This article is written for the solicitors handling paediatric clinical negligence claims and for the clinicians who advise them. It explains why strabismus is a high-risk area in paediatric ophthalmology claims and the clinical standards a reasonably competent practitioner is expected to follow, as viewed by an ophthalmology expert witness.
1. Why strabismus matters in litigation
Strabismus disrupts the development of coordinated binocular vision. If untreated or recognised too late, it can lead to irreversible amblyopia, loss of stereopsis, impaired depth perception, difficulties with reading, sports, and coordination, psychosocial impact, and long-term functional impairment. In many medico-legal cases the question is not whether the strabismus existed, but whether clinicians acted quickly and correctly in response.
2. Early recognition is crucial
Competent recognition of strabismus requires assessment of fixation and following, Hirschberg or cover testing, accurate acuity measurement appropriate for age, awareness of parental concerns, and recognition of risk factors such as hypermetropia or family history. A common breach in litigation is the failure of a GP, optometrist, or community practitioner to identify an abnormal deviation or to recognise that an apparent intermittent deviation was increasing in frequency or angle. A subtle esotropia that is missed at age two may lead to lifelong consequences. The window for preventing amblyopia and developing stereopsis is narrow.
3. Failure to refer: a major medico-legal pitfall
Strabismus should prompt referral to paediatric ophthalmology or orthoptics without delay. Breach occurs when:
- symptomatic children are observed instead of referred
- referrals are delayed despite parental concern
- alignment abnormalities are attributed to normal variation
- children are reassured without proper examination
- practitioners assume the child will outgrow the condition
Referral pathways exist precisely because strabismus requires early, specialist assessment. Litigation often arises when referral was delayed beyond the stage at which amblyopia could still be reversed.
4. The role of cycloplegic refraction in strabismus cases
Uncorrected refractive error is a significant driver of strabismus, particularly esotropia. Standards of care require cycloplegic refraction for all esotropias, recognition of any accommodative component, and accurate optical correction as first-line management. Failure to perform cycloplegia or misinterpretation of the results is a recurrent breach in negligence cases relating to strabismus. Optical correction alone may realign the eyes and resolve the deviation. When it is omitted, delays are magnified and harm becomes avoidable.
5. Monitoring and follow-up: essential for safe practice
Clinicians must review regularly, monitor acuity and ocular alignment, adjust treatment when improvement plateaus, escalate to atropine penalisation or patching when required, and involve paediatric ophthalmology or orthoptics early. Litigation frequently arises when children are lost to follow-up, or when long intervals allow amblyopia to become irreversible. Documentation of follow-up plans is essential.
6. Surgical intervention: timing and indications
For non-accommodative deviations or residual strabismus after optical correction, timely surgery may be required. Breach of duty may occur when surgery is delayed despite a stable deviation, when clinical concerns raised by orthoptists are not actioned, when pre-operative planning is inadequate, or when post-operative follow-up is insufficient. Although surgical technique rarely forms the basis of litigation in strabismus, the timing of surgery is frequently challenged.
7. Causation: what the expert must establish
Causation in strabismus cases requires the expert to determine whether earlier recognition or referral would have prevented amblyopia, whether the delay allowed stereopsis to be lost, the extent of binocular vision achievable with timely treatment, whether the deviation would have required surgery regardless, and the long-term impact on function and occupational choices. The court relies on the expert to explain how neurovisual development interacts with clinical decisions.
8. Prognosis and long-term consequences
Permanent strabismus or loss of stereopsis can influence depth judgement and spatial awareness, reading and learning speed, driving eligibility, performance in sport and practical tasks, future occupational limitations, and psychosocial confidence and peer interaction. Experts must articulate these consequences in a clear, structured manner that assists the court in quantifying future risk and loss.
9. Practical guidance for solicitors
When assessing a strabismus case, solicitors should obtain all orthoptic and optometry records, review referral timelines, analyse visual acuity progression, assess whether cycloplegic refraction was performed, identify missed opportunities where the deviation increased, and seek early specialist opinion to determine whether harm was avoidable. Timelines are critical. A few months can determine the difference between reversible and irreversible harm.
Conclusion
Strabismus is one of the most time-sensitive conditions in paediatric ophthalmology. When primary practitioners fail to recognise or refer promptly, or when follow-up is inadequate, irreversible harm can result. For solicitors, understanding the medico-legal framework around strabismus is crucial to identifying breach and establishing causation. Expert evidence must explain clearly how the child's visual system develops, what should have happened clinically, and how delays influenced the final outcome.
Frequently asked questions
Why is childhood strabismus more than a cosmetic concern?
Strabismus disrupts the development of coordinated binocular vision. If untreated or recognised too late it can lead to irreversible amblyopia, loss of stereopsis, impaired depth perception, difficulties with reading, sports and coordination, psychosocial impact, and long-term functional impairment.
When does failure to refer amount to breach in strabismus cases?
Strabismus should prompt referral to paediatric ophthalmology or orthoptics without delay. Breach occurs when symptomatic children are observed instead of referred, when referrals are delayed despite parental concern, when alignment abnormalities are attributed to normal variation, or when practitioners assume the child will outgrow the condition.
What role does cycloplegic refraction play in strabismus litigation?
Uncorrected refractive error is a significant driver of strabismus, particularly esotropia. Standards of care require cycloplegic refraction for all esotropias, recognition of any accommodative component, and accurate optical correction as first-line management. Failure to perform cycloplegia or misinterpretation of the results is a recurrent breach.
Related insights
For related paediatric analysis, see our commentary on medico-legal pitfalls and standards of care in amblyopia and on refractive error in childhood. You can also read more about our approach to ophthalmology clinical negligence work or browse all Insights.