Intra-arterial Thrombolysis for Severe Recent Central Retinal Vein Occlusion

Weill Cornell Medicine (WCM)

Status and phase

Completed

Phase 1

Conditions

Central Retinal Vein Occlusion

Treatments

Drug: Tissue Plasminogen Activator

Study type

Interventional

Funder types

Other

Identifiers

NCT01581411

CRVO-IAT1

Details and patient eligibility

About

Central retinal vein occlusion (CRVO) is a common cause of vision loss, typically affecting individuals during the fifth through seventh decade of life. Eyes with severe CRVO have a poor visual prognosis because current treatments address only secondary complications of CRVO without treating its cause. Intra-ophthalmic artery injection of a small dose of t-PA (clot busting medicine), also called intra-ophthalmic artery thrombolysis, may reopen the central retinal vein-and address the cause of the disease- without exposing the subject to the risks of systemic thrombolysis. Our project aims to evaluate the safety and efficacy of intra-ophthalmic artery thrombolysis in subjects with CRVO.

Full description

Study hypothesis: Injection of t-PA, a thrombolytic drug (clot busting medicine)into the ophthalmic artery (the blood vessel feeding the eye), in patients with recent severe central retinal vein occlusion, may reopen the central retinal vein and improve retinal blood flow, which may in turn improve visual acuity and prevent the long-term complications of the disease.
Experimental intervention: An outpatient procedure during which the ophthalmic artery is selective catheterized (with a small plastic tube called a microcatheter introduced from the artery of the leg) and infused with t-PA during two hours.

Enrollment

1 patient

Sex

All

Ages

18 to 90 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Severe CRVO diagnosed on
- presence of relative afferent papillary defect (RAPD)
- or visual acuity of 20/200 or worse
Symptom onset within 2 weeks
Age > 18 years old
Patient is able and willing to give informed consent

Exclusion criteria

Futile intervention: no light perception, absence of perfusion on fluorescein angiography.
Contra-indication to thrombolysis: active or recent (1 month) internal bleeding, cerebrovascular accident, major organ surgery, major trauma; intracranial neoplasm or vascular malformation, known bleeding diathesis, severe uncontrolled arterial hypertension, pregnancy (women of childbearing age must have a negative serum pregnancy test), or any other condition which in the opinion of the investigators would preclude the use of thrombolytic agents.
High-risk catheterization: history of stroke or TIA; carotid bruit or known carotid occlusive disease; any cardiovascular condition that in the opinion of the investigators may increase the risk of catheterization of the ophthalmic artery.
Ocular criteria: Intraocular neovascularization (secondary to any etiology), vitreous hemorrhage, inflammatory eye disease, any condition that precludes fundus photography or fluorescein angiography.