Narrow Angle Glaucoma

Narrow-angle glaucoma is much rarer and is very different from open-angle glaucoma in that eye pressure usually goes up very fast. This happens when the drainage canals get blocked or covered over. The iris gets pushed against the lens of the eye, shutting off the drainage angle. Sometimes the lens and the iris stick to each other. This results in pressure increasing suddenly, usually in one eye. There may be a feeling of fullness in the eye along with reddening, swelling, and blurred vision.

Symptoms of narrow-angle glaucoma:

The onset of acute narrow-angle glaucoma is typically rapid, constituting an emergency. If not treated promptly, this glaucoma produces blindness in the affected eye in three to five days. Symptoms may include:

  • Inflammation and pain
  • Pressure over the eye
  • Moderate pupil dilation that's non-reactive to light
  • Cloudy cornea
  • Blurring and decreased visual acuity
  • Extreme sensitivity to light
  • Seeing halos around lights
  • Nausea and/or vomiting

Causes of narrow-angle glaucoma:

  • Defect in the eye structure
  • Anything that causes the pupil to dilate -- dim lighting, dilation drops
  • Certain oral or injected medications
  • Blow to the eye
  • Diabetes-related growth of abnormal blood vessels over the angle

Diagnosing narrow-angle glaucoma:

Everyone should be checked for glaucoma at around age 35 and again at age 40. Those considered to be at higher risk for narrow-angle glaucoma, including those who are Asian, farsighted or over the age of 60, should have their pressure checked every year or two.

Because of the rapid, potentially devastating results of narrow-angle glaucoma, you should seek medical treatment immediately if you experience any of the above symptoms.

During eye exams, your doctor will use tonometry to check your eye pressure. After applying numbing drops, the tonometer is gently pressed against the eye and its resistance is measured and recorded.

An ophthalmoscope can be used to examine the shape and color of your optic nerve. The ophthalmoscope magnifies and lights up the inside of the eye. If the optic nerve appears to be cupped or is not a healthy pink color, additional tests will be run.

Gonioscopy is used to determine whether the angle where the iris meets the cornea is open or closed, a key difference between open-angle glaucoma and narrow-angle glaucoma.

Treatment for narrow-angle glaucoma:

Laser iridotomy is a common treatment for narrow-angle glaucoma. During this procedure, a laser is used to create a small hole in the iris, restoring the flow of fluid to the front of the eye. In most patients, the iridotomy is placed in the upper portion of the iris, under the upper eyelid, where it cannot be seen.




Laser iridotomy

Filtration surgery is performed when medicines and/or laser surgery are unsuccessful in controlling eye pressure. During this microscopic procedure, a new drainage channel is created to allow fluid to drain from the eye.


Filtration surgery

Mid-Peninsula Ophthalmology Medical Group

Ophthalmologists located in Menlo Park, CA

Mid-Peninsula Ophthalmology Medical Group, located in Menlo Park, CA, was founded in Palo Alto in 1960 and has established a legacy of superior comprehensive and specialty eye care in the peninsula over the past 55 years.

The true difference in our practice is our commitment to you, the patient. We make it our mission to take our time with you to discuss your concerns, and we use state of the art diagnostic and therapeutic technologies to take care of all of your eye issues.  We pride ourselves on being easily accessible, having very limited wait times, personally contacting you with your medical information, and being personally involved in all aspects of your exam and care. We value your time and the way our practice runs demonstrates that. 

We are committed to excellence, and our doctors provide the highest quality of care with a personalized approach that will best serve the individual needs of each patient. Our goal is to create a partnership with you, to ensure that you make informed decisions regarding your vision. Our physicians are board-certified ophthalmologists, members of the American Academy of Ophthalmology, and faculty members at Stanford University.

We want our office to be your one-stop destination for all of your eye care needs. Our physicians are trained in the most advanced techniques in eye exams, glaucoma evaluation, diabetic eye care, cataract surgery, vision correction surgery, eyelid surgery, and cosmetic facial rejuvenation. We also offer an array of glasses and contact lenses and operate a complete optical dispensary for your convenience.  Finally, we have a brand new in-office procedure room for your convenience. 

From treating vision disorders in all age groups to diagnosing ocular diseases or performing sophisticated eye surgery, MPOMG has a team of trusted specialists who make sure that you and your family receive the best eye care on the Peninsula.

Please contact our friendly staff to make an appointment or obtain information regarding our services.

Read more
Mid-Peninsula Ophthalmology Medical Group

Mid-Peninsula Ophthalmology Medical Group, located in Menlo Park, CA, was founded in Palo Alto in 1960 and has established a legacy of superior comprehensive and specialty eye care in the peninsula over the past 55 years.

The true difference in our practice is our commitment to you, the patient. We make it our mission to take our time with you to discuss your concerns, and we use state of the art diagnostic and therapeutic technologies to take care of all of your eye issues.  We pride ourselves on being easily accessible, having very limited wait times, personally contacting you with your medical information, and being personally involved in all aspects of your exam and care. We value your time and the way our practice runs demonstrates that. 

We are committed to excellence, and our doctors provide the highest quality of care with a personalized approach that will best serve the individual needs of each patient. Our goal is to create a partnership with you, to ensure that you make informed decisions regarding your vision. Our physicians are board-certified ophthalmologists, members of the American Academy of Ophthalmology, and faculty members at Stanford University.

We want our office to be your one-stop destination for all of your eye care needs. Our physicians are trained in the most advanced techniques in eye exams, glaucoma evaluation, diabetic eye care, cataract surgery, vision correction surgery, eyelid surgery, and cosmetic facial rejuvenation. We also offer an array of glasses and contact lenses and operate a complete optical dispensary for your convenience.  Finally, we have a brand new in-office procedure room for your convenience. 

From treating vision disorders in all age groups to diagnosing ocular diseases or performing sophisticated eye surgery, MPOMG has a team of trusted specialists who make sure that you and your family receive the best eye care on the Peninsula.

Please contact our friendly staff to make an appointment or obtain information regarding our services.


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Mid-Peninsula Ophthalmology Medical Group
1225 Crane Street
Suite 200
Menlo Park, CA 94025