Understanding Glaucoma and Its Impact on Vision

Glaucoma is a serious eye condition that damages the optic nerve, often due to elevated pressure within the eye. It’s a leading cause of irreversible blindness worldwide, affecting millions of people, particularly those over 60 years old. What makes glaucoma particularly insidious is its gradual onset and painless progression, often leading to significant vision loss before individuals notice any symptoms.

Person using an autorefractor machine for an eye exam.

Photo by Ksenia Chernaya

Types of Glaucoma

There are several types of glaucoma, but the two main categories are:

  • Primary Open-Angle Glaucoma: This is the most common type, where the drainage angle of the eye becomes less efficient over time, leading to increased eye pressure.
  • Angle-Closure Glaucoma: This occurs when the iris bulges forward and blocks the drainage angle of the eye, causing a sudden increase in eye pressure.

Symptoms and Detection

Early stages of glaucoma usually have no symptoms, which is why regular eye exams are crucial. As the condition progresses, individuals may experience gradual loss of peripheral vision, and in advanced stages, tunnel vision. In cases of acute angle-closure glaucoma, symptoms may include severe eye pain or headache.

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Photo by Вадим Биць

Risk Factors

Several factors increase the risk of developing glaucoma:

  • Age: The risk increases with age, especially after 60 years.
  • Family history: Having a close relative with glaucoma increases your risk.
  • Medical conditions: High blood pressure, heart disease, and diabetes can contribute.
  • Ethnicity: People of African or Hispanic descent are at higher risk.
  • Eye conditions: Previous eye injuries or surgeries can increase the risk.

Prevention and Treatment

While there’s no cure for glaucoma, early detection and treatment can help slow its progression and prevent vision loss. Dilated eye exams and visual field testing are essential for early detection, and it’s important to inform your eye doctor if you have a family history of glaucoma.

  • Eye drops: To reduce intraocular pressure.
  • Oral medications: To lower eye pressure when drops aren’t sufficient.
  • Laser therapy: To improve drainage of fluid from the eye.
  • Surgery: For severe cases where other treatments aren’t effective.

Managing Glaucoma

Managing glaucoma requires ongoing care and vigilance. Patients are advised to follow their prescribed treatment plan and follow-up as directed. It is also important to monitor for any changes in vision and report them promptly to an eye doctor.

Ophthalmologist adjusting a phoropter for an eye examination on a patient.

Photo by Ksenia Chernaya

Glaucoma can pose a significant threat to vision, but with early detection and proper treatment, its impact can be minimized. By raising awareness and promoting regular eye exams, we can work towards reducing vision loss from this disease. Take charge of your eye health today to protect your vision for tomorrow.

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Ivan Yong

Dr. Ivan Yong is an optometrist with over a decade of experience in the optical industry. He earned his doctorate from the Southern California College of Optometry and has practiced in multiple settings, including private practice, community health, and ophthalmology. Dr. Yong aims to expand access to affordable eyewear and improve eye health worldwide.