The OTR should know that this assessment is auxiliary: it should not be used as the sole criterion for the diagnosis.
The contrast sensitivity test is the test that evaluates, through the projection of images, the quality of vision in different levels of illumination.
In the contrast sensitivity test, the patient is asked to read the smallest possible letters in a table. In the second moment, the contrast between the letters is reduced so that the reading ability of the patient with this alteration can be evaluated. The exam is not invasive, nor are eye drops instilled.
With this information we can conclude that the OTR cannot just use the contrast sensitivity test to complete a diagnosis.
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