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<title>Fundus camera lens cleaning </title>
<link>https://www.opsweb.org/forums/posts.aspx?topic=606206</link>
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<lastBuildDate>Sun, 19 Jul 2026 02:06:58 GMT</lastBuildDate>
<pubDate>Tue, 7 Jul 2020 19:36:06 GMT</pubDate>
<copyright>Copyright &#xA9; 2020 Ophthalmic Photographers&apos; Society</copyright>
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<title>Fundus camera lens cleaning </title>
<link>https://www.opsweb.org/forums/posts.aspx?topic=606206</link>
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<description><![CDATA[<p>Hello all,</p><p>&nbsp;</p><p>

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)
</p><p>
Does anyone clean lenses preventatively (i.e. daily) or should it be done only as needed?</p><p>

Any other tips on camera cleaning and maintenance would be welcome!</p><p>&nbsp;</p><p>&nbsp;

Thanks very much!
</p><p>&nbsp;</p><p>
Noelle Pensec</p>]]></description>
<pubDate>Thu, 11 Jul 2013 15:45:44 GMT</pubDate>
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<link>https://www.opsweb.org/forums/posts.aspx?topic=606208</link>
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<description><![CDATA[<P>I usually do the breath method... a warm (dry) exhale of breath onto the lens at close range, then <SPAN style="TEXT-DECORATION: underline">LIGHTLY</SPAN> wipe lens in a circular pattern going from center of lens outward. I use Kodak lens cleaning tissues, but&nbsp; have used 100% cotton balls in the past as well... be&nbsp;sure they are ALL cotton! I also suggest you wear a surgical&nbsp;glove&nbsp;to prevent any oils from your fingers from getting onto the cleaning tissue. (yes, even with hand washing prior to cleaning).</P>
<P>Never tried the alcohol methods like you are sure to responses about. I am sure that works well too.</P>
<P>Hope this helps...</P>
<P>Gary</P>]]></description>
<pubDate>Thu, 11 Jul 2013 15:59:35 GMT</pubDate>
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<title>RE: Fundus camera lens cleaning </title>
<link>https://www.opsweb.org/forums/posts.aspx?topic=606209</link>
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<description><![CDATA[<DIV class=ForumQuote><B>N. Pensec said:</B><BR>
<P>Hello all,</P>
<P>&nbsp;</P>
<P>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) </P>
<P>Does anyone clean lenses preventatively (i.e. daily) or should it be done only as needed?</P>
<P>Any other tips on camera cleaning and maintenance would be welcome!</P>
<P>&nbsp;</P>
<P>&nbsp; Thanks very much! </P>
<P>&nbsp;</P>
<P>Noelle Pensec</P></DIV>
<P><BR><BR>Hi Noelle,</P>
<P>Great questions. I would recommend cleaning only when absolutely necessary. Every time you clean the front element, you increase the possibility that you'll scratch the lens. Also, depending on the cleaning method you use, the lens often has more artifacts on the surface after "cleaning" than before. So I view cleaning as a last resort. Trying to keep it from getting dirty in the first place is the best strategy. I would also review any technique by the manufacturer of your equipment for their comments before proceeding.</P>
<P>That being said, here's&nbsp;the technique&nbsp;I've used successfully for many years. Use a blower/brush to remove any loose debris. For stubborn tear residue or nose grease smudges, I use Volk Pricision Optical Cleaner pads: <A href="http://volk.com/catalog/index.php?cPath=38"></A><A href="http://volk.com/catalog/index.php?cPath=38" target=_blank>http://volk.com/catalog/index.php?cPath=38</A></P>
<P>If you are using thes pads or any other lens cleaning tissue or pads, first put on a pair of powder free exam gloves. Skin oils easily wick through any absorbent material and get deposited on the lens if you don't. After GENTLY removing any stubborn smudges with the pad, there will still be the slightest residue. I'll take a second pad and expose it to air for several minutes to let the cleaniing fluid evaporate. Then take that pad &amp; remove the residue with a little breath on the lens. Again being gentle with anything that comes in contact with the front element. It's faster to clean the lens this way than it is to explain it. </P>
<P>The only cleaning method I've seen that does a better job was the old Zeiss service tech technique that requires removing the lens, placing it on a turntable and cleaning it with a special cocktail of solvents. Not a DIY solution...</P>
<P>I've tried the lens cleaning pens on the market, but haven't been that impressed. </P>
<P>I have no finanicial interest in the Volk wipes... </P>
<P>&nbsp;</P>]]></description>
