Pediatric Optometry: L5: Pediatric Eye Exam Continued.. Flashcards
1
Q
Allen Pictures
- Age?
- Threshold Acuity?
- Can we use for VA assessment? Why?
A
- 3-5 yrs
- 20/30
- No. Cuz pictures are OUTDATED!
2
Q
Tumbling E
- Widely used in what country?
- Equivalent to what?
- Problem with it?
- Testing?
A
- USA
- Snellen
- L-R problems
- at 20ft/10ft
3
Q
HOTV
- Age?
- Problem with it?
- Testing at what?
A
- 3-6 yrs
- Letters DO NOT BLUR OUT EQUALLY!
- at 10 ft
4
Q
Snellen/ETDRS
- Problem with it?
- ETDRS uses what kind of acuity?
A
- Letter spacing differences and different number of letters per VA LINE
- Log MAR Acuity
5
Q
Electrophysiologic Methods
- VA in a 6 Month old with this?
a. Why?
A
- 20/20 in a 6 month old
a. More attentive the child, the BETTER and NARROWER RANGE of RESPONSES
6
Q
Pupils
- How is it done?
- Pupils are usually what in a NEWBORN?
- Avg size by age 12-13?
- What can create an APD?
A
- Same as we do for adults!
- Miotic, so not very responsive to light
- about 7 mm
- VERY DEEP AMBLYOPIA
7
Q
Before testing Oculomotor Skills (Fixations, Pursuits, and Saccades), what should you make sure your patient can do?
A
- Make sure they can PROPERLY FIXATE!
8
Q
Oculomotor Control
- Do normal eye movements develop in visually impaired children?
A
- NO!
9
Q
Saccades
- Initial eye movement, usually in which direction?
- Infants use what to reach the target?
- Infants also use more what than adults to track and follow?
- Early on, saccades are what?
- When do they reach adult levels?
A
- in the right direction, but only a FRACTION of the DISTANCE!
- use a series of saccades to reach the target
- more head movements than adults.
- Hypometric w/INCREASED LATENCY!
- Adult like levels by 1 year
10
Q
Pursuits
- Infants can track an object if the following conditions are met: (4)
A
- Slow moving
- Large (12 degrees)
- Visually interesting (face)
- Short Duration (300-400 msec)
11
Q
Evaluation of Fixation
- What is the best way to evaluate fixation?
- How long should they fixate on the Near ACCOMMODATIVE TARGET?
a. 4+ = ?
b. 3+
c. 2+
d. 1+ - Expected finding?
A
- CT or isolated target fixation
- For 10 seconds
a. No FL
b. 1 FL
c. 2 FL
d. More than 2 FL - ALL Pts should be able to fixate and sustain it for 10 seconds w/no observable movement of the eyes UNLESS they’re very young, anxious, hyperactive or inattentive.
12
Q
Evaluation of Saccades
- NSUCO Oculomotor Test
a. What do they do? - What are the 4 categories of performance that are rated?
A
- Look at 1 object from another for 5 round trips (10 fixations)
Targets at HARMONS DISTANCE (10 cm from midline for each target)
No instructions given to pt to move or not move head.
- Ability; Accuracy; Head and body movement
13
Q
Ocular Alignment
- CT: How is it down?
- What other 2 tests?
- What is done with Krimsky?
A
- U/L, Alternate; Slow and Deliberate
- Hisrchberg/Kappa/Krimsky (Objective Measure)
and Bruckner
- PUT prism over the deviating eye until the reflex BECOMES EQUAL to the FIXATING EYE!!!
14
Q
Bruckner Test: Aim towards bridge of the patient
- Anisocoria
- Anisometropia:
- Strabismus
A
- Larger Pupil, BRIGHTER
- LARGER REFRACTIVE CONDITION: BRIGHTER
- Non-Fixating Eye: BRIGHTER
15
Q
Ocular Alignment
- Cover Testing
a. Age of children where they should have something checked…?
A
- 3 and older, should have SENSORY FUSION checked FIRST to confirm Binocular Status
16
Q
Cover Test
- What is an appropriate target for an infant/child?
A
- Detailed small sticker on popsicle stick, or a small toy.
17
Q
CVFs
- Number of targets used?
- Test for Infant, Toddler, Preschool aged?
- Test for School age?
- VF adult like by what age?
A
- 2 targets
- Test OU
- Test OD and OS
- VF adult like at 1 year
18
Q
Stereopsis
- When should you do this test FIRST?!
A
- If there is ANY HISTORY of an EYE TURN!
Lang 1, Randot E, Stereo Smile II Test, Randot Preschool Acuity Test, Worth 4-Dot/3 Animal Test