Can glaucoma occur at normal eye pressure also?
Yes. Each eye has different capacity for tolerating the pressure. What may be normal for majority of eyes may be high for certain eyes. There is a subtype of glaucoma called ‘Normal Tension Glaucoma’ in which the eye pressure is apparently within the normal range, but still the optic nerve gets damaged. Hence, presence of ‘normal’ pressure alone does not rule out glaucoma. In suspected cases, one would like to do other tests as well, even if the pressure is ‘normal’.
