Preretinal and optic nerve head neovascularization induced by photodynamic venous thrombosis in domestic pigs

• Published in: Archives of ophthalmology (1960) Vol. 111; no. 4; p. 539
• Main Authors: Danis, R P, Yang, Y, Massicotte, S J, Boldt, H C
• Format: Journal Article
• Language: English
• Published: United States 01.04.1993
• Subjects: Animals; Disease Models, Animal; Fluorescein Angiography; Follow-Up Studies; Fundus Oculi; Laser Coagulation; Male; Neovascularization, Pathologic - etiology; Neovascularization, Pathologic - pathology; Optic Disk - blood supply; Optic Disk - pathology; Photochemotherapy; Retinal Neovascularization - etiology; Retinal Neovascularization - pathology; Retinal Vein Occlusion - chemically induced; Retinal Vein Occlusion - complications; Retinal Vein Occlusion - surgery; Rose Bengal; Swine
• ISSN: 0003-9950
• DOI: 10.1001/archopht.1993.01090040131047

To develop a reliable model of ischemic preretinal and optic nerve head neovascularization in young male domestic pigs. Using laser-induced branch retinal venous obstruction assisted by photodynamic thrombosis with rose bengal, 15 of 15 treated eyes developed neovascularization of the optic nerve head and retina. All cases of neovascularization were followed up clinically for up to 12 weeks. Clinical, fluorescein angiographic, and histopathologic features were consistent with neovascular proliferation into the vitreous. Further evaluation of the long-term natural history, role of the degree of ischemia, and the effect of interventions for various types of ischemic retinopathy (eg, panretinal photocoagulation) is warranted. This model is simple and relatively inexpensive and allows easy clinical assessment.