In the past, high IOP was thought to be the cause of glaucoma and was even included in the definition of glaucoma. Studies after studies later showed that glaucoma may be present in the absence of high eye pressure and it may not be present even if the eye pressure is consistently high.
In modern ophthalmology, IOP is considered to be the only modifiable factor for the management of glaucoma. It is not included in the definition or diagnostic criteria of glaucoma any more.
So if you have high IOP, you don’t necessarily have glaucoma. At the same time, it’s important to remember that you must have complete eye examination by an ophthalmologist to rule out glaucoma.