Urgent ophthalmology referral and childhood vision loss

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Target exams

Red flags

• A white pupillary reflex, an absent red reflex or an asymmetric red reflex in any child is retinoblastoma or a congenital cataract until proven otherwise, and it demands a same-day referral to the ophthalmology service, because the delay of weeks can convert a curable intraocular tumour into lethal extraocular disease or saddle the child with irreversible amblyopia
• A new strabismus, particularly under two years and particularly the unilateral, demands a fundus examination to exclude a retinoblastoma sitting behind the fovea before the leukocoria appears, because the tumour may destroy the central vision and cause the drift while the red reflex remains normal in some gazes
• A red eye with proptosis, reduced vision, a relative afferent pupillary defect, painful eye movement or systemic toxicity is orbital cellulitis or a sight-threatening emergency, not conjunctivitis, and it is referred immediately for imaging, intravenous antibiotics and joint ophthalmology and ear-nose-throat care
• Sudden loss of vision with headache, vomiting, a sixth-nerve palsy or a swollen disc is raised intracranial pressure with papilloedema until neuroimaging excludes a mass, because the optic nerve is being crushed and both vision and life are at stake
• A suspected chemical injury or globe rupture is irrigated copiously or shielded immediately and referred the same day, because minutes decide whether the eye survives
• An infant with poor visual behaviour, roving eye movements or no social smile by three months needs urgent ophthalmology and developmental assessment, because cortical visual impairment and septo-optic dysplasia present as delayed visual maturation and the window to support the developing visual brain closes early

Life stages

Care settings

Clinical exam formats

Board mappings

• Recognises leukocoria, the absent or asymmetric red reflex, the painful red eye with proptosis and the sudden loss of vision as the red-flag presentations that demand a same-day ophthalmology referral
• Performs the red reflex test correctly in the dim room with the direct ophthalmoscope at the newborn examination, the six-week check and every well-child visit, and refers any abnormality without delay
• Names amblyopia and the visual sensitive period as the reason that childhood vision loss is time-critical, because the developing visual cortex loses plasticity through the first seven to eight years
• Applies the tiered referral pathway from the immediate emergency through the same-day and the urgent one-to-two-day reviews to the routine clinic, matching the tier to the threat to the eye and the visual brain
• Distinguishes the sight-threatening emergencies, including the orbital cellulitis, the chemical injury, the globe rupture and the raised intracranial pressure with papilloedema, from the common conjunctivitis and the stable refractive error
• Coordinates the multidisciplinary pathway with the ophthalmology, the neurology, the endocrinology and the ear-nose-throat services across the retinoblastoma, the cortical visual impairment, the septo-optic dysplasia and the optic neuritis
• A white pupillary reflex or an abnormal red reflex in a child is retinoblastoma or a congenital cataract until proven otherwise, and it is referred the same day to the ophthalmology service
• A red eye with proptosis, reduced vision or a relative afferent pupillary defect is orbital cellulitis or a sight-threatening emergency until proven otherwise, not conjunctivitis
• The delay in the childhood vision loss costs the amblyopia and the irreversible visual deprivation, because the visual cortex loses plasticity through the first seven to eight years
• Examines the child with a suspected eye problem systematically, performing the red reflex test in the dim room, the vision assessment by age, the cover test, the pupil examination and the fundus, and triages the child into the correct referral tier
• Counsels the family of a child referred for a sight-threatening emergency about the urgency, the investigation, the likely treatment and the prognosis, balancing the reassurance against the safety
• Synthesises the tiered plan that protects the eye, the optic nerve and the developing visual brain across the immediate and the routine presentations
• Level 1: Recognition of the red-flag eye presentations and performance of the red reflex test at the newborn and well-child visits
• Level 2: Application of the tiered urgent ophthalmology referral pathway and the age-appropriate vision assessment to the triage of the leukocoria, the painful red eye and the sudden vision loss
• Level 3: Coordination of the multidisciplinary pathway across the retinoblastoma, the cortical visual impairment, the septo-optic dysplasia and the raised intracranial pressure
• The amblyopia and the visual sensitive period through the first seven to eight years as the reason that the childhood vision loss is time-critical
• The red-flag presentations of the leukocoria, the new strabismus under two years, the painful red eye with proptosis and the sudden vision loss, and the tiered same-day and urgent referral pathway
• The differential diagnosis of the childhood vision loss from the retinoblastoma and the cortical visual impairment through the optic neuritis, the papilloedema and the optic nerve hypoplasia
• Correct performance of the red reflex test and the age-appropriate vision assessment, and the recognition of the abnormal reflex that demands the same-day referral
• Structured triage that distinguishes the immediate emergency from the urgent and the routine presentations on the vision, the red reflex, the pupil and the fundus
• Communication of the urgency and the safety-net advice to the family of a child referred for an eye problem
• The red-flag eye presentations and the tiered urgent ophthalmology referral pathway that protects the eye and the developing visual brain
• The red reflex test at the newborn and well-child examinations and the correct interpretation of the abnormal reflex
• The differential diagnosis of the childhood vision loss and the multidisciplinary coordination across the retinoblastoma, the cortical visual impairment and the raised intracranial pressure
• Recognition of the leukocoria, the painful red eye with proptosis and the sudden vision loss as the presentations that mandate the immediate ophthalmology referral
• Application of the red reflex test and the age-appropriate vision assessment at the newborn and well-child visits
• Coordination of the tiered referral pathway with the ophthalmology, the neurology and the ear-nose-throat services
• Canadian approach to the tiered urgent ophthalmology referral and the red-flag triage of the childhood vision loss
• The red reflex test and the age-appropriate vision assessment as the tools that drive the correct referral tier
• The multidisciplinary pathway across the retinoblastoma, the cortical visual impairment, the septo-optic dysplasia and the raised intracranial pressure