BRVO stands for **branch retinal vein occlusion**. It is a condition where a **small vein in the retina becomes blocked**, affecting retinal blood flow. BRVO is commonly discussed in **eye clinics, retinal specialty care, and imaging reports**. It matters because it can cause **blurred or distorted vision**, especially when the macula is involved.

central retinal vein occlusion is a blockage of the main vein that drains blood from the retina. It can cause sudden or gradual vision changes, often in one eye. It is commonly discussed in retina clinics and emergency eye evaluations because it can affect central vision. It is a diagnosis that guides testing, monitoring, and treatment planning for retinal swelling and complications.

CRVO stands for **central retinal vein occlusion**. It is a condition where the main vein draining blood from the retina becomes blocked. CRVO is commonly discussed in retina clinics and emergency eye assessments for sudden vision changes. It is a **diagnosis**, not a procedure or a medication.

retinal vein occlusion is a blockage of a vein that drains blood away from the retina. The retina is the light-sensing tissue lining the back of the eye. This condition can lead to retinal swelling and bleeding that may affect vision. The term is commonly used in eye clinics to describe a cause of sudden or subacute vision changes.

tractional membranes are abnormal sheets of tissue that form on or near the retina and can pull on it. They are most often discussed in vitreoretinal disease, where “traction” means mechanical pulling that can distort retinal shape. Clinicians commonly identify tractional membranes during a dilated eye exam and retinal imaging such as OCT. They matter because traction can affect vision, retinal health, and surgical planning.

vitreous hemorrhage (diabetes) means bleeding into the vitreous, the clear gel that fills the center of the eye. It most often relates to advanced diabetic retinopathy, where fragile new retinal blood vessels can leak or rupture. People commonly describe sudden new floaters, haze, or a “curtain” of blurred vision. The term is used in eye clinics, emergency evaluations, and retina care to describe a cause of acute vision loss in diabetes.

neovascularization elsewhere (NVE) means abnormal new blood vessels growing on the retina away from the optic disc. It is a clinical term used in retinal exams and imaging reports. It most commonly comes up when grading ischemic retinal diseases such as diabetic retinopathy. It matters because these new vessels are fragile and can bleed or scar.

neovascularization of disc (NVD) means abnormal new blood vessels growing on or very near the optic disc (the “nerve head”) inside the eye. It is most commonly discussed as a clinical sign of retinal ischemia, meaning the retina is not getting enough oxygen. Clinicians use the term when examining the back of the eye (fundus) in conditions such as proliferative diabetic retinopathy and some retinal vein occlusions. It is a finding—not a standalone disease—and it helps guide further evaluation and management discussions.

retinal ischemia means reduced blood flow and oxygen delivery to the retina. The retina is the light-sensing tissue lining the back of the eye that supports vision. This term is commonly used in eye exams, imaging reports, and discussions of retinal vascular disease.

diabetic macular edema (DME) is swelling in the macula, the central part of the retina responsible for sharp, detailed vision. It happens when diabetes-related damage causes fluid to leak from retinal blood vessels into macular tissue. It is a common cause of vision changes in people with diabetic retinopathy. The term is used in eye clinics to describe a specific, treatable pattern of retinal thickening and fluid.

proliferative diabetic retinopathy is an advanced stage of diabetic eye disease that affects the retina. It happens when abnormal new blood vessels grow on the retina or optic nerve due to diabetes-related poor blood flow. It is commonly used as a clinical diagnosis in eye exams, retina clinics, and diabetes-related vision screening.

PDR stands for **proliferative diabetic retinopathy**. It is an advanced stage of diabetic eye disease where **abnormal new blood vessels** grow in the retina. PDR is commonly identified during a **dilated eye exam** in ophthalmology and optometry clinics. It matters because these fragile vessels can bleed or scar, which can threaten vision.

nonproliferative diabetic retinopathy is an early-to-intermediate stage of diabetic eye disease that affects the retina. It means diabetes-related damage is present, but new abnormal blood vessels have not started growing. It is commonly used as a clinical diagnosis and staging term in eye exams, retinal imaging reports, and diabetes-related screening programs. It helps clinicians describe severity, guide monitoring, and plan treatment if complications develop.

NPDR stands for nonproliferative diabetic retinopathy. It is an early-to-intermediate stage of diabetic eye disease that affects the retina. NPDR is commonly used by eye clinicians to describe what they see on a dilated retinal exam and imaging. It helps communicate severity and guides monitoring and treatment planning.

diabetic retinopathy is an eye disease caused by diabetes affecting the retina’s blood vessels. In plain terms, it is diabetes-related damage to the light-sensing tissue at the back of the eye. It is commonly discussed in diabetes care, eye clinics, and screening programs focused on preventing vision loss. Clinicians use the term to describe both early, subtle retinal changes and advanced disease with complications.

myopic CNV is short for **myopic choroidal neovascularization**. It describes **abnormal new blood vessel growth** beneath the retina in people with **high myopia (strong nearsightedness)**. It can cause **sudden central vision changes**, such as distortion or a dark spot. The term is commonly used in **retina clinics**, imaging reports (like OCT), and ophthalmology/optometry education.

macular telangiectasia is a retinal condition involving abnormal, dilated small blood vessels near the macula. The macula is the central part of the retina responsible for sharp, detailed vision. The term is most commonly used in eye clinics, imaging reports, and research to describe a specific pattern of macular vascular change. It is typically discussed in the context of diagnosing unexplained central vision symptoms and planning monitoring or treatment.

central serous chorioretinopathy (CSC) is a retinal condition in which fluid collects under the macula. The macula is the central part of the retina responsible for sharp, detailed vision. CSC is commonly discussed in eye clinics as a cause of sudden or gradual central vision distortion. It is also a frequent topic in retinal imaging (such as OCT) and clinical decision-making.

polypoidal choroidal vasculopathy (PCV) is a retinal condition involving abnormal blood vessels beneath the retina. It can cause fluid leakage or bleeding that may blur or distort central vision. It is most commonly discussed in the context of macular disease and can resemble “wet” age-related macular degeneration (AMD). In eye clinics, it is identified with specialized retinal imaging and managed with medical and/or laser-based therapies.

choroidal neovascularization (CNV) is the growth of abnormal new blood vessels beneath the retina. These vessels come from the choroid, a vascular layer that normally nourishes the outer retina. CNV is commonly discussed in retinal disease care, especially macular conditions that affect central vision. It is used as a diagnosis and as a clinical concept to guide imaging, monitoring, and treatment planning.