At the age of 40, cone cornea may continue to develop, but generally at a slower rate, and in some patients, the condition may be stabilized. Conical cornea is a progressive corneal disease, most commonly seen around puberty, this stage of the disease develops faster, patients may show progressive vision loss. In general, by the age of 40, cone cornea still has the potential to continue to develop, but the rate of development is generally relatively slow, and some patients’ condition is in a stable state. Therefore, even if patients with cone cornea are older, it is still recommended that they undergo regular checkups at the hospital to assess their condition and follow the doctor’s instructions to choose the appropriate treatment.