Presbyopia Articles - Articles by Adrian Glasser and Ronald Schachar review the mechanism of accommodation, theories of presbyopia development and surgical reversal of presbyopia - http://www.emedicine.com/oph/PRESBYOPIA.htm
The Eye Digest - Explains the process of accommodation and describes strategies for managing the inability to focus on near objects. - http://www.agingeye.net/otheragingeye/presbyopia.php