IOP was measured with a noncontact tonometry and automatic air-puff control (NT 2000; Nidek, Inc., San Jose, CA, USA), the mean of three measurements within a 3 mm Hg range was obtained for each eye. The date and time of the measurement was recorded. IOP measurements were mainly performed between 11:00 and 18:00 hours. First, the right eye was measured three times followed by the left eye. If there was a difference of more than 3 mm Hg between the three measurements, the measurement was immediately repeated. For further calculations, the mean IOP value of the right and left eye was used. Further information on the lens status were determined with slit-lamp examination at baseline examination22 (link) and Scheimpflug imaging at follow-up examination.23 (link) Pachymetry was measured with Pachycam (Oculus, Wetzlar, Germany) at baseline and Pentacam HR (Oculus) at follow-up examination. Glaucoma status was determined on optic disc photographs and using frequency doubling technology perimetry according to a modified definition of the Glaucoma classification according to International Society of Geographical and Epidemiological Ophthalmology (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1771026/).24 (link)