7.1.3. Assesses children’s visual function using appropriate techniques. Flashcards
what as some some general tips
- engage child quickly
2.introduce themselves - find out fav cartoon
- Use toys they have with them.
POSTIVE vibes all way
How to see alsignmentt
corneal reflection –> hirscheberg method can use a prism until it is centered
What is pseudostrabissmus?
due to the innercanthus - broad nasal bridge
How to see eye motility
H pattern - toy in the exam
What does red reflex allow us to see?
cat / retinal excudates
red eyes must be symetric – and nice red glow.
what isleukocoria ?
coats disease / retinoblastoma
How to assess visual acuity?
use snellen at 6 years old
best corrected vision -
How to assess acuity in a px under 1 years old?
Keeler teller cards - black and white gratings - look which side they peek through.
The black and white gratinngs – poor resoltuion = cannot see the stripes
Where to hold them at?
55cm - the size of the card
How to use hundreds and thousands?
33cm = 6/30
25cm = 6/150
Px at 9 months = intrested
12 months - may pick them up
How to assess a px who is 1-3 years old?
Cardiff cards can be used.
VAnishing optotypes –> they gradually blend into the background
what is resolution?
this si the smallest angle seperation between two points - preferential looking
what is recognition?
This si identifiying form / orientation –? more senstive to pathology
What is optokinetic nystagmus?
combination or smooth / saccadic eye moevemnts which devlop at around 6 months time —> using a drum will allow us to see if these are intact
How many phases are in OKN?
Slow Phase - slwo movmeent sot track moving objects t keep it on the fovea
Fast Phase - once the object has moved out of central feild - it will snap back to the continue trackinng movements
If preferential acuity resolution or recognition?
Resolution acuity
What are kay picture tests / picture matching ?
This it when they2-3 years old - shapes and pics easy to notice to kids
what are lea cards?
2.5 years
Who can you use tumbling E for?
px 3 +
What are the logmar acuity cards?
4 letters in a box and each letter has 0.025 score – 3m
2.3-3yrs = uncrowed
3.5 - 4 - croweded
what is the near vision test?
test near vision
how much is 1mm in the heicschberg test?
1mm = 20D
what prism tests should we do? 10-20 base out test
to see recovery
How we do assess steropsis?
