What is the OCT study for?

07 August 2025

Optical Coherence Tomography (OCT) is a non-invasive imaging test that allows for highly detailed views of the internal structures of the eye, such as the retina, optic nerve, and macula. Its precision is so high that it can detect microscopic changes before symptoms or visual damage occur.

What does OCT evaluate?

OCT provides cross-sectional images of the ocular tissues, acting like an “eye scanner.” With this test, many eye diseases can be identified and closely monitored, including:

• Glaucoma: measures the thickness of nerve fibers and allows early detection of optic nerve damage.

• Age-related macular degeneration (AMD): assesses changes in the macula that affect central vision.

• Diabetic retinopathy: detects fluid accumulation or bleeding in the retina.

• Macular edema: measures inflammation in the macula.

• Macular holes or detachments.

• Treatment follow-up: helps determine whether a treatment is working or needs adjustment.

How is it performed?

It is a quick, safe, and painless procedure. The patient places their chin on a support in front of the OCT device and must keep their gaze fixed for a few seconds. There is no contact with the eye and no need for anesthesia.

At the Espaillat Cabral Institute, we have high-resolution OCT technology that allows us to make early diagnoses and offer more effective treatment to protect your vision.

Do you have questions about your visual health? Schedule an evaluation with us.