Error in abstract Michael Crossland, UCL Institute of Ophthalmology 7 March 2011 Please note there is an error in the abstract. The filters used were a 2 log unit Neutral Density filter and a 500nm shortpass filter. Please accept my apologies for this error. Competing interests None declared
Error in abstract
7 March 2011
Please note there is an error in the abstract. The filters used were a 2 log unit Neutral Density filter and a 500nm shortpass filter.
Please accept my apologies for this error.
Competing interests
None declared