[optimal] Re: Fundus camera cleaning regimens
- From: "Hackel, Richard" <rhackel@xxxxxxxxxxxxx>
- To: "optimal@xxxxxxxxxxxxx" <optimal@xxxxxxxxxxxxx>
- Date: Thu, 11 Jul 2013 14:04:58 +0000
I used the either method when I worked with Marshall. It did an excellent job
if you were careful, and I didn't experience any deleterious effect from the
fumes as I seemed to get smarter as I worked with Marshall!
Richard
From: optimal-bounce@xxxxxxxxxxxxx [mailto:optimal-bounce@xxxxxxxxxxxxx] On
Behalf Of Marshall Tyler
Sent: Wednesday, July 10, 2013 10:38 PM
To: optimal@xxxxxxxxxxxxx
Subject: [optimal] Re: Fundus camera cleaning regimens
Fundus camera objective lens cleaning:
Break down the problem to get to the correct solution.
Coated or uncoated lens? Old 30degree Zeiss is uncoated.
Front or rear (inside the camera) side of the lens? Is the lens removable?
What (dirt) are we removing?
Tear film, flicked spots from eyelashes? These are WATER Soluble so use soapy
water first!!
Grease spots: kids fingers or nose prints? Then proceed with the either/alchol
mix IF uncoated lens.
as said by someone else, MAKE your own real-cotton Q-tips using a wooden
stick from a manufactured cotton-stick thing. Why not just use the pre-made
ones?? 'cause they have GLUE which will be dissolved with our non-water-based
cleaners.
If Coated lens, check with the manufacturer for safe protocol.
Canned "air" is pretty dirty stuff and high powered. If you must use it, shoot
it across the lens to have the venturi effect lift the dirt off of the lens,
not shove the dirt into the coatings.
Dust: use a non-brush hand air blower (baby snot [nose stuff] remover bulb)
bulbs with brushes WILL get grease on them IF they are not locked up.
(nurses and Drs just can't keep their fingers to themselves - they just don't
understand that that nice little brush is High-tech cleaning equipment until it
is greased up and useless.
BTW, Zeiss has a nifty hand spun turntable for their little lens. The JOP has a
very old article on using a kids record player to automate this task.
Zeiss has a lens cleaning set: 000000-1216-071
I think that you can only order 3 at a time and must ship via ground. Pretty
flammable stuff! Too many oz of stuff cannot be put into a box.
Either (and many of the volitale cleaners), when left open will absorb water
from the room air. So, open the container, tip a bit into a shot-glass sized
container, and reclose the original bottle right away.
Some lenses have a little black dot on the back of the lens - this is an
anti-reflection reducer (remember the double light reflex when you use an
indirect ophthalmoscope? Anyway, you can remove (as reported by many years ago
by an over-diligent photographer, it BUT the lens will then need to be replaced.
Well, that is all for now, time for rest so I can go sailing!
Marshall
Marshall E Tyler
[http://wssps.org/assets/clipart_vehicles_boats_017.gif] sv Silk
On Wed, Jul 10, 2013 at 8:48 PM, Bennett, Timothy
<tbennett1@xxxxxxxxxxx<mailto:tbennett1@xxxxxxxxxxx>> wrote:
It's probably too simple for the Scientific Session, but would be perfect for