Optical coherence tomography in optic neuritis and multiple sclerosis: a review.

Area of Science:

• Ophthalmology
• Neurology
• Medical Imaging

Background:

• Optic neuritis (ON) and multiple sclerosis (MS) are demyelinating diseases affecting the optic nerve.
• Retinal nerve fiber layer (RNFL) thickness is a key indicator of optic nerve health.
• Noninvasive imaging techniques are crucial for monitoring disease progression and atrophy.

Purpose of the Study:

• To review the application of Optical Coherence Tomography (OCT) in assessing RNFL thickness in patients with ON and MS.
• To summarize findings on RNFL thickness variations in affected eyes, fellow eyes, and healthy controls.
• To explore correlations between RNFL thickness and various clinical and electrophysiological measures.

Main Methods:

• A literature survey of studies using OCT to measure RNFL thickness in ON and MS was conducted via PubMed.
• RNFL thickness values from affected eyes, fellow eyes, and healthy controls were compiled and compared.
• Correlations between RNFL thickness and visual function, MRI findings, and visual evoked potentials were analyzed.

Main Results:

• Significant RNFL reduction was observed in eyes affected by ON compared to fellow eyes and healthy controls.
• Fellow eyes also showed a significant reduction in RNFL thickness compared to control eyes in most studies.
• RNFL thickness correlated with visual acuity, visual field, contrast sensitivity, color vision, optic nerve area, and disease duration.

Conclusions:

• OCT is a valuable, noninvasive tool for quantifying RNFL atrophy in patients with ON and MS.
• OCT measurements provide objective data that correlate with functional and structural changes in these conditions.
• This technology shows promise for monitoring disease progression and treatment efficacy in optic neuritis and multiple sclerosis.