What is retinal vein occlusion?

Retinal vein occlusion (RVO) occurs when blood clot or thrombus blocks the venous outflow from the retina, causing sudden vision loss, floaters, or a dark shadow in the affected eye. The condition may involve the central retinal vein (CRVO, affecting the entire retina) or a branch vessel (BRVO, affecting one sector). Bleeding into the retina (hemorrhage) and fluid accumulation in the macula (edema) follow rapidly, compounding vision loss within hours to days.

Conventional treatment focuses on managing the acute consequences—anti-VEGF injections to reduce macular edema, laser treatment to prevent neovascularization, anticoagulation to limit thrombosis, and blood pressure management. These interventions address hemorrhage and swelling but do not restore venous circulation or resolve the underlying stasis.

Classical Chinese medicine pattern assessment

In classical Chinese herbal medicine, retinal vein occlusion is understood primarily as Blood stasis (瘀血, xuèyū)—the most direct pattern, because the occlusion itself IS the failure of Blood to circulate. The venous blockage represents the culmination of pathogenic factors that have progressively restricted flow.

The root patterns driving this stasis vary by presentation:

Liver Qi stagnation converting to heat and Blood stasis

Many RVO patients present with a history of emotional constraint, prolonged stress, or frustration—classic signs of Liver Qi stagnation (肝气郁结, gānqì yùjié). Over time, sustained Qi stagnation generates internal heat, which dries Blood, making it more viscous and prone to clotting. Heat also inflames the venous walls, further narrowing the vessel. This pattern is especially common in younger patients (under 60) without classical atherosclerotic risk.

Blood stasis from constitutional deficiency

Older patients or those with chronic disease may present with insufficient Blood-moving capacity due to Spleen Yang deficiency, Kidney Yang insufficiency, or constitutional Blood deficiency. Without adequate Qi to propel Blood, it pools and thickens, especially in the delicate retinal circulation.

Xiao Ke (consumption and thirst) in diabetic-associated RVO

Diabetic patients who develop RVO often carry the pattern Xiao Ke (消渴)—a drying, heat-driven condition in which high blood sugar depletes body fluids and thickens Blood. The combination of Yin deficiency, heat, and Blood stasis in Xiao Ke rapidly compromises retinal circulation.

Liver Blood deficiency with internal wind

Some presentations involve sudden vessel rupture with hemorrhage rather than pure thrombotic occlusion. This pattern reflects Liver Blood deficiency (肝血不足) failing to nourish and stabilize the vessels, allowing pathogenic wind to shake them, combined with Heat forcing Blood outward.

Why conventional treatment alone may not restore circulation

Anti-VEGF injections and laser ablation are essential acute interventions—they reduce swelling and prevent blindness from neovascular complications. However, they address the inflammatory consequence of occlusion rather than the circulatory failure itself. Once the acute phase stabilizes, many patients are left with persistent vision loss, residual edema, or recurrent events, because the underlying Qi and Blood stagnation has not been resolved.

Classical herbal medicine targets the stasis directly: moving Blood, clearing heat, restoring Qi flow, and rebuilding the constitutional capacity to sustain circulation. This work proceeds alongside ophthalmologic monitoring and does not replace emergency care.

What herbal treatment looks like

Acute phase (first 2–4 weeks post-occlusion): Herbal formulas are aggressive in moving Blood and clearing heat to address the blockage before permanent vision loss sets in. Herbs like Dan Shen (丹参, Salvia miltiorrhiza), Chi Shao (赤芍, Paeoniae rubra), Tao Ren (桃仁, Persicae semen), and Hong Hua (红花, Carthami flos) are commonly employed to invigorate circulation and break stasis. Heat-clearing herbs such as Huang Qin (黄芩, Scutellariae baicalensis) and Zhi Zi (栀子, Gardeniae fructus) prevent stasis from consolidating into thrombosis.

Stabilization phase (weeks 4–8): As immediate danger of further vision loss recedes, the formula shifts to support macular recovery and prevent hemorrhage recurrence. Herbs that stabilize vessels (Jin Yin Hua, 金银花, Lonicerae flos; Luo Bu Ma Ye, 罗布麻叶, Apocyni veneti folium) are added, alongside gentle Qi movers to restore energy to the area.

Constitutional rebuilding (weeks 8 onward): The formula evolves to address the root pattern—restoring Liver Qi flow if stagnation was primary, tonifying Spleen and Kidney Yang if deficiency was the driver, or nourishing Yin and clearing residual heat in Xiao Ke presentations. This phase can extend over months, supporting the eye’s ability to stabilize vision and resist recurrence.

Formulas are individualized by your specific CCM pattern assessment, current medications, and how your eye and vision respond week to week. Blood pressure, glucose control, and any anticoagulation therapy are monitored in coordination with your ophthalmologist.

For the patient ready to explore herbal support

If you have been diagnosed with central or branch retinal vein occlusion and wish to explore classical herbal formulas as an adjunct to conventional treatment, Rootworth can prepare a custom formula tailored to your CCM pattern and current ophthalmologic status. Herbal support is most effective when begun within the first 4–8 weeks of occlusion, though later-stage support for vision recovery and prevention of recurrence is also valuable.

For patients who prefer in-person evaluation and ongoing acupuncture support alongside herbal medicine, visit Makari Wellness for retinal occlusion treatment, where both modalities are available.

A note on these statements.

Rootworth herbal preparations are dietary supplements. These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease. Classical Chinese medicine pattern assessment is distinct from the diagnosis and treatment of disease as defined under United States federal law. Individual results vary.