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Flashcards in Practicals Deck (16):
1

AC tap

numb -> speculum -> betadine -> 30g needle on TB syringe through limbus -> push w qtip up to 0.05cc -> ocuflox

2

applanate

10x -> touch cornea -> adjust pressure

3

injection

numb -> speculum -> mask -> betadine inferotemporal -> lidocaine jelly x5min -> wipe off jelly w betadine -> mark w tb syringe -> betadine -> inject 0.05cc using 30g -> betadine -> check vision

4

Bscan

1. vertical axial (straight on w marker up)
2. horizontal axial (straight on w marker nasal)
3. transverse (marker nasal for 12 & 6, up for 3 & 9)
4. l-mac (look temporally, point temporally @ nasal w marker towards operator)

5

max eye drops @ LAC

1. alphagan (brimonidine) TID
2. cosopt (dorzalamide + timolol) BID
3. xalatan (lantanoprost) daily

6

anterior chamber grading

1mm slit squre
1. <15
2. <25
3. <50
4. >50

7

hypopyon/hyphema grading

1. <1/3
2. <1/2
3. >1/2
4. full

8

PRP settings

1. duration 0.07
2. interval 0.1
3. power 200mW -> grey-white burn up to 300
4. 300-500um spots (200-250 on slit lamp 2/2 mag: superqud ~2, transequator ~1.5)
5. green wavelength
6. 3 confluent rows, 2 discs from fovea, 1 disc from nerve

9

Electrolysis

betadine -> lid xylocaine -> insert 30G needle into lash follicle -> bovi on coag until tissue bubbles -> remove lash (should have no resistance) -> maxitrol

10

lacrimal irrigation

3cc syringe and 23g Burnstine cannula

11

visual field algorithms
1. SITA
2. GHT
3. SWAP

1. swedish interactive thresholding algorithm: staircase strategy with assumptions of where the threshold should be
2. glaucoma hemifield test: compares superior and inferior mirror sites; asymmetry suggests glaucoma
3. blue light on yellow background to supposedly detect early glaucoma (hypothesis is glaucoma causes loss of small bi-stratified ganglion cells, which are sensitive to blue stimulus)

12

reading the HVF:
1. layout of the plots
2. OD vs. OS?
3. 24 -2 vs. 30-2 vs. 10-2
4. top 2 plots are what kind of data?
5. TD vs. PD plots? If PD worse than TD?
6. VFI. Good for detecting early glaucoma?
7. MD vs. PSD
8. gaze tracker: positive vs. negative

1. view of the patient: blind spot is temporal, OS on the viewer's left
2. a. grab the nerve triangle with which hand? b. written on the HVF c. V points nasally
3. 24degree from central (glaucoma) vs. 30degree from central (neuro) vs. 10degree from central. ("-2" means the dots straddle the lines vs. "-1" means the dots are on the lines)
4. non-normative raw data
5. age-matched vs. removes global depression (sets 7th brightest point to 0) to highly regional variation. Happy flicker (created artificially high baseline)
6. visual field index: 100% in nml, 0% in blind. Not good.
7. age-matched (accounts for lid ptosis in elders), center-weighted sensitivity loss (0 is nml, -35 extreme loss) vs. irregularity in the VF (0 is nml or blind -> most severe in moderate glaucoma)
8. eye deviation vs. blink / fell asleep

13

How to present HVF

1. type (eg. 30-2)
2. eye (e.g. OS)
3. reliability (fixation loss, FN and FP <15%)
4. pattern on PD plot (paracentral = within 15 degrees; involves fixation? clover? Rim artifact = has complete scotoma w a reading of 0 and doesn't have to be a full circle?)
5. VFI / MD / PSD

14

How to present color fundus photos

1. type (e.g. color vs. optos)
2. eye (e.g. OD - judge based on macula)
3. view (e.g. clear)
4. ON, vessels, macula, periphery

15

How to present RNFL

1. type (e.g. OCT RNFL)
2. eye
3. signal strength
4. average thickness
5. CDR
6. sectoral thickness (ISNT)

16

how to read OCT-A

1. 3x3 vs. 6x6 vs. 8x8
2. look for symmetry
3. look @ organization of the vessels