Vitreoretinal Surgery
The vitreoretinal surgery book can be found on the Apple iBookstore using the search term "Vitreoretinal". This is by far the easiest way to get the book, especially when using an iOs device.
If you do not have access to the iBookstore the interactive iBook can be found here.
If you want to view the book on any other device a pdf version (with none of the intractive features or videos) can be found on my dropbox here.
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If you are unable to access dropbox for any reason a condensed pdf of the book can be found here.