For solicitors and safeguarding teams, retinal haemorrhages are often the ophthalmic finding that most influences a non-accidental injury (NAI) case, and courts expect experts to recognise the difference between plausible accidental mechanisms and forces more consistent with abusive head trauma. This article is written for medical professionals, expert witnesses, and colleagues in safeguarding. Its purpose is to support accurate, objective assessments that assist the court in its fact-finding function while avoiding advocacy or overinterpretation.
Why retinal haemorrhages carry significant medico-legal weight
Retinal haemorrhages can be caused by a range of mechanisms, but not all mechanisms produce the same pattern, distribution, or severity. Ophthalmic experts are often asked to comment because the retina can record the magnitude and direction of force, certain haemorrhage patterns have high specificity for abusive head trauma, resolution can occur within days making early assessment crucial, and the court relies on the ophthalmologist to help distinguish accidental from non-accidental causes. Medical experts must approach these cases with neutrality, clarity, and careful attention to evidence.
Recognising patterns: what experts must assess
When evaluating retinal haemorrhages, the expert should document and interpret the layers involved (pre-retinal, intra-retinal, sub-retinal), the extent (posterior pole only or extending to the ora serrata), the number (few, moderate, or too numerous to count), symmetry or asymmetry, associated retinal findings such as retinoschisis or perimacular folds, the presence of optic nerve sheath haemorrhage, and any other ocular or periocular injuries. These features help distinguish between high-force mechanisms and low-energy events.
Alternative causes: what must be considered
A balanced expert opinion requires active consideration of alternative explanations. These may include birth-related trauma (typically limited in extent and resolving quickly), accidental short falls (usually producing few, localised haemorrhages), severe coagulopathy, raised intracranial pressure, severe infection, and CPR (which rarely produces extensive retinal haemorrhages). Experts should be clear about whether these explanations can account for the observed pattern.
When the clinical story does not match the science
One of the most important questions for medical experts and the court is whether the reported mechanism can plausibly account for the findings. Expert witnesses should consider the force required to produce the pattern, the biomechanical likelihood of the explanation provided, whether the injuries are consistent with the developmental abilities of the child, and whether additional ocular or systemic injuries support or contradict the account. When discrepancies exist, the expert must explain their reasoning without making factual determinations, which remain for the court.
The role of timely examination
Retinal haemorrhages may resolve within days. Delays in assessment can lead to incomplete documentation, lost opportunities to differentiate between patterns, uncertainty in timing, and an increased risk of contested evidence. Medical professionals and expert witnesses should emphasise the importance of early ophthalmic review in all suspected NAI cases.
Safeguarding responsibilities for clinical teams
All clinical professionals involved in paediatric care should document injuries thoroughly, refer promptly when NAI is suspected, ensure photographs and imaging are completed where feasible, communicate clearly with safeguarding teams, and understand local and national escalation pathways. Ophthalmic findings rarely stand alone. They form part of a wider multidisciplinary assessment.
Expert witness responsibilities in NAI cases
Expert witnesses must remain impartial and avoid advocacy, explain the range of possible causes, clarify which findings are more or less consistent with each mechanism, ensure conclusions are probability based, reference accepted scientific evidence, identify limitations in the available data, and avoid overstatement. The expert's overriding duty is to the court, not the instructing party.
What the court typically needs to know
The court relies on ophthalmic expert evidence to answer whether the described mechanism could reasonably produce these injuries, whether the findings are more consistent with high-force or low-force trauma, whether there is evidence of repetitive or differing mechanisms, whether there are medical conditions that may mimic abusive head trauma, the significance of the distribution and severity of retinal haemorrhages, and whether the temporal evolution of findings supports a particular timeline. Experts must present this information in clear, structured, and neutral language.
The importance of multidisciplinary collaboration
In NAI cases, ophthalmic evidence forms only one part of the picture. Collaboration with paediatrics, neurology, radiology, haematology, forensic teams, and safeguarding specialists is essential for accurate interpretation and robust medico-legal conclusions.
Conclusion
Retinal haemorrhages in infants and young children carry significant medico-legal implications. For medical professionals and expert witnesses, understanding the patterns, differentials, biomechanics, and clinical context is essential to providing balanced, court-compliant evidence. The expert's role is not to determine guilt but to provide clear, objective ophthalmic insight that supports the court in reaching an informed conclusion. Our child protection and criminal expertise is available to solicitors and local authorities instructing on these cases.
Frequently asked questions
Why do retinal haemorrhages carry significant weight in NAI cases?
The retina can record the magnitude and direction of force, certain haemorrhage patterns have high specificity for abusive head trauma, and findings can resolve within days, making early assessment crucial. The court relies on the ophthalmologist to help distinguish accidental from non-accidental causes, with neutrality and careful attention to evidence.
What alternative causes of retinal haemorrhage must experts consider?
A balanced opinion actively considers birth-related trauma, accidental short falls, severe coagulopathy, raised intracranial pressure, severe infection, and CPR. The expert should be clear about whether any of these can account for the observed pattern, extent, and distribution.
What is the expert witness's duty in NAI cases?
Experts must remain impartial and avoid advocacy, explain the range of possible causes, clarify which findings are more or less consistent with each mechanism, ensure conclusions are probability based, reference accepted scientific evidence, identify limitations in the data, and avoid overstatement. The overriding duty is to the court, not the instructing party.
Related insights
For related reading, see our commentary on when the story and the science do not match and why retinal findings matter. To discuss instructing on a safeguarding case, contact us via our enquiry page.