The two cases we present here are good examples of how the diagnosis of glaucoma is often missed because of lack of history-taking and/or insufficient clinical examination. Glaucoma is the second leading cause of blindness worldwide;1 nevertheless, knowledge of this disease is poor among the general population as well as among health professionals.2 Primary open-angle glaucoma (POAG) is a chronic and progressive optic neuropathy that causes visual field loss, eventually leading to complete blindness. It can be present for a long time before patients have symptoms. About half of those affected with glaucoma are not aware they have the disease.3