Glaucoma Specialist

Mission Viejo Optometric Center

Optometrists located in Mission Viejo, CA

Glaucoma is the leading cause of blindness in the world, and everyone is at risk for potentially developing glaucoma, according to the Glaucoma Research Foundation. At Mission Viejo Optometric Center in Mission Viejo, California, Dr. Tanya Lau, OD, provides comprehensive glaucoma evaluations and has extensive experience treating glaucoma, helping men and women in Orange County improve eye health and enhance vision. If you haven’t had a glaucoma evaluation recently, call or use online booking to schedule an appointment today.

Glaucoma Q&A

What is glaucoma?

Glaucoma is a group of related eye conditions that are usually caused by a collection of fluid in the front of your eye. The fluid buildup leads to high pressure or elevated intraocular pressure in your eye that may cause damage to your optic nerve.

Your optic nerve is comprised of around 1 million nerve fibers that communicate signals from your eye to your brain. Some of these nerve fibers may be lost due to consistent pressure from glaucoma. At this point, vision loss and progressive deterioration occur, and some vision loss can be irreversible.

There are different types of glaucoma. The most common type is open-angle glaucoma, where the optic nerve damage happens gradually and painlessly.

Glaucoma is a disease that occurs over time. Keeping up-to-date with your regular eye exams allows Dr. Lau to detect any possible signs of glaucoma before it progresses.

How is glaucoma diagnosed?

During your comprehensive eye exam, Dr. Lau checks for glaucoma using certain tests such as:


A tonometry test involves an instrument called a tonometer that Dr. Lau uses to measure any pressure in your eyeball, a key indication of glaucoma.

Side vision

A side vision test is also known as a visual field test, where Dr. Lau measures your peripheral and central vision. An early sign of glaucoma is a decline in peripheral vision.

Visual acuity

During the visual acuity test, you read a standardized eye chart that allows Dr. Lau to determine your scope of vision at varying distances.

Dilated eye exam

Dr. Lau may use dilating eye drops to dilate your pupils and evaluate the back of your eyes to identify any signs of retina or optic nerve damage.


A corneal pachymetry test entails the use of a pachymeter, a medical device Dr. Lau uses to measure the thickness of your cornea, the transparent layer that forms the front of your eyes.

Who is risk for glaucoma?

While anyone may develop glaucoma, people with thinner corneas are more at risk. Other groups at increased risk for developing glaucoma include:

  • African-Americans over age 40
  • All adults over age 60
  • People with a family history of glaucoma
  • People who’ve had a significant eye injury
  • Diabetics

Treatments for glaucoma include medication or surgery that regulate the pressure on your eye and slow down the progression of the disease.

If you’re due for a glaucoma evaluation, call Mission Viejo Optometric Center in Orange County or use online booking to schedule to an appointment today.