Retinal Damage and Visual Network Reconfiguration Defines Visual Function Recovery in Optic Neuritis.

Area of Science:

• Neuroscience
• Ophthalmology
• Medical Imaging

Background:

• Acute optic neuritis (AON) significantly impacts vision and quality of life in demyelinating diseases.
• Understanding predictors of permanent visual disability is essential for managing AON.

Purpose of the Study:

• To prospectively evaluate changes in visual acuity, retinal thickness, and cortical visual networks in AON patients.
• To identify early indicators of permanent vision loss following AON.

Main Methods:

• A prospective cohort of 88 AON patients was followed for 6 months.
• Assessments included low-contrast visual acuity, optical coherence tomography (OCT) for retinal thickness, and structural/functional brain MRI for cortical visual network analysis.

Main Results:

• Moderate impairment in low-contrast vision persisted at 6 months post-AON.
• Baseline retinal ganglion cell layer thickness predicted 6-month low-contrast vision.
• Both structural and functional cortical visual network characteristics at baseline predicted low-contrast vision outcomes.

Conclusions:

• Early assessment of the visual pathway in AON is predictive of long-term vision disability.
• Damage occurs early in AON, making baseline assessments valuable for defining impairment and guiding treatment.