Glaucoma, basically, is a group
of ocular disorders with multi-factorial etiology united by a clinically
characteristic intraocular pressure-associated optic neuropathy. It is normally
associated with the increased fluid pressure in the eye. It causes damage to your eye's optic nerve,
gets worse over time and can cause complete blindness in later stages and has
no true cure.
Yet, early diagnosis of this
disease can offer few options to slow down the progress of this disease and
keep our eyes safe for a longer period. But, generally, in majority of cases
the symptoms are detected in a much later stage where the effective therapy
fails to do any good.
Using
images of the optic disc in the eye, the
cup-to-disc
ratio (CDR) can be calculated by dividing
the
vertical cup diameter (VCD) by the vertical disc diameter (VDD).
