Campimetry

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Campimetry

Duration: 15 minutes per eye

Requires: 0 prior preparation

What is it?

Campimetry, or visual field, is an ophthalmological test that measures the total field of vision around a fixed point. It determines the amplitude of your peripheral or lateral vision once you have focused on an object.
It is also used to specifically or frequently measure the evolution of the visual field.

How is campimetry performed?

The test is performed in a room with very low light or in darkness. It is easy, but requires great cooperation from the patient, who must concentrate.
It is normally performed using a campimeter, which is an appliance that emits small lights that move at different intensities (static or computerized campimeter).
The patient sits down and rests their head on a machine that projects small lights or flashes. The aim is for the patient to recognize the peripheral lights without looking away from the central point. The patient should press a button whenever each light is seen.
As the test progresses, the campimeter draws a vision map that shows the areas that the patient can see and those they cannot.

6 Key Aspects

  • It is a painless test for patients.
  • It is a non-invasive test (no risks or contraindications).
  • It requires no prior pupil dilation.
  • It requires no prior preparation.
  • Test time: around 10-15 minutes per eye.
  • It might sometimes take longer due to the patient’s visual deficit.

What diseases can be diagnosed?

  • Patients with glaucoma to track their evolution (evolution of the visual field).
  • Patients with retinal diseases (scotoma, retinitis pigmentosa).
  • Systemic diseases that are seen as defects and variations in the visual field (optic neuritis, brain diseases, diabetes, etc.).

Associated Pathologies

  • Retinitis pigmentosa
  • Glaucoma

Associated Treatments

  • Trabeculoplasty
  • Non-penetrating deep sclerectomy
  • Scleral buckling
  • Ocular hypotensive drugs
  • Iridotomy
  • Trabeculectomy