Week 2.09 Developmental And Paediatric BV

Question 1

When do children get universally screening checks

Answer 1

Newborn check: cataract and major structural defects
6-8 weeks: parental concerns, red reflex
Universal screening at 4-5yrs - general observation

Question 2

Visual acuity

Answer 2

Adult levels of acuity by 12 years

Question 3

Preferential looking

Answer 3

• Forced choice
• Prefer to look at interesting rather than nothing
• If can see it will look at it
• Change SF of grating
• Below VA, fixation random between two sides

Question 4

What is the mean refractive error in newborns

Answer 4

+2.00D (+/-2)
Hyperopia increases to 6 months then rapid decline to 2 years
Premature: Less hyperopia and wider variation

Astigmatism at birth = mean 1.00DC reduces by 18-24 months

Question 5

If one parent has a squint what’s the chance and what about 2 parents

Answer 5

25-45% chance with 1 parent
78-90% chance if both parents