NEOVASCULAR SECONDARY GLAUCOMA, ETIOLOGY AND PATHOGENESIS

Area of Science:

• Ophthalmology
• Vascular Biology
• Glaucoma Research

Background:

• Neovascular secondary glaucoma (NSG) results from abnormal blood vessel growth (neovascularization) in the iris and iridocorneal angle.
• It is a severe complication of end-stage ischemic retina, leading to elevated intraocular pressure.
• Prompt diagnosis and treatment are essential due to a guarded visual prognosis.

Purpose of the Study:

• To elucidate the etiology and pathogenesis of neovascular secondary glaucoma.
• To understand the role of angiogenesis in the development of NSG.

Main Methods:

• Literature review focused on the angiogenesis theory.
• Analysis of studies investigating proangiogenic factors in NSG pathogenesis.

Main Results:

• Vascular Endothelial Growth Factor (VEGF) is a key proangiogenic factor in NSG.
• Elevated VEGF and VEGF-mRNA levels are observed in ischemic retinas.
• Conditions like diabetic retinopathy, central retinal vein thrombosis, and retinal detachments are common causes of NSG via retinal ischemia.

Conclusions:

• Accurate evaluation of iris neovascularization and appropriate treatment are paramount in managing NSG.
• Regular gonioscopy is recommended for individuals at high risk of developing NSG.
• Close monitoring of patients with high thromboembolic risk factors is advised.