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

Publications // Ronald Danis // Apr 01 1993

PubMed ID: 7682408

Author(s): Danis RP, Yang Y, Massicotte SJ, Boldt HC. Preretinal and optic nerve head neovascularization induced by photodynamic venous thrombosis in domestic pigs. Arch Ophthalmol. 1993 Apr;111(4):539-43.

Journal: Archives Of Ophthalmology (Chicago, Ill. : 1960), Volume 111, Issue 4, Apr 1993

OBJECTIVE To develop a reliable model of ischemic preretinal and optic nerve head neovascularization in young male domestic pigs.

METHODS 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.

RESULTS Clinical, fluorescein angiographic, and histopathologic features were consistent with neovascular proliferation into the vitreous.

CONCLUSIONS 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.