Choroidal Nevus
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What it is: A choroidal nevus is a benign pigmented spot on the choroid (the vascular layer beneath the retina). It’s similar to a freckle or mole but inside the eye. Most choroidal nevi are harmless and many people have them without symptoms.
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Who it affects: Choroidal nevi can be found in people of all ages but are more often discovered during routine eye exams in adults. They are generally incidental findings.
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Symptoms: Most people do not notice any change in vision from a choroidal nevus. Rarely, if the lesion is large or affects the overlying retina, there may be subtle visual changes or distortion.​
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Treatments: No treatment is needed for most nevi. The key is regular monitoring with dilated exams and imaging (such as OCT) to watch for any changes in size, thickness, or features that might raise concern. Very rarely, a nevus may transform into a melanoma (a type of cancer), which is why careful tracking is important.​
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Warning signs: Seek prompt evaluation if you notice new visual symptoms such as distortion, sudden floaters, or a dark spot. Also let us know if a previously stable nevus shows unusual growth or associated retinal changes.
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Early diagnosis and treatment can improve your long-term visual outcome. Contact us today for a consultation.
Frequently Asked Questions
Q: Is a choroidal nevus cancer?
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No, a choroidal nevus is not cancer. However, in rare cases, a nevus can change over time and develop features concerning for transformation into a melanoma. This is why regular monitoring by a retina specialist is important.
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Q: Is a choroidal nevus common?
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Yes. Choroidal nevi are relatively common and are often discovered incidentally during routine eye exams. Many people live their entire lives with a choroidal nevus without any complications.
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Q: Does a choroidal nevus cause symptoms?
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Most people with a choroidal nevus have no symptoms and are unaware of it until it is found during a dilated eye exam. Rarely, a nevus may cause blurred or distorted vision if it affects the overlying retina.
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Q: How is a choroidal nevus diagnosed?
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A choroidal nevus is diagnosed during a dilated retinal examination. Imaging tests such as retinal photography, optical coherence tomography (OCT), or ultrasound may be used to document its size and features and to monitor for changes over time.
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Q: How often should a choroidal nevus be monitored?
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Monitoring frequency depends on the size and appearance of the nevus. Many patients are followed annually, while higher-risk lesions may require more frequent visits. Your retina specialist will tailor a monitoring plan based on your individual findings.​
