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Optical Coherence Tomography (OCT)

Optical coherence tomography (OCT) is a non-invasive imaging test that analyzes the retina, including its layers and the macula. Optical coherence tomography uses light waves to take cross-sectional pictures of the retina to examine the layers of the retina and the depth of the optic disc. This procedure can be used to analyze retina disease and glaucoma. Optical coherence tomography nerve fiber layer (OCT NFL) is the analysis of the cross-sectional images of the optic disc.
 
Function of the Optic Disc
The optic disc or the optic nerve acts as a transmitter of sight stimulation from the retina to the brain, helping us to see

Candidates for Optical Coherence Tomography
  • Diabetic retinopathy.
  • Age-related macular degeneration.
  • Central serous chorioretinopathy or macular edema due to medical conditions, such as diabetes.
  • Occlusion of the retinal blood vessels.
  • Adhesions in the retina and macula.
  • Retinal detachment.
  • Macular hole.
  • Glaucoma.
  • Neurologic condition related to optic nerve.
To check if the optic disc and retina has any problems or has been destroyed due to medical conditions, causing images not to be sent to the brain. Optical coherence tomography allows early diagnosis of the condition before it worsens.
 
  • Takes short time in analyzing the retina and optic disc.
  • During analysis of the retina and optic disc, no equipment contacts the eye. Optical coherence tomography can be done while the patient is sitting up.
  1. The test takes 10-15 minutes, depending on the patients vision and cooperation.
  2. The analysis of optical coherence tomography results sometimes may need to combine with a visual field test, depending on doctor’s decision and the patient’s conditions.
  1. The patient should sit comfortably during the test.
  2.  During the test, the patient will look at lights in the machine without moving the eyes. They should keep their eyes still. If needed, they can blink.
Additional medication may be needed to dilate the pupils if the machine cannot analyze the retina and optic disc.
 
There are no limitations for travel before or after the procedure.
 
The optical coherence tomography is highly accurate and can help in analyzing the retina and optic nerve. Accuracy depends on the pupil of the patient as well.
 
What if the procedure is not performed?
Analysis of some ophthalmic conditions might be more difficult.
 
None.
 

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