Visual campimetry is performed with the patient seated and with his face glued to the measuring device, called a campimeter, which emits points of light in different locations and with different intensities in the patient’s field of view.
During the test, a light is emitted at the bottom of the device for the patient to keep his vision focused on him, so he must activate a bell in his hand because he is able to identify the new bright spots that appear.but without moving the eyes to the sides, finding the lights only with peripheral vision.
- Patients who wear contact lenses don’t need to take them off to pass the test.
- But they should always remember to bring the latest prescription for the glasses.
In addition, patients who undergo glaucoma treatment and use the drug Pilocarpine should talk to their doctor and seek permission to discontinue use of the drug 3 days before taking the campimetry test.
There are two types of exams, manual and computerized camping, and the main difference between them is that the manual is performed from the orders of a qualified professional, while the computerized test is fully controlled by the electronic device.
In general, manual campimetry is indicated to identify more peripheral vision problems and to evaluate patients with severe loss of visual acuity, the elderly, children or weakened persons, who have difficulty following the device’s controls.
Campimetry is an exam that evaluates vision problems and areas without vision in the visual field, indicating whether blindness exists in any area of the eye, even if the patient does not notice the problem.
Thus, it is used to perform the diagnosis and track the evolution of problems such as:
In addition, this test also analyzes the size of the visual field captured by the patient, helping to detect peripheral vision problems, which are the sides of the visual field.
To learn how to identify vision problems, see: