Developmental Milestones Flashcards
According to the AOA, when should an infant his first eye exam
6 months
3 years
and prior to starting school
Resolution visual acuity reaches adult levels by what age
3-5 years
on average, a child is supposed to start walking
12 months
treatment for a baby with intermittent eye turns
remember that door the first 2 months of life, the eyes are not always working together, and infantile ts may have an ocular deviation that is present for short periods of time. In this case, Bruckerns, CT, versions, and the Hirschberg test did not show any abnormalities or asymmetry between the eyes. Thus the infant has a normal short term ocular deviation that will resolve with age. The infants parents should be educated to watch for an increase in frequency of the eye turn, especially if the same eye always turns
NLDO
may be congenital or acquired in nature. Congenital NLDO most often occurs due to membranous blockage of the valve of hasner. This usually spontaneously opens 1-2 months after birth. Conservative treatment (massage and erythromycin) for the first 6-13m of age. If spontaneous resolution of the blockage does not occur, nasolacrtimal duct probing is indicated
concerning ocular signs in an infant
excessive tearing red, crusty eyelids constant eye turn white pupil extreme photophobia
average refractive error and VA in newborns
+2.00D (+/- 0.75) and 20/600
astigmatism and newborns
average of 2.00D ATR at 6 months
emmetropization
after birth this occurs, where the eye loses 30D of power to reach a refractive state of emmetropia.
describes the processes that occur in the eye after birth to reach a refractive state of emmetropia. These processes include increasing the axial length from an average of 16mm (90D) in the newborn to 24mm (60D) in an adult, and decreasing the power of the cornea and lens. Typically stops around 18m of age
abnormal hyperopia for infants
> 3.50D
abnormal amount of hyperopia for 1-7yo
> +2.00D
abnormal amount of hyperopia for 8-12yo
> +1.50D
spatial VA is usually ____ by 1 year
20/50-20/60
does not reach adult levels until about 3-5 years of age.
resolution acuity can be measured using
OKN, teller acuity cards, or VEP
Vernier acuity
ability to detect a misalignment of two lines. It is the slowest type of visual acuity to develop and does not reach adult levels until 6-8 years of age
what tests can be performed for infants and toddlers (birth to3m)
teller, cyclo ret, near ret, Krimsky/Hirschberg, Bruckerns, versions, palpation IOPs, 20D lens and penlight for AS exam
what tests can be performed for preschool age kids
lea chart, HOTV, broken wheel, Allen pictures, american optical pictures, landolt C, tumbling E
age of maturity for CFF ( temporal vision)
4 m
age of maturity for scotopic luminosity
4-7 m
age of maturity for ptohotpic luminosity
4m
age of maturity for accommodation
3m
age of maturity for vergences
6m
age of maturity for pursuits/saccades
4-6m
age of maturity for stereo
6m