CO CO Pediatric Eye Development & Vision Screening 2 — Questions and Answers
Question 1: Which vision screening approach does the American Academy of Pediatrics recommend for children aged 3–5 years?
- Cover-uncover test only
- Photoscreening or autorefraction (Correct answer)
- Distance Snellen acuity chart only
- Near card testing alone
Correct answer: Photoscreening or autorefraction
The AAP recommends photoscreening or autorefraction for children aged 3–5 years, as these instrument-based methods are reliable in young, pre-cooperative children.
Question 2: Which neonatal ocular condition can cause permanent severe vision loss if not treated within the first weeks of life?
- Congenital nasolacrimal duct obstruction
- Retinopathy of prematurity stage 1
- Congenital cataracts (Correct answer)
- Physiologic neonatal esotropia
Correct answer: Congenital cataracts
Congenital cataracts cause visual deprivation amblyopia and must be treated within the first weeks of life to prevent permanent, severe vision loss.
Question 3: The approximate best-corrected visual acuity of a healthy full-term neonate at birth is:
- 20/200
- 20/400–20/600 (Correct answer)
- 20/100
- 20/800
Correct answer: 20/400–20/600
At birth, a full-term neonate has visual acuity of approximately 20/400 to 20/600 because the visual system is still immature.
Question 4: The Worth 4-Dot test primarily assesses:
- Stereoacuity in arc seconds
- Binocular sensory fusion and suppression (Correct answer)
- Contrast sensitivity
- Color vision deficiency
Correct answer: Binocular sensory fusion and suppression
The Worth 4-Dot test evaluates binocular sensory fusion and detects suppression or diplopia at distance and near.
Question 5: Congenital (infantile) esotropia is typically characterized by:
- Small angle deviation less than 10 PD
- Large, constant angle greater than 30 PD (Correct answer)
- Variable angle that resolves spontaneously
- Onset reliably after 6 months of age
Correct answer: Large, constant angle greater than 30 PD
Congenital (infantile) esotropia is typically characterized by a large, constant angle of deviation greater than 30 prism diopters present from birth or within the first 6 months.
Question 6: Which refractive error is most closely associated with accommodative esotropia?
- High myopia
- Hyperopia (Correct answer)
- Astigmatism
- Anisometropia
Correct answer: Hyperopia
Accommodative esotropia is most commonly associated with uncorrected hyperopia, as excessive accommodation drives convergence and causes esotropia.
CO CO Pediatric Eye Development & Vision Screening 2
Which vision screening approach does the American Academy of Pediatrics recommend for children aged 3–5 years?