I had very little idea about what my prescription meant until I started researching entries for this blog and buying glasses online.
Very admirably, Glasses Direct want to demystify the whole experience:
“…with the intention of de-mystifying optician speak and empowering the prescription glasses wearing public to get the best value for money, we have launched the Seeing Clearly guide – helping you understand your next visit to an optician and giving you the knowledge to ask the right questions…”
They’ve introduced a section of their site called Seeing Clearly to explain eye tests, prescriptions and the like. It’s well worth a read.