Eyesight is the sense most taken for granted and most missed when it begins to fail. Much of what threatens it is either correctable with a prescription or, caught early enough, treatable — which makes recognising the warning signs more useful than anything else on the subject.
This section covers the common eye problems and how they present, the real differences between glasses and contact lenses once preference is set aside, and the distinction that matters most of all: which symptoms warrant an eye test within a few weeks, and which warrant one the same day.
