Well actually I can see just as well as before but the song was in my head.
As part of the Bill 2.0 renovations I decided to give contacts a try again. I had some about 8 years ago but lost interest in university but lately I've been considering them and today I went and got a trial pair to try out.
With my glasses my vision is about 20/15 and its pretty much the same with the contacts. It was tough getting used to them for the first few minutes but I've adjusted now and it feels fine. I can tell they are there but it is not irritating me. We'll see how it goes for the next two weeks until I have to make a decision of whether or not to order some.
Lesson of the day: When describing vision, we often hear 20/20 or 20/30 etc. From How Stuff Works:
By looking at lots of people, eye doctors have decided what a "normal" human being should be able to see when standing 20 feet away from an eye chart. If you have 20/20 vision, it means that when you stand 20 feet away from the chart you can see what the "normal" human being can see. (In metric, the standard is 6 meters and it's called 6/6 vision). In other words, if you have 20/20 vision your vision is "normal" -- a majority of people in the population can see what you see at 20 feet. (From here on, please assume that the word normal has quotes around it.)
If you have 20/40 vision, it means that when you stand 20 feet away from the chart you can see what a normal human can see when standing 40 feet from the chart. That is, if there is a normal person standing 40 feet away from the chart and you are standing only 20 feet away from it, you and the normal person can see the same detail. 20/100 means that when you stand 20 feet from the chart you can see what a normal person standing 100 feet away can see. 20/200 is the cutoff for legal blindness in the United States.
You can also have vision that is better than the norm. A person with 20/10 vision can see at 20 feet what a normal person can see when standing 10 feet away from the chart.
Now you know.
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