Glaucoma Explained Early Signs Causes and Long Term Risks

Glaucoma is a serious eye disease.
It slowly damages the optic nerve which connects the eye to the brain and causes irreversible loss of vision. 
Most people do not feel pain or any other visual symptoms until very late in the disease. ​
Because of this, glaucoma is often called the silent thief of sight.
Early detection and treatment are very important to protect vision.

What Is Glaucoma
Glaucoma happens when pressure inside the eye becomes too high.
This pressure damages the optic nerve over time.
Once vision is lost it usually cannot be restored.
Glaucoma can affect one eye or both eyes.

Causes of Glaucoma
Glaucoma can develop for different reasons.
The main cause is obstruction to the outflow pathway at various levels so fluid inside the eye does not drain properly.

• Age
  Risk increases as people grow older.
• Family history
  Glaucoma can run in families.
• Eye injuries
  Past eye injuries can increase risk.
• Eye diseases
  Some eye problems like inflammation can affect eye pressure.
• Long term use of certain medicines
  especially steroid based medicines.

Early Signs of Glaucoma
Early signs are often mild or unnoticed depending on the type of glaucoma. 

• Blurred vision
  
• Difficulty seeing at night
  
• Seeing halos around lights
  
• Mild eye pain or headache
  
• Slow loss of side vision

Because symptoms appear slowly most people do not realize they have glaucoma. 

Types of Glaucoma
There are different types of glaucoma.

• Open angle glaucoma
  This is the most common type is painless and develops slowly.
• Angle closure glaucoma
  This can happen suddenly and needs urgent care.
• Congenital glaucoma
  This is present at birth and affects babies.

How Glaucoma Is Diagnosed
Eye doctors use simple tests to diagnose glaucoma.

• Checking eye pressure
  
• Examining the optic nerve
  
• Testing the field of vision
  
• Measuring the thickness of the cornea
• Imaging the thickness of the retinal nerve fibre layer making up the optic nerve. 

Regular eye exams help detect glaucoma early.

Long Term Risks of Glaucoma
If not treated, glaucoma can cause serious problems.

• Permanent vision loss
  
• Loss of side vision
  
• Difficulty with daily activities
  
• Complete blindness in severe cases

Vision loss from glaucoma cannot be reversed.

Treatment Options for Glaucoma
Glaucoma treatment helps slow or stop damage.

• Eye drops
  These help lower eye pressure.
• Oral medicines
  Used in some cases to control pressure.
• Laser treatment
  Helps improve fluid drainage.
• Surgery
  Used when other treatments do not work.

Treatment is usually lifelong.

Can Glaucoma Be Prevented
Glaucoma cannot always be prevented.
But early detection helps protect vision.

• Get regular eye checkups
  
• Follow treatment plans carefully
  
• Do not skip eye medicines
  
• Inform doctors about family history

When to See an Eye Doctor Immediately
Seek medical help if you notice:

• Sudden vision loss
  
• Severe eye pain
  
• Red eyes with headache
  
• Nausea with eye discomfort
  

These may be signs of angle closure glaucoma.

Frequently Asked Questions

Is glaucoma curable
Glaucoma cannot be cured but it can be controlled.

Can young people get glaucoma
Yes but it is more common in older adults.

Does glaucoma always cause blindness
No early treatment helps protect vision.

Summary
Glaucoma is a serious eye disease that damages vision slowly.
Early signs are easy to miss.
Regular eye exams and early care help reduce long term risks and protect eyesight.