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Is Glaucoma Hereditary?

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An ophthalmologist explains eye diseases using an eye model at an examination table in a hospital examination room.

Glaucoma is a serious eye condition that affects millions of people worldwide, leading to gradual vision loss and, if left untreated, potential blindness. Understanding its causes is crucial for those at risk, particularly when family history plays a role. At Southwood Eyecare, we emphasize the importance of regular eye exams and offer comprehensive glaucoma management to help prevent vision loss.

Yes, glaucoma can be hereditary. If you have a family history of glaucoma, you are at a higher risk of developing the condition. Glaucoma is often passed down through generations, making it important for those with a family history to be vigilant about eye health.

What is Glaucoma?

Glaucoma is a group of eye conditions that damage the optic nerve, usually due to abnormally high pressure in the eye (intraocular pressure). There are different types of glaucoma, including:

  • Primary Open-Angle Glaucoma: The most common type, where the drainage of eye fluid becomes less efficient, increasing eye pressure over time.
  • Angle-Closure Glaucoma: Less common but more sudden, this type occurs when the iris blocks drainage channels in the eye, leading to a rapid increase in eye pressure.
  • Normal-Tension Glaucoma: Eye pressure remains within the normal range, but damage to the optic nerve still occurs, often due to blood flow issues.

Since glaucoma usually progresses slowly, it can go unnoticed for years. By the time symptoms become apparent, significant vision loss may have already occurred. Early detection is key, particularly for those with a genetic predisposition.

Young man visiting his ophthalmologist, doctor working with computer.

How Genetics Influence Glaucoma Risk 

While anyone can develop glaucoma, genetics play a significant role. Research shows that individuals with a family history of glaucoma are up to four to nine times more likely to develop the condition compared to those without a family history. Several genes associated with glaucoma have been identified, though the exact mechanisms are still being studied.

  • Primary Open-Angle Glaucoma: Studies have shown a strong hereditary link in primary open-angle glaucoma. If one of your parents or siblings has this condition, it’s important to undergo regular eye exams, as early detection can help preserve your vision.
  • Angle-Closure Glaucoma: Family history also increases the risk of developing angle-closure glaucoma, particularly in individuals of East Asian or Inuit descent, where this type is more common.
  • Congenital Glaucoma: This is a rare form of glaucoma that can occur in infants and is usually inherited. It is caused by abnormal development of the eye’s drainage system before birth.

Other Risk Factors to Consider

Though heredity is a major factor, it’s not the only one. Several other risk factors can contribute to the development of glaucoma:

  • Age: Glaucoma is more common in individuals over 60.
  • Ethnicity: People of African, Hispanic, or Asian descent have a higher risk of developing glaucoma.
  • Medical Conditions: Diabetes, high blood pressure, and heart disease can increase the risk of glaucoma.
  • Eye Injuries: Trauma to the eye can lead to secondary glaucoma.
  • Corticosteroid Use: Prolonged use of corticosteroids can increase eye pressure, potentially leading to glaucoma.

Even if you don’t have a family history of glaucoma, being aware of these other risk factors is important to maintaining good eye health.

Importance of Early Detection

The silent nature of glaucoma makes regular eye exams critical, especially if you have a family history of the disease. Early detection through comprehensive eye exams, including intraocular pressure measurement and optic nerve evaluation, can prevent or minimize vision loss. At Southwood Eyecare, we offer the latest diagnostic tools and treatment options to help manage glaucoma effectively.

If detected early, glaucoma can often be managed with treatments  that control intraocular pressure, such as:

  • Prescription Eye Drops: These help reduce pressure by either decreasing fluid production or increasing drainage in the eye.
  • Laser Treatment: Laser procedures can help improve drainage in the eye, lowering pressure.
  • Surgery: In some cases, surgery may be required to create new drainage channels or remove blockages.

The right treatment plan depends on the type and severity of glaucoma, as well as the individual’s health. Regular follow-ups are essential for monitoring the progression of the disease.

Steps You Can Take

If you have a family history of glaucoma, there are proactive steps you can take to protect your vision:

  • Schedule Regular Eye Exams: For those with a family history, annual eye exams are recommended. These exams can catch glaucoma early before significant vision loss occurs.
  • Maintain a Healthy Lifestyle: Eating a diet rich in leafy greens and omega-3 fatty acids, exercising regularly, and managing conditions like diabetes and high blood pressure can all support eye health.
  • Monitor Eye Pressure: If you’ve already been diagnosed with glaucoma, working closely with your eye care provider to monitor and manage your eye pressure is crucial to slowing the progression of the disease.

Conclusion: Family History Matters

Glaucoma can indeed be hereditary, making it important to take proactive measures if you have a family history of the disease. Being aware of your genetic risk and scheduling regular eye exams can help protect your vision. At Southwood Eyecare, we are committed to providing personalized care for individuals at risk of glaucoma, confirming that early detection and management are priorities. 

If you or a loved one are concerned about glaucoma, schedule a comprehensive eye exam with us today to safeguard your vision for the future.

Written by Dr. Shmyla Chaudhery

Dr. Shmyla Chaudhery was born and raised in Winnipeg, Manitoba. She obtained a Bachelor of Science degree at the University of Manitoba and later completed the Doctor of Optometry program at Illinois College of Optometry graduating with Magna Cum Laude honours. Dr. Chaudhery is also a member of the Beta Sigma Kappa International Optometric Honor Society and the Tomb and Key Honor Fraternity. She has experience with pediatric eye exams, ocular disease, specialty contact lenses, and vision therapy. During her spare time, she enjoys playing badminton and spending time with her husband and kids.
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