Ocular Hypertension or Glaucoma
The main risk factor for glaucoma is raised intraocular pressure (IOP). Some eyes are very susceptible to even average levels of IOP, whilst other seem particularly resistant to raised levels.
Eyes which have raised IOP, but no evidence of glaucoma, are said to have Ocular Hypertension (OHT). A proportion of eyes with OHT will go on to develop glaucoma, making monitoring essential. However, the frequency of monitoring can be much less than that required for patients with glaucoma.
Some patients with ocular hypertension may require treatment with drops to reduce the eye pressure if the risk of developing glaucoma is felt to be high enough.