Pediatric Ophthalmology MCQs & Guide
300+ questions with detailed explanations. Master pediatric ophthalmology for FRCOphth, ICO, FAICO, DNB and NEET-SS.
Pediatric Ophthalmology overview
Paediatric ophthalmology and strabismus is a high-stakes subspecialty — early diagnosis prevents irreversible amblyopia and developmental delay. Questions span amblyopia, strabismus, ROP, congenital cataract and glaucoma.
Clinical & exam importance
Paeds accounts for 8–10% of most exams. NEET-SS paediatric/strabismus fellowship is one of the most competitive sub-specialty seats. FAICO paeds depth is significant.
At a glance
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Core anatomy & physiology refresher
The foundations you need before tackling clinical and surgical MCQs.
- Visual development: VEP-measurable from birth, adult acuity by 6–8 years.
- Critical period for amblyopia: birth to 7–8 years; plastic to 12 years for some treatments.
- Axial length at birth ~17 mm, reaches adult length (~23 mm) by age 13.
- Corneal diameter at birth 10 mm; adult 11.7 mm.
- IOL power changes with axial growth — adjustments required for pediatric IOLs.
High-yield pediatric ophthalmology facts for MCQs
The facts that appear most often in real exam stems. Learn them cold.
- 1Amblyopia types: strabismic, anisometropic (≥1.5 D), deprivational (worst), bilateral ametropic.
- 2Treatment of amblyopia: refractive correction first, then occlusion or atropine penalisation.
- 3Esotropia: infantile (large angle, onset <6 months), accommodative (refractive), partially accommodative.
- 4Exotropia: intermittent (most common), constant, sensory.
- 5Inferior oblique overaction: V-pattern strabismus; treat with IO weakening procedures.
- 6Brown syndrome: limited elevation in adduction; congenital (tight superior oblique tendon) or acquired (trauma, inflammation).
- 7Duane retraction syndrome: type I (limited abduction), type II (limited adduction), type III (both); CN VI nucleus abnormality with aberrant CN III innervation.
- 8Leukocoria differential: retinoblastoma, congenital cataract, Coats disease, PHPV, ROP, toxocariasis.
- 9Retinoblastoma: most common intraocular malignancy of childhood; RB1 gene on 13q14.
- 10Group A–E retinoblastoma (International Classification); E carries highest enucleation rate.
- 11ROP screening: birth weight ≤1500 g or gestational age ≤30 weeks; first screen at 31 weeks PMA or 4 weeks chronological.
- 12ROP zones (I innermost, III outermost), stages (1–5), plus disease and aggressive posterior ROP.
- 13Treatment threshold: Type 1 ROP (any zone I stage 3, zone I plus, zone II stage 2 or 3 plus).
- 14Congenital glaucoma triad: epiphora, photophobia, blepharospasm.
- 15Goniotomy and trabeculotomy are first-line surgeries for primary congenital glaucoma.
Related pediatric ophthalmology glossary terms
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FAICO MCQs
AIOS Fellowship exam MCQs mapped topic-by-topic to the FAICO syllabus.
Retina Deciphered
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Glaucoma Exam Ready Notes
Complete glaucoma notes from pathophysiology to surgical management.
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Covered Topics
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- ✓Neuro-Ophthalmology
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Ophthal MCQs High Yield
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- ✓Cornea
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- ✓Retina
- ✓Neuro-Ophthalmology
- ✓Uveitis
- ✓Optics & Refraction
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Suggested study sequence
Six phases used by recent passers. Spread across 4–8 weeks per subspecialty.
- 1
1. Visual development
Acuity milestones, sensitive periods, refractive trajectory.
- 2
2. Amblyopia
Classification, screening, treatment ladders.
- 3
3. Strabismus
ET, XT, A and V patterns, special syndromes, surgical approaches.
- 4
4. ROP
Screening criteria, classification, treatment thresholds, anti-VEGF role.
- 5
5. Anterior segment disorders
Congenital cataract, glaucoma, anterior segment dysgenesis.
- 6
6. Posterior segment and tumours
Retinoblastoma, Coats, FEVR, juvenile retinoschisis.
20 free pediatric ophthalmology MCQs with explanations
Exam-pattern stems with the correct option marked and the reasoning spelled out. Open a question to check your answer.
