By what age have infants shown to have 20/20 vision with pattern VEP testing (objective)?
A) 1 month old
B) 6 months old
C) 1 year
D) 3 years old correct answers B) 6 months old
By what age have infants shown to have 20/20 vision with subjective testing?
A) 1 month old
B) 6 months old
C) 1 year
D) 3 years old correct answers D) 3 years old
The most common subjective method of choice for measuring VA in infants is
________________.
A) Preferred Retinal Locust
B) Pattern VEP
C) Forced Choice Preferential Looking
D) PASS correct answers C) Forced Choice Preferential Looking
What is the most common Forced Choice Preferential Looking method used in infants up to 12
months of age? correct answers Teller acuity cards
What is the threshold for forced choice testing such as Teller acuity cards?
A) 0%
B) 25%
C) 50%
D) 75%
E) 100% correct answers D) 75%
Spatial visual acuity using FPCL methods is approximately ______________ by 1 year of age.
A) 20/600
B) 20/200
C) 20/50
D) 20/20 correct answers C) 20/50
Which of the following is NOT a type of FCPL acuity?
A) Teller acuity cards
B) Broken wheel cards
C) Cardiff cards
D) ETDRS correct answers D) ETDRS
Which OKN may be abnormal in infants due to incomplete development of the cortex?
A) Temporal to nasal
B) Nasal to temporal
, C) Superior to inferior
D) Inferior to superior correct answers B) Nasal to temporal
Vernier acuity reaches adult levels by approximately which age?
A) 6 months
B) 1 year
C) 3 years
D) 7 years correct answers D) 7 years
_______________ acuity is the ability to detect a misalignment of two lines and is considered a
hyperacuity. correct answers Vernier acuity
Which of the following is NOT an example of a Recognition acuity chart used for toddlers?
A) Landolt C
B) HOTV
C) Lea symbols
D) Teller acuity cards correct answers D (Resolution acuity)
Which of the following is NOT a reason why the visual acuity is poor until age 3-5?
A) Foveal cone photoreceptor length and density does not reach adulthood until about age 4
B) Myelination of the visual pathway is incomplete
C) The visual cortex is not fully developed in infants
D) An infant's cornea is often cloudy until age 5 correct answers D
The average refractive error in full term newborns is __________D correct answers +2.00D
The average axial length for full term newborns is ___________ mm and the average axial
length in adult is _____________ mm. correct answers 16mm, 24mm
Is a premature newborn more likely to have a myopic or hyperopic refractive error? correct
answers Myopic
Are newborn babies more likely to have ATR or WTR astigmatism? correct answers ATR
Accommodation reaches adult levels by approximately ___________ months of age.
A) 1 month
B) 3 months
C) 12 months
D) 24 months correct answers B) 3 months
Do infants have a small or large depth of focus? correct answers Large depth of focus
Does divergence or convergence typically develop first in an infant? correct answers Divergence
(1 month) before Convergence (2 months)