Learn about mCNV
Click on the links below to learn more about mCNV
What is myopic choroidal neovascularization (mCNV)?
People with severe nearsightedness or pathologic myopia (PATH‐oh‐lodge‐ICK my‐oh‐PEE‐uh) have a lot of trouble seeing things that are far away. Myopia happens when the eye becomes more oval‐shaped than circular.
mCNV is a serious eye condition that can happen to about 1 in 10 people with severe myopia. In mCNV, abnormal blood vessels may start to grow in the back of the eye because of physical stress.
- mCNV can happen in one or both eyes. About 1 out of 3 people (more than 30%) with mCNV in one eye will develop it in the other eye within 8 years
What are the symptoms of mCNV?
Visual symptoms of mCNV include:
- Loss of vision or reduced vision
- Blurred vision
- Gray, black, or blind spot in the center of the visual field (scotoma)
- Wavy or distorted lines (metamorphopsia)
>> Watch the video below to see how mCNV changes vision over time.
This video is meant to show you a range of symptoms you may
experience. Symptoms can vary depending on the severity level of the
disease and will be unique for each person. If you experience any
problems with vision, contact your Retina Specialist right away.
How does mCNV affect the eyes?
In severe myopia, the eye becomes oval shaped.
- Stress from this condition may damage the retina (the part of your eye that captures light)
In mCNV, stress on the layer between the retina and sclera (white part of the eye) may make unhealthy blood vessels form in the back of the eye.
- These unhealthy blood vessels can cause irreversible vision damage
What are risk factors for mCNV?
Risk factors for mCNV include:
- Having severe myopia (severe nearsightedness)
- Being female (women have a 2x higher risk for mCNV than men)
- Older age (mCNV has been observed to be more common after 40)
Higher rates of mCNV have been observed in people of East Asian descent.
What can happen if mCNV is left untreated?
If you do not have a Retina Specialist, speak to your primary care physician or ophthalmologist about a referral
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