Optic Nerve Decompression Techniques in Traumatic Injury

The management of traumatic optic neuropathy has evolved to include surgical decompression aimed at relieving pressure within the optic canal. Direct injuries result from penetrating fragments, whereas indirect injuries arise from transmitted impact forces. Surgical approaches have progressed from open transcranial and transorbital routes to minimally invasive endoscopic techniques that exploit transethmoidal or transnasal corridors. The primary goal is to decompress the optic canal, restore microvascular perfusion and limit secondary ischaemic injury. Timing of intervention, preoperative visual function and location of canal fracture influence prognosis. High-dose corticosteroids have been widely used as an adjunct, though their benefit remains contested. Recent advances in intraoperative imaging, neuro-navigation and microsurgical optics have improved precision and reduced morbidity. Globally, endoscopic techniques have gained traction due to shorter hospital stays and lower complication rates, particularly in centres with dedicated skull-base teams. Experimental therapies, including erythropoietin and neurotrophic factors, are under investigation to enhance axonal regeneration post-decompression, reflecting a trend towards multimodal management that integrates surgical, pharmacological and rehabilitative strategies.

Research from Nature Portfolio

Recent studies have highlighted the impact of residual light perception on treatment outcomes following traumatic optic neuropathy. A large retrospective series divided patients based on the presence or absence of light perception and demonstrated significantly higher rates of visual acuity recovery among those with preserved light perception. Moreover, surgical decompression appeared more effective than steroid therapy in the light-perception group, emphasising the need for individualised treatment planning. These findings underscore the prognostic value of early visual assessment and support tailored surgical intervention strategies.

Research from all publishers

Recent work has documented the efficacy of transnasal endoscopic optic canal decompression in acute traumatic optic neuropathy, reporting visual improvement in approximately 70% of cases. Key prognostic factors included preoperative light perception and surgical timing within seven days of injury. The minimally invasive approach reduced operative morbidity and facilitated concurrent pharmacological neurotrophic therapy to support neural recovery.

An encyclopaedic review synthesised controversies surrounding high-dose corticosteroid therapy versus surgical decompression, concluding that operative intervention offers benefit only in selected cases and that adjunctive erythropoietin may present a safe and effective therapy. A systematic literature review further underlined the lack of consensus on optimal treatment protocols and highlighted emerging pharmacological agents designed to mitigate secondary axonal damage and enhance functional outcomes.

Optic Nerve Decompression Techniques in Traumatic Injury publication trend

The graph below shows the total number of articles in optic nerve decompression techniques in traumatic injury across all publications each year (not limited to Nature Index journals).

Technical terms

Traumatic Optic Neuropathy (TON): Optic nerve injury caused by blunt or penetrating trauma, classified as direct (penetrating) or indirect (transmitted force).

Optic Canal Decompression: Surgical enlargement or removal of bony constriction around the optic canal to relieve pressure on the optic nerve.

Visual Acuity (VA): A measure of the sharpness or clarity of vision, typically determined using standardised letter charts.

Light Perception: The ability to detect the presence of light without discerning shape or form.

Endoscopic Transnasal Approach: A minimally invasive surgical technique accessing the optic canal via the nasal cavity using an endoscope.

References

1. Traumatic Optic Neuropathy: Update on Management. Encyclopedia (2023).
2. Effects of light perception on visual function recovery in patients with traumatic optic neuropathy. Scientific Reports (2024).
3. Diagnosis and treatment of transnasal endoscopic optic canal decompression for traumatic optic neuropathy. Frontiers in Neuroscience (2023).
4. A Systematic Literature Review on Traumatic Optic Neuropathy. Journal of Ophthalmology (2021).