Glaucoma Risk in Individuals with Myopia - Ophthalmology

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High-risk groups for glaucoma


I have myopia of -5.50 diopters, and when I went to the hospital for an examination, the doctor mentioned that my optic nerves are somewhat asymmetric.
However, after performing an OCT, the doctor said there were no issues.
Does this mean that my risk of developing glaucoma in the future is significantly higher than that of individuals with normal optic nerves?

Kam, 10~19 year old female. Ask Date: 2023/03/28

Dr. Gao Pilin reply Ophthalmology


Hello: Myopia and glaucoma are two different issues; having high myopia does not necessarily mean one will develop glaucoma.
The causes of glaucoma are quite complex and are related not only to intraocular pressure but also to factors such as age, race, and genetics.
You mentioned that the optic nerves are somewhat asymmetrical; it is important to note that optic nerve abnormalities may be associated with glaucoma, but this is not always the case.
Other conditions, such as optic neuritis or optic neuropathy, can also lead to optic nerve abnormalities.
You can regularly check your intraocular pressure to monitor your eye pressure status for early detection of glaucoma.
Additionally, appropriate exercise, a balanced diet, and maintaining good lifestyle habits can help prevent the occurrence of glaucoma.
Regular eye examinations are essential to determine the health of your eyes.
If you have any concerns, please feel free to consult your ophthalmologist.

Reply Date: 2023/03/28

More Info


Understanding the risk of glaucoma in individuals with myopia, especially those with high degrees of myopia like yourself (550 degrees), is an important topic in ophthalmology. Myopia, or nearsightedness, is a common refractive error, but it is also associated with an increased risk of several eye conditions, including glaucoma.

Glaucoma is a group of eye diseases that damage the optic nerve, often due to increased intraocular pressure (IOP). The risk factors for developing glaucoma include age, family history, ethnicity, and certain medical conditions, including myopia. Research indicates that individuals with high myopia are at a higher risk for developing glaucoma compared to those with normal vision. This is partly due to the structural changes in the eye that occur with high myopia, such as elongation of the eyeball, which can lead to changes in the optic nerve and an increased likelihood of elevated IOP.

In your case, you mentioned that your doctor noted asymmetry in your optic nerve but that the OCT (Optical Coherence Tomography) results were normal. While normal OCT findings are reassuring, the asymmetry in the optic nerve could still be a point of concern. Asymmetry can sometimes indicate underlying issues that may predispose you to glaucoma, even if the current tests do not show any immediate problems.
It is essential to understand that while having myopia, especially high myopia, does increase your risk for glaucoma, it does not guarantee that you will develop the condition. Regular eye examinations are crucial for monitoring your eye health. These exams typically include measuring your IOP, assessing the optic nerve, and performing visual field tests to detect any early signs of glaucoma.
To mitigate your risk, consider the following recommendations:
1. Regular Eye Exams: Schedule comprehensive eye exams at least once a year, or more frequently if advised by your eye care professional. This will help in early detection and management of any potential issues.

2. Monitor Symptoms: Be aware of any changes in your vision, such as blurriness, halos around lights, or loss of peripheral vision, and report these to your eye doctor immediately.

3. Healthy Lifestyle: Maintain a healthy lifestyle, including a balanced diet rich in antioxidants, regular exercise, and avoiding smoking, which can contribute to overall eye health.

4. Protect Your Eyes: Wear sunglasses to protect your eyes from UV rays, which can contribute to various eye conditions, including cataracts and possibly glaucoma.

5. Discuss Family History: If you have a family history of glaucoma, make sure to discuss this with your eye doctor, as it can influence your risk and the frequency of monitoring.

In summary, while your myopia and the noted asymmetry in your optic nerve may increase your risk for glaucoma, regular monitoring and proactive management can help mitigate this risk. Always consult with your eye care professional for personalized advice and treatment options tailored to your specific situation.

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