Factors Associated With Lack of Vision Improvement in Children With Cortical Visual Impairment

Area of Science:

• Pediatric Ophthalmology
• Neuroscience
• Developmental Pediatrics

Background:

• Cortical visual impairment (CVI) is a significant cause of vision loss in children, stemming from various brain injuries.
• While some children with CVI experience vision improvement, identifying risk factors for poor recovery is crucial for targeted interventions.

Purpose of the Study:

• To investigate the risk factors associated with limited vision recovery in pediatric patients diagnosed with CVI.
• To analyze the relationship between age at presentation, etiology of CVI, and visual acuity (VA) outcomes.

Main Methods:

• Retrospective review of medical records for children diagnosed with CVI before 2010 with at least four follow-up visits.
• Assessment of visual acuity (VA) using a 6-grade qualitative scale, with improvement calculated as a ratio of actual to potential change.
• Multiple linear regression analysis to identify factors associated with lack of VA improvement, stratified by etiology.

Main Results:

• The study included 53 children with CVI, with a median age of 13.6 months at presentation and a median follow-up of 5.8 years.
• Vision improvement was observed in 83% of children; however, older age at presentation was significantly associated with poorer VA improvement across all etiologies.
• Etiologies included CNS malformation, hypoxic/inflammatory injury, seizures, and combined causes, with no significant association found between specific etiology and poor vision recovery.

Conclusions:

• The majority of children with CVI demonstrate some degree of vision improvement.
• Older age at the time of initial presentation, rather than the underlying cause of CVI, emerged as a key predictor of suboptimal visual recovery.