Q1.A child with leukocoria, strabismus, and a heritable family history – most concerning diagnosis:
Explanation: Leukocoria in a child must rule out retinoblastoma – the most common intra-ocular malignancy in childhood, often heritable (RB1 mutation).
Q2.Critical period for visual development is approximately:
Explanation: Visual development is most sensitive in the first 2 years but plasticity extends to 7–8 years; amblyopia treatment is most effective during this period.
Q3.Most common type of childhood strabismus:
Explanation: Accommodative (refractive) esotropia is the most common childhood esotropia, typically presenting at 2-3 years in a hyperope; treated with full hypermetropic correction.
Q4.A child with constant esotropia from age 2 months, +0.50 D refraction, cross-fixation. Diagnosis:
Explanation: Infantile esotropia: onset before 6 months, large angle (>30 PD), minimal refractive error, with cross-fixation and latent nystagmus. Surgical correction by 18-24 months recommended.
Q5.Duane retraction syndrome type 1 features:
Explanation: Duane type 1: limited abduction, globe retraction with narrowing of palpebral fissure on adduction due to absence of CN VI nucleus with aberrant CN III innervation of lateral rectus.
Q6.Brown syndrome involves:
Explanation: Brown syndrome is restricted elevation in adduction (positive forced duction); congenital tight superior oblique tendon or acquired causes (trauma, inflammation).
Q7.Most important determinant of amblyopia treatment success:
Explanation: Earlier age and adherence to occlusion/atropine are the strongest predictors of amblyopia treatment success.
Q8.Krimsky test estimates:
Explanation: Krimsky test: prisms placed in front of fixing eye until the corneal light reflex centres on the deviating eye, estimating the angle of strabismus.
Q9.Most common cause of childhood blindness in low-income countries:
Explanation: Vitamin A deficiency (xerophthalmia) with measles infection remains a leading cause of preventable childhood blindness in low-income countries.
Q10.Cover-uncover test specifically detects:
Explanation: Cover-uncover differentiates tropia (manifest) from phoria; the alternate cover test reveals total deviation including phorias.
Q11.Refractive error most associated with accommodative esotropia:
Explanation: Uncorrected hyperopia (often +3-6 D) triggers excessive accommodation and accommodative convergence, producing esotropia.
Q12.Bagolini striated glass test assesses:
Explanation: Bagolini lenses produce streaks through both eyes, identifying suppression, ARC, or normal correspondence under conditions closest to natural viewing.
Q13.In a child with retinoblastoma, the most concerning prognostic feature is:
Explanation: Extraocular extension, optic nerve invasion past the lamina cribrosa, and choroidal invasion are high-risk features requiring systemic chemotherapy and orbital radiation.
Q14.Stereopsis is typically tested with:
Explanation: Stereoacuity is measured with Titmus (fly, animals, circles), TNO (random-dot), Lang and Frisby tests – essential to confirm binocular function.
Q15.Hering's law of equal innervation predicts:
Explanation: Hering's law: paired yoke muscles in the two eyes receive equal and simultaneous innervation, producing conjugate eye movements.
Q16.A 3-year-old presents with progressive proptosis and "raccoon eyes". Suspect:
Explanation: Metastatic neuroblastoma classically causes rapidly progressive proptosis with periorbital ecchymosis ("raccoon eyes") in young children.
Q17.Most common orbital malignancy of childhood:
Explanation: Rhabdomyosarcoma is the most common primary orbital malignancy in children (peak 5–7 y); presents with rapid unilateral proptosis – urgent biopsy.
Q18.Refractive correction in infant with congenital cataract is most commonly via:
Explanation: For infants <6-12 months, aphakic spectacles or contact lenses (extended-wear silicone hydrogel) are preferred; IOL implantation is increasingly used after 6-12 months.
Q19.A vertical deviation that increases when fixating eye is adducted suggests:
Explanation: Park's three-step test: in superior oblique palsy a hypertropia worsens in contralateral gaze and ipsilateral head tilt (Bielschowsky positive).
Q20.Worth four-dot test seeing two red and one green light suggests:
Explanation: Worth four-dot: seeing only the red lights (2 reds) indicates left eye suppression (red filter is usually over right eye).
Pediatric Ophthalmology FAQ
Answers to the questions residents ask most about this topic.
When should amblyopia treatment start?
What is the gold standard treatment for primary congenital glaucoma?
ROP screening criteria?
When to consider surgery for intermittent exotropia?
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