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Axonal loss after traumatic optic neuropathy documented by optical coherence tomography
Felipe A Medeiros1, Frederico C Moura, Roberto M Vessani
1Glaucoma Service, Department of Ophthalmology, University of São Paulo, São Paulo, Brazil. fmedeiros@uol.com.br
American Journal of Ophthalmology
|March 5, 2003
Summary
Optical coherence tomography (OCT) monitoring revealed progressive retinal nerve fiber layer (RNFL) thinning in a patient with traumatic optic neuropathy, confirming OCT
Area of Science:
- Ophthalmology
- Neuroscience
- Medical Imaging
Background:
- Traumatic optic neuropathy (TON) can lead to significant vision loss.
- Accurate monitoring of axonal damage is crucial for managing TON.
- Optical coherence tomography (OCT) is a non-invasive imaging technique.
Observation:
- A 14-year-old male with severe optic nerve trauma underwent serial OCT scans.
- Peripapillary retinal nerve fiber layer (RNFL) thickness was measured at multiple time points post-injury (3, 20, 40, 70 days).
Findings:
- Longitudinal OCT analysis demonstrated a gradual loss of nerve fibers.
- Color-coded maps and RNFL thickness profiles showed progressive thinning around the optic disc.
- Severe RNFL thinning was evident by 70 days post-trauma.
Implications:
- OCT is a valuable tool for assessing and monitoring axonal loss in traumatic optic neuropathy.
- Serial OCT measurements can track disease progression and inform treatment strategies.
- This case highlights OCT's utility in evaluating optic nerve damage severity and longitudinal changes.