Understanding Choroidal Neovascularization
Choroidal neovascularization, or CNV, is the abnormal growth of fragile blood vessels in the choroid—a vital, blood-rich layer located between the sclera and the retina. This condition can lead to the leakage of fluids and blood, which may damage the retina and ultimately result in vision loss. Understanding CNV is important because early detection and care can help maintain your vision and quality of life. Associated Eye Physicians & Surgeons of NJ proudly offers eye care at four convenient locations: Belleville serving Essex County, Rahway serving Middlesex and Union Counties, Jersey City serving Hudson County, and Union serving Union County.
What is Choroidal Neovascularization?
As of 2025, an estimated 58,000 adults in the United States are affected by myopic choroidal neovascularization (CNV), based on a prevalence rate of 0.017% and current national population data.
Choroidal neovascularization (CNV) is a condition where abnormal new blood vessels grow from the choroid, the vascular layer beneath the retina responsible for delivering oxygen and nutrients to its outer layers. In a healthy eye, this process is tightly regulated. However, when that balance is disrupted, these new vessels form inappropriately.
These abnormal vessels are fragile and prone to leaking fluid or blood, which can disrupt the delicate structure of the retina. This leakage can damage photoreceptor cells—the rods and cones responsible for capturing light—leading to blurred vision, distortion, and other visual disturbances.
When Should You Seek Help?
f you experience any sudden or unusual changes in your vision, it’s important to seek medical attention right away. Signs to watch for include:
- Blurry or distorted central vision
- Straight lines appearing wavy (known as metamorphopsia)
- Dark or gray patches in your central visual field
- Decreased contrast or difficulty recognizing faces
- Visual disturbances in one or both eyes, especially if they seem to worsen rapidly
These symptoms may signal the onset or progression of choroidal neovascularization (CNV). Because CNV often develops silently and painlessly, many people delay seeking care—sometimes until irreversible damage has already
Diagnostic Tools for CNV
Treatment Options for CNV
It’s important to note that the choice of treatment depends on factors such as the location and type of choroidal neovascular membrane, as well as the overall condition of the eye. Our retina specialists are thorough in determining the best course of action for each patient.
Understanding the Underlying Causes of CNV
Associated Eye Conditions
and Risk Factors
CNV is most notably associated with wet age-related macular degeneration (AMD), the more severe form of macular degeneration. While dry AMD is more common and tends to progress slowly, about one in ten people with dry AMD eventually develop CNV, leading to wet AMD. Wet AMD is characterized by its rapid onset and significant vision loss due to the leakage of fluid and blood.
Aside from AMD, CNV can also develop from a variety of other conditions that compromise the integrity of the eye’s protective layers:
Preventative Measures and Lifestyle Considerations
While not every case of CNV can be prevented, there are lifestyle changes that can help reduce the risk of developing this challenging condition. Our retina specialists suggest that certain habits might lower the risk, especially for individuals predisposed to conditions like AMD:
Your Trusted Retina Specialists Serving Central and Northern NJ
At Associated Eye Physicians & Surgeons of New Jersey, we understand the complexities of choroidal neovascularization and its implications for your vision. Early detection and proactive care are essential to preserving your eyesight, and our dedicated eye doctors are here to help. With the latest diagnostic tools and treatment options, we aim to provide personalized care that meets your individual needs. Trust Associated Eye Physicians & Surgeons of New Jersey to be your partner in maintaining your vision health. Experience personalized, expert eye care by scheduling an appointment with our eye doctors in Belleville, Jersey City, Rahway, or Union, NJ.
At Associated Eye Physicians & Surgeons of New Jersey, we proudly serve Northern and Central New Jersey through four convenient locations. Our Belleville office cares for patients in Essex County, including Newark, Bloomfield, and Nutley. The Rahway location serves Middlesex and Union Counties, including Elizabeth, Avenel, Woodbridge, and Perth Amboy. In Union, we see patients from Union County, including Elizabeth and Cranford. And our Jersey City office welcomes Hudson County residents from Hoboken, Bayonne, and beyond.