The operating rooms are open almost 24 hours per day, with cases ending well into the evening. Cornea and retina teams, in particular, are often operating past 11pm in the evening. Residents and fellows sometimes graduate with 2000 cataracts under their belt. Fellows easily exceed a 100 hour work week, and the odd places and positions in which I have happened upon them sleeping is a testament to that. In off-work hours, the library is packed and the wet lab is in near constant use.