A method to obtain and view lop time developments of a patient and to generate database relating to a patient's individual IOP development, includes the steps of continuous measurement and storage of IOP data of a patient over a period of time of at least 24 hours, during a normal day and without medication, and then continuous measurement and storage of IOP data of a patient over a period of time of at least 24 hours, the patient taking their medication, wherein medication times, medication durations, doses, active substances, events throughout the patient's day are recorded, wherein the IOP data are measured using at least double the frequency of an assumed time-based pattern in the IOP development and wherein the stored data are relayed to an analysis unit and the data is analysed.