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Optical Coherence Tomography

If your eye doctor needs to examine your retina, she or he may suggest optical coherence tomography. OCT is a noninvasive test that uses light waves to create 3D or cross-section images of the retina’s layers. The images allow the doctor to compare the thickness of your retinal layers with those in a healthy eye. This helps achieve an accurate diagnosis.

You’ll receive eye drops to dilate the pupils, and you’ll sit in front of the OCT device while resting your chin on a support. Scanning takes about five to ten minutes.

OCT enables diagnosis of eye conditions such as:

  • Macular degeneration
  • Glaucoma
  • Diabetic eye disease
  • Optic nerve damage
  • Macular holes

Because it uses light rays, OCT isn’t suited for conditions that prevent light from passing through your eyes, such as cataracts or bleeding.

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Doctor Profiles

The following doctors are part of the Sutter Health network. Learn about the doctors on this site.
Debbie Kuo, M.D.

Debbie Kuo, M.D.

  • Ophthalmology

Susan E. Connolly, M.D.

Susan E. Connolly, M.D.

  • Ophthalmology

Omondi L. Nyongo, M.D.

Omondi L. Nyongo, M.D.

  • Pediatric Ophthalmology

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Munnerlyn Eye Institute

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1085 West El Camino Real

Sunnyvale, CA 94087

(408) 524-5900

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795 El Camino Real

Palo Alto, CA 94301

(650) 321-4121

Santa Cruz Center

Santa Cruz Center

2025 Soquel Avenue

2nd Floor

Santa Cruz, CA 95062

Dublin Center

Dublin Center

4050 Dublin Blvd.

Dublin, CA 94568-3112

(925) 875-6100

San Carlos Center

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301 Industrial Road

San Carlos, CA 94070

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3200 Kearney Street

Fremont, CA 94538

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