Travellers' Tales
Hack #16 in Mind Hacks tells you how to map the shape of your blind spot (everybody's is slightly different, it turns out). Richard Gregory's book Eye and Brain is the classic introduction to the science of visual perception, written with Gregory's much-loved conversational and enthusiastic style. Shortly before his death Gregory wrote the scholarpedia article about blind spots, which you can check out here: http://www.scholarpedia.org/article/The_Blind_Spot.
If you're mad keen to get up to speed on the latest on blind spots and filling in, you can read reviews by Weil & Rees (2011), Komatsu (2006) and De Weerd (2006)
Filling in relies on our attention (or inattention)
