
3) Homatropine 2% and 5% (36 hrs)
4) Scoloplamine 1/4% (1 week)
5) Atropine 0.5% and 1% (2 weeks)
3 rings Temporally:
Base OUT
3 rings Medially:
Base IN
3 rings Superiorly
Base UP
3 rings Inferiorly:
Base DOWN
Average core a thickness:
0.5mm
Signs of an Allergic Reaction:
1) Itching
2) Redness
3) Swelling