Cerebral Visual Impairment Care Still Lacks a Reliable Pathway from Detection to Support
Children with cerebral visual impairment are increasingly visible in the literature, yet the systems meant to identify and support them remain uneven, fragmented and difficult to navigate. A scoping review in BMJ Open mapped service delivery across detection, management and care for children with CVI, drawing on 108 studies and reports from 14 countries. Nearly half of the included publications appeared in just the last three years, a surge that signals rising awareness rather than resolution of the underlying service problems.
The review set out to identify common elements of CVI service delivery across international settings. It searched 12 electronic databases from inception and added a call for evidence, then focused on English-language studies involving children with CVI, carers or professionals working in OECD countries. The resulting evidence base spans healthcare, education and habilitation settings, which is exactly where the disorder creates the most friction: a child may be seen by eye care teams, neurodevelopmental clinicians, teachers and rehabilitation staff, yet no one pathway reliably connects those encounters into a coordinated diagnostic and support process.
The most consequential finding is structural, not procedural. Definitions and diagnostic criteria remain insufficiently standardised, and this lack of common language continues to delay diagnosis, restrict access to services and complicate referral pathways. In practice, CVI is not failing to be recognized because the condition is rare or obscure; it is being missed because systems do not agree on how to define it, who should screen for it, or how to move a child from suspicion to formal support.
Multidisciplinary Care Is Repeatedly Described, Yet Rarely Seamless
Across the included literature, one message appears with remarkable consistency: children with CVI need a multidisciplinary team approach. Ophthalmology, neurology, developmental services, education and rehabilitation all have a role, but the evidence repeatedly points to weak communication between those sectors. When information transfer fails, the consequences are immediate — diagnostic uncertainty lengthens, families carry the burden of coordinating care, and children lose time in the period when targeted supports could make the greatest difference.
This is a condition shaped by brain-based visual dysfunction, so it cannot be managed as a purely ocular problem. The child may have normal or near-normal ocular structures while still struggling with visual attention, recognition, navigation or visually guided learning. That mismatch between eye findings and functional impairment is one reason CVI demands more than a standard eye examination. It also explains why service models built around isolated specialty visits often fall short: the disorder sits at the intersection of neurology, vision science, development and education.
A brief finding in the review carries outsized practical weight: systems often lack the professional competence needed to identify CVI early and consistently. Without basic familiarity among frontline clinicians and educators, children may cycle through services without a unifying diagnosis. The result is a familiar pattern in developmental medicine — repeated concern, limited clarity and delayed intervention.
Six Stages of Service Delivery Expose Recurrent Weak Points
The included studies were organized across six service delivery stages, allowing the review to track where CVI care most often stalls. Although the abstract does not enumerate every stage in detail, the themes across those stages are clear. Detection depends on recognition of CVI features and referral pathways. Assessment depends on definitions and diagnostic criteria that can be applied in practice. Management depends on coordination among providers. Ongoing care depends on follow-up, communication and service continuity. Education and habilitation depend on translating diagnosis into functional support. Outcome measurement depends on knowing whether any of those interventions actually improve the child’s daily life.
Several system-level deficiencies recur across those stages: weak identification infrastructure, poor transfer of information, inconsistent outcome measurement and incomplete service development. Each problem compounds the next. If professionals do not share a diagnostic framework, children are not consistently recognized. If children are not consistently recognized, they are not routed into services. If they are not routed into services, teams cannot assess whether interventions work.
This is why the review’s emphasis on collaboration matters clinically. CVI care is not just a matter of assembling more specialists around a child; it requires a service architecture that permits those specialists to speak the same clinical language and act on the same plan. Without that architecture, multidisciplinary care becomes a slogan rather than a functioning model.
The Evidence Base Is Growing Faster Than the Infrastructure Behind It
A striking feature of the literature is its recent acceleration. Almost half of the included studies and reports were published between 2023 and 2025, suggesting a field that is expanding quickly. Rising publication volume, however, does not guarantee mature service delivery. In CVI, the pace of scholarship appears to be outstripping the pace of system standardization.
The review also found no cost or health economic studies. That absence leaves policy makers without basic evidence on what CVI services cost, where resources are best allocated, or which models deliver the best value. For a condition that requires cross-sector coordination, the lack of economic evidence is especially limiting. Service redesign usually depends on more than clinical rationale; it also needs a case for staffing, training, referral systems and long-term support. Without cost data, those decisions remain harder to defend and slower to implement.
The review’s conclusions are careful and appropriately restrained. The included studies were not appraised for risk of bias, so confidence in the conclusions of individual reports is limited. Even so, the broad direction of the evidence is difficult to ignore: awareness is increasing, but structural weaknesses still undermine detection, access to care and coordination of support.
What the Review Means for Children, Families and Services
For families, the practical burden of CVI often begins long before a diagnosis is named. Children may struggle in school or daily tasks without receiving a coherent explanation, while carers are left to assemble fragmented advice from multiple services. For clinicians, the review reinforces the need to look beyond ocular anatomy and consider neurodevelopmental visual dysfunction when the history and functional presentation do not match the eye examination.
For service planners, the message is sharper still. CVI systems need clearer definitions, more consistent diagnostic criteria, stronger referral routes, better information transfer and agreed ways to measure outcomes. Training alone will not fix the problem if the surrounding infrastructure remains weak. The review shows that professional awareness, while necessary, is not sufficient.
A service model for CVI cannot depend on chance recognition or individual enthusiasm. It must be built so that children move reliably from suspicion to assessment, from diagnosis to support, and from support to meaningful follow-up. The current literature shows how often that chain breaks, and how much remains to be built before care becomes consistently usable across settings.