<pubDate>Thu, 11 Jul 2013 16:13:55 GMT</pubDate>
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<link>https://www.opsweb.org/forums/posts.aspx?topic=675406</link>
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<description><![CDATA[I'm in agreement with Mr. Miller. A slight wisp of hot breath, cleaned in a circular fashion with a lens cleaning tissue, does the trick. I only clean when necessary. I've heard admonitions from various sources, that such methodology will be detrimental to the coating. However, experience is often the best teacher. I have an old Carl Zeiss lens from a black Zeiss fundus camera, that I transplanted to a later Fundus Flash 3, which is far superior to the OEM lens that came with the FF3, and this lens is still perfect and yields perfect images. Now, keep in mind, that this particular lens, is over 50 years old.]]></description>
<pubDate>Wed, 13 Nov 2013 17:53:27 GMT</pubDate>
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<link>https://www.opsweb.org/forums/posts.aspx?topic=1560866</link>
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<description><![CDATA[Digging up an old thread with a new issue I've been experiencing, hoping to pick up a new skill from my colleagues.<br /><br />With the novel COVID 2019 pandemic we're using masks all the time, so are our patients.  The home made masks especially seem to let a LOT of breath out around the patients nose, which means with every breath their humidity shoots up onto the camera lens, leading to an infero-temporal shadow in our cSLO images from our Spectralis cameras.  <br /><br />Well fitted nose piece-forming masks seem to cause the issue less, but I've noticed the issue fairly consistently with patients to some degree or other when wearing a mask.  Then with our fundus cameras (Canon CF-1, or Topcon TRC 50IX, or TRC 50X) I've noticed my own mask fogging the view finder, and that all patients wearing any kind of mask cause a small fog which creates a soft haze over the image, most especially if any light is on in the room.  <br /><br />Turning more lights off seems to decrease the masked patient effect for the formal fundus cameras, it doesn't seem to influence the cSLO images from the Spectralis.<br /><br />Are there tips or tricks, aside from mask removal, to keep the lenses from fogging up as much?  Anything you've tried at home for defogging windows that might be try-able here?  ]]></description>
<pubDate>Tue, 7 Jul 2020 14:29:58 GMT</pubDate>
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<link>https://www.opsweb.org/forums/posts.aspx?topic=1560868</link>
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<description><![CDATA[Hey Paul, check out this short blog on the topic: http://eye-pix.com/corona-fog/<br />]]></description>
<pubDate>Tue, 7 Jul 2020 14:33:14 GMT</pubDate>
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<link>https://www.opsweb.org/forums/posts.aspx?topic=1560916</link>
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<description><![CDATA[Thanks, Tim! <br />I enjoyed your article!<br />Libba]]></description>
<pubDate>Tue, 7 Jul 2020 17:52:19 GMT</pubDate>
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<link>https://www.opsweb.org/forums/posts.aspx?topic=1560936</link>
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<description><![CDATA[Tim that pretty well described what I've been seeing.  We don't have the 102* lens, but I've been seeing that with the 55* lens, and I've seen it before the masks just because it works more closely than the 30*, but man, I've had some brutal attempts at imaging lately.<br /><br />I wonder if having the camera lens warmer would change things any.  If they condensation occurs because of the coolness of the lens and the dew point of the breath (kind of the reverse issue of taking a warm camera out of a warm camera bag in a cold environment and building a fog over the lens from the temperature transfer).  <br /><br />Maybe having a light fan blowing room temperature air directly down?  If it's gentle enough maybe it wouldn't bother the eye lashes causing more blinks or dry the cornea too much...  :?]]></description>
<pubDate>Tue, 7 Jul 2020 19:31:49 GMT</pubDate>
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<link>https://www.opsweb.org/forums/posts.aspx?topic=1560951</link>
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<description><![CDATA[My colleague and I were just noticing this on a patient just about 5 minutes ago. Great timing for an old thread resurrection]]></description>
<pubDate>Tue, 7 Jul 2020 20:36:06 GMT</pubDate>
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