Types of Glaucoma

The most common type of glaucoma is primary open-angle glaucoma. It shows no signs or symptoms except vision loss over time. It’s important to get a periodic comprehensive eye exam so your eye specialist can monitor changes in your vision.

Symptoms of glaucoma are:

  • Eye pain
  • Nausea or vomiting
  • Colored rings around lights
  • Blurred vision
  • Vision disturbances
  • Redness in eyes

Types of glaucoma

Broadly, the various different types of glaucoma are:

  • Primary- occurs due to angle closure and fluid pressure increase inside the eye
  • Secondary- occurs due to other eye conditions, disorders and diseases

Open angle and angle closure are the most common forms of glaucoma found in 70-90% people. Other glaucomas are less common and are found in few people around the world.

Primary Glaucomas

These are ideally the glaucomas which occur due to state of angle of anterior chamber of the eye. Usually fluid pressure in eye damages optic nerves, which leads to these glaucomas. The different types of primary glaucomas are:

Primary Open Angle Glaucoma

It is the most common type of glaucoma. It is an eye disorder in which optic nerve is damaged mostly because of increased fluid pressure inside the eye. The fluid pressure pushes optic nerves causing damage to it.

Angle-closure glaucoma

It is the second most common type of glaucoma found in people. It is one of the largely inherited disorder. It occurs suddenly and cause symptoms such as

  • Eye pain
  • Headache
  • Nausea and vomiting
  • Halos seen around lights in rare cases

This glaucoma occur when fluid from the eye suddenly stops draining due to obstruction of drainage angle of the eye.

Angle closure glaucoma is further classified into two categories:

Acute angle closure glaucoma: It begins suddenly when intraocular pressure of eye increases due to blockage of drainage canal.

Chronic angle closure glaucoma: This happens when the angle or mouth of the drainage canal covers slowly and results in increased intraocular pressure and optic nerve damage.

Childhood glaucoma

It is a rare form of glaucoma often associated with increased eye pressure. This types of glaucoma exists at birth or develop later in an individual. The following symptoms are seen in a child with this glaucoma-

  • Enlarged and cloudy eyes
  • Excessive fluid coming out from eyes
  • Sensitivity of eyes towards light

Childhood glaucoma is further classified into three categories:

  • Congenital
  • Infantile
  • Juvenile