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The assessment of the deterioration (or loss) of vision in a section
of a field that a patient sees can be appreciated with an apparatus
called a visual field test.
In this painless examination which only last a few minutes, the
examinee is asked to respond to strategically-placed light responses
by pressing a button.
This examination is totally necessary as it reveals the true, functional
visual damage as it is perceived by the patient.
The main concern that arises is that when the visual field test starts
to expose pathological findings, the damage to the optic nerve is
already advanced and irreversible.
It has been calculated in various studies that when the first
deterioration in the analysis of the visual field is detected, then
there is already a functional loss of about 30-40% of the optic nerve
fibers. This has made it of the utmost importance the adoption of
new technology, to recognize very early lesions to avoid the serious
effects of glaucoma.
Perimetry (Visual-Field test)
New technologies for the
prevention, early diagnosis and
monitoring of glaucoma
Despite the fact that the technology that can quickly, painlessly
and with confidence detect the slightest change in the health of the
optic nerve is a reality today, it is a pity that there is still loss of vision
from undiagnosed glaucomatous impairment.
HRT, GDx, OCT examinations of the
optic nerve
These initials correspond to three of the latest technology
examinations whose purpose is to detect the slightest early
anatomical damage to the optic nerve, thus contributing to the
prevention of glaucoma.
All three of these examinations are based on computer systems and
utilize data from international epidemiological studies to identify
