Of course. At the age of 80, there will be some obstacles in the thinking of the elderly, such as cognitive ability and memory decline. Therefore, whether the elderly can sign the consent form by themselves needs to be judged according to their own specific conditions. If the elderly have good cognitive ability, can understand and are willing to sign the consent form, they can sign it themselves. However, if the elderly have serious cognitive impairment or related health problems, it is necessary for the agent to sign the consent form, or the staff of the medical institution will verbally agree to the operation according to legal procedures or be accompanied by the family members or guardians of the elderly. During this period, doctors and nurses will give corresponding attention and help according to the specific situation of the elderly. In any case, the hospital will take a cautious and thoughtful attitude towards elderly patients and try its best to provide high-quality medical services on the premise of ensuring their physical and mental health and safety.