By Sam Elliott-Gibbs One of the earliest signs that you may be suffering from Alzheimer’s disease could be changes to your vision, experts say. The heartbreaking disease is one of the most common types of dementia and the earlier it is diagnosed the better for the patient. It can be difficult to realise someone has the condition early – and many of the symptoms are often put down to factors including depression or stress. Alzheimer’s is a progressive disease, where dementia symptoms gradually worsen over a number of years. In its early stages, memory loss is mild, but with late-stage Alzheimer…