A funny father's day card for your visually impaired Dad. Traditional Henry Snellen eye chart typography design - unique science card for visually impaired Dads.
Hopefully your Dad has good enough eye sight to at least read his father's day card. The message written in the eye chart says "Happy fathers day Dad. You don't need your glasses to see I turned out great". The back of the card has a short caption about the origins of the iconic Snellen eye chart. We have lots of humorous science greeting cards in the Newton and the Apple shop.