Ocular hypertension (OHT) describes a condition with elevated intraocular pressure (IOP) above the norm ( > 21 mmHg). By definition the anterior chamber angle is open and there are neither signs of glaucomatous optic nerve damage nor visual field defects. Thus, for the diagnosis of OHT an extensive baseline examination is mandatory in order to rule out pre-existing glaucomatous damage. Patients with ocular hypertension are at a higher risk of developing glaucoma. Therefore, periodical routine examinations with a standardized protocol for specific follow-up examinations are highly recommended.