Glaucoma is a group of eye conditions that damage the optic nerve. The optic nerve sends visual information from your eye to your brain and is vital for good vision. Damage to the optic nerve is often related to high pressure in your eye. However, glaucoma can happen even with normal eye pressure.

Glaucoma can occur at any age but is more common in older adults. It is one of the leading causes of blindness for people over the age of 60.

Many forms of glaucoma have no warning signs. The effect is so gradual that you may not notice a change in vision until the condition is in its later stages.

Symptoms

The symptoms of glaucoma depend on the type and stage of your condition.

Open-angle glaucoma

• No symptoms in early stages

• Gradually, patchy blind spots in your side vision. Side vision also is known as peripheral vision

• In later or advanced stages, difficulty seeing things in your central vision
  
  

Acute angle-closure glaucoma

• Severe headache

• Severe eye pain

• Nausea or vomiting

• Blurred vision

• Halos or colored rings around lights

• Eye redness
  
  

Normal-tension glaucoma

• No symptoms in early stages

• Gradually, blurred vision

• In later stages, loss of side vision
  
  

Glaucoma in children

• A dull or cloudy eye (infants)

• Increased blinking (infants)

• Tears without crying (infants)

• Blurred vision

• Nearsightedness that gets worse

• Headache
  
  

Pigmentary glaucoma

• Halos around lights

• Blurred vision with exercise

• Gradual loss of side vision

​​​​​​​It's important to have regular eye exams that include measurements of your eye pressure. If glaucoma is recognized early, vision loss can be slowed or prevented. If you have glaucoma, you'll need treatment or monitoring long term.