Double Vision

I had my eyes tested a couple of days ago and apparently my eyes have improved by around 0.75 since my last test. If I continue at this rate I should have perfect vision by the time I'm around 55.

According to the optician I should have been experiencing double-vision, headaches and tired eyes recently because my current glasses are too strong. I'm certainly experiencing all those things today, but I'm pretty certain that it has more to do with last night's beer intake.

I'm not sure I believe too much of what he says though; when I mentioned that I'm going to Vietnam, he asked if I was going to see how the war is going. And when I was choosing which specs to buy, he tried to convince me that I should go for a hideous designer brand on the basis that, even though it would be more expensive, I would've actually 'saved' more money due to the 50% discount he was offering. Do people really fall for that clap-trap? I fear the answer is yes.