Narrow-Angle Glaucoma Treatment in Tampa & Sebring
In narrow-angle glaucoma the eye’s drainage angle is anatomically crowded. Pressure can climb slowly for years — or the angle can close suddenly, which is an emergency. A brief laser treatment usually prevents that.
What is narrow-angle glaucoma?
Closed or narrow-angle glaucoma (NAG) is a very different manifestation of the disease from open-angle glaucoma. Here the problem is the anatomy itself: the space between the iris and the cornea is crowded, restricting the outflow of intraocular fluid.
In chronic NAG, the patient slowly loses optic nerve tissue because of that anatomy. It is quieter than an acute attack but it is still progressive, and these sub-varieties are typically faster in their progression than open-angle disease.
The reason narrow angles are taken so seriously even before damage appears is that a crowded angle can close completely — and acute angle closure can take permanent vision in hours.
- Anatomy is the cause, not just slow drainage.
- Faster progression than typical open-angle glaucoma.
- Preventable emergency. A laser opening relieves the crowding.
How narrow angles are found and treated
Narrow angles are found by looking at the angle directly — which is why gonioscopy is part of a complete glaucoma exam.
Careful history
Work-up includes a careful history, especially of eye pain (which can indicate sub-acute attacks), headaches, a feeling of pressure, and redness — symptoms that are not typical of open-angle glaucoma.
Gonioscopy
A mirrored lens lets your doctor look directly into the drainage angle and grade how open or crowded it is. This is the test that identifies narrow angles.
Pupil and anterior segment exam
Pupils and the front of the eye are assessed, since pupil behavior and lens position both influence how crowded the angle becomes.
Pressure and optic nerve
Intraocular pressure, OCT nerve-fiber imaging and visual field testing establish whether damage has already occurred.
Laser peripheral iridotomy
A tiny laser opening in the iris creates an alternative route for fluid, relieving the crowding. It is done in the office in minutes and is the standard preventive treatment.
Ongoing monitoring
Pressure and the optic nerve are followed afterward, and drops or further surgery are added if pressure stays elevated.
Frequently asked questions about narrow-angle glaucoma
What is narrow-angle glaucoma?
A form of glaucoma in which the eye’s drainage angle is anatomically crowded, restricting the outflow of intraocular fluid. It differs from open-angle glaucoma, where the angle is open and drainage is simply slow.
How is it different from open-angle glaucoma?
In open-angle glaucoma the angle is open and not contributing to the disease. In narrow-angle glaucoma the anatomy of the angle is the problem — and it can close completely, which open angles do not do.
What symptoms should I watch for?
Eye pain, headaches, a feeling of pressure and redness of the eye. These can indicate sub-acute attacks and are not typical of open-angle glaucoma. Sudden severe pain with nausea and halos is an emergency.
How are narrow angles diagnosed?
By gonioscopy — using a mirrored lens to look directly into the drainage angle. Pressure alone will not reveal a narrow angle, which is why this exam matters.
What is a laser iridotomy?
A tiny opening made in the iris with a laser, creating an alternative path for fluid and relieving the crowding in the angle. It takes minutes, is done in the office, and is the standard way to prevent an angle-closure attack.
Does the laser cure my glaucoma?
It addresses the anatomy that causes angle closure. If the optic nerve has already been damaged, that damage is permanent and the glaucoma still needs ongoing management with drops or further treatment.
Can both eyes be affected?
Yes, and narrow angles are usually a bilateral anatomical trait. If one eye is treated, your doctor will typically evaluate and often treat the other one too.
Who is at higher risk?
Risk is higher with farsightedness, increasing age, a family history of angle closure, and in people of Asian or Inuit ancestry. Some medications can also precipitate an attack in a crowded angle.
Five Convenient Florida Locations
Sebring
4211 US Highway 27 NSebring, FL 33870(863) 385-1544
Carrollwood
13904 N Dale Mabry Hwy, Ste 200Tampa, FL 33618(813) 908-2020
South Tampa
113 S Armenia AveTampa, FL 33609(813) 908-2020
Brooksville
14543 Cortez BlvdBrooksville, FL 34613(352) 596-4030
Gainesville
2521 NW 41 StGainesville, FL 32606(352) 377-7733
A narrow angle is worth finding early
Gonioscopy takes a minute and a laser iridotomy takes a few more. Both are far easier than an angle-closure attack. Book a glaucoma evaluation at any of our five Florida locations.