I visited my optician last week and the time has finally come for me to start wearing glasses for driving. As a result of this I figure it is probably a good idea to start thinking about prescription lenses for my cycling glasses too.
Looking on the web, the prescription glasses that I'm seeing are basically "regular" cycling glasses (including regular lenses which may or may not be tinted), plus some kind of insert (clear prescription lenses) which seems to clip to the frame and sit between eye and frame.
The "insert" appears to be shaped to the frame, so it looks like I'd need to buy both glasses and insert, and possibly throw my current glasses away. (I'd rather not do this, but if I have to, I have to.)
I guess my first question, for anyone who already wears prescription glasses, is whether my description above is accurate or not? Second, does having this insert actually "work"? By "work", I mean being able to ride a bike at decent speed, for several hours, up hills, down dales etc. For example, do people experience fogging problems (moreso than you might with non-prescription glasses)?
My next question is more general, a kind of a technology rec. Are there other viable approaches to prescription cycling glasses, that I should consider? For example is it possible to get prescription tinted plastic lenses that will just snap into a frame? (my gut feel is that I would prefer this approach if possible.) [Edit - I've now seen that this approach seems to be available, albeit at a premium (especially as I'd want lenses in at least two colours).]
For the purposes of this question, it's fine to treat money as irrelevant, I can worry about this later.
Please note lastly that I'm not looking for any advice in the general area of cycling glasses here, I've been using them for years and think I already understand the pros and cons pretty well. It is purely the prescription aspect of things, I'd like to know more about.