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Optic disc neovascularization — Clinical Guidelines

Overview

Optic disc neovascularization (ODN) is a pathological condition characterized by the growth of new blood vessels from the optic disc, often associated with conditions like neovascular glaucoma and ischemic retinopathies, leading to significant visual impairment 3.

Diagnosis

Clinical Presentation: Presence of neovascularization at the optic disc visible on fundus examination 3.

Fluorescein Angiography: Identifies abnormal vascular patterns and leakage 3.

Optical Coherence Tomography (OCT): Assesses retinal thickness and optic disc morphology 3.

Visual Field Testing: Detects visual field defects indicative of optic nerve damage 3.

Management

First-Line Treatment: Anti-VEGF agents are commonly used, with bevacizumab being frequently administered via intravitreal injections 1.

Injection Frequency: Initial high frequency of injections may decrease over time, though sustained delivery methods like AAV2 vectors are emerging 1 2.

Adjunctive Therapies: Photodynamic therapy or laser photocoagulation may be considered in conjunction with anti-VEGF therapy, depending on disease severity and response 6.

Special Populations

Comorbidities: Management strategies may need adjustment in patients with significant comorbidities affecting systemic health, though specific guidelines are lacking 5.

Key Recommendations

Initiate treatment with anti-VEGF agents, particularly bevacizumab, for optic disc neovascularization 1 (Evidence: Strong).

Monitor and adjust injection frequency based on clinical response and disease progression, considering sustained delivery methods as they evolve 1 2 (Evidence: Moderate).

Consider adjunctive therapies such as photodynamic therapy or laser photocoagulation for refractory cases 6 (Evidence: Moderate).

Evaluate the impact of systemic comorbidities on treatment efficacy and adjust management strategies accordingly, though specific evidence is limited 5 (Evidence: Weak).

References

1 Bui MH, Lee DY, Park SJ, Park KH. Real-World Treatment Intensity and Patterns in Patients With Myopic Choroidal Neovascularization: Common Data Model in Ophthalmology. Journal of Korean medical science 2023. link 2 Byrne LC. Anti-VEGF AAV2 injections: The fewer the better. Science translational medicine 2017. link 3 Reynolds AL, Kent D, Kennedy BN. Current and emerging therapies for ocular neovascularisation. Advances in experimental medicine and biology 2014. link 4 Cursiefen C, Colin J, Dana R, Diaz-Llopis M, Faraj LA, Garcia-Delpech S et al.. Consensus statement on indications for anti-angiogenic therapy in the management of corneal diseases associated with neovascularisation: outcome of an expert roundtable. The British journal of ophthalmology 2012. link 5 Miskala PH, Bressler NM, Meinert CL. Is adjustment of National Eye Institute Visual Function Questionnaire scores for general health necessary in randomized trials?. American journal of ophthalmology 2004. link 6 York J, Glaser B, Murphy R. Inhibitors of neovascularization. Journal of ophthalmic nursing & technology 2000. link 7 Verrilli DK, Dunn DL, Rand L. The Resource-Based Relative Value Scale. Methods, results, and impacts for ophthalmology. Archives of ophthalmology (Chicago, Ill. : 1960) 1993. link

Optic disc neovascularization