General

Your doctor has agreed upon in consultation with you for an eye examination. In this folder you will find additional information on the following ophthalmological examinations:

• Visual field testing
• Optical Coherence Tomography (OCT)
• Corneal Topography
• Biometrics
• Pachymetry

The investigations

An optometrist is conducting the investigation. He will always give you instructions during the investigation. Try to follow these as close as possible.

Visual field testing

A Visual field testing shows the sensitivity of the retina. The test is painless and takes about 15 to 20 minutes. Your eyes will not need drops.

During the investigation, one eye is covered. With your other eye you should look at the light of the center of the sphere. You should try to always look at this light during the procedure. Meanwhile in other places appear in succession small points of light. As soon as you see a bright spot appear, then press the button. This is how your field of vision will be investigated

Optical Coherence Tomography (OCT)

OCT is an examination using infrared light through which your retina and optic nerve are examined. The research is painless and takes about 5 to 10 minutes. Just before the test, you can get an eye drop. This provides a magnification of your pupil. The reaction time of the eye drop is 5 to 10 minutes. In the majority of cases this is not necessary.

During the investigation your chin will be placed on the chin rest and your forehead against the headrest. When you look at the device, you will see red light containing a green dot. During the examination, you must always look at the green dot. The optometrist can then make recordings from your retina and optic nerve.

Corneal topography / Wavefront analysis

In this examination, the shape of the cornea is captured, which is important in the early diagnosis of for example keratoconus. The wavefront analysis crossbar sees the internal imperfections (aberrations). This causes that complaints can be explained which aren’t detectable by standard assessment

Biometrics

A biometric is an echo of the eye at which the axis length of the eye can be determined. This research is always done for cataract surgery in order to be able to determine the correct power of the artificial lens implant.

Pachymetry

Pachymetry is an investigation to measure the thickness of the cornea. This is important in a number of corneal defects, and to determine whether an eye is suitable for an excimer laser treatment or an Artisan implant.

The outcome:

Immediately after the examination you get the results and, if necessary, a follow-up appointment at the ophthalmologist.