I've been using hot breath and a clean cotton ball for 11 yrs with no problems. Sometimes I'll puff it with canned air afterwards to get the little cotton hairs off. The most stubborn nose grease smears may take two times to fully clean. I've never had any scratched or marred lenses. Some of my photo staff insist on using lens wipes, but I think they're a waste of money. Sean Grout West Coast Retina Medical Group San Francisco ________________________________ From: Noelle Pensec <npensec@xxxxxxxxx> To: optimal@xxxxxxxxxxxxx Sent: Wednesday, July 10, 2013 1:57 PM Subject: [optimal] Fundus camera cleaning regimens Hello OPTIMAL, I am wondering if anyone has a set protocol for cleaning fundus cameras. Specifically, how often do you clean the front objective lens, and what methods do you use? We recently discovered that one of our camera lenses was badly scratched from someone cleaning with something abrasive (seriously looks like it was done with sandpaper..thankfully it does not affect the image at all in most cases) Any other tips on camera cleaning and maintenance would be welcome! Thanks very much! Noelle Pensec Noelle Pensec Columbia University Medical Center Diagnostic Imaging Specialist (212) 305-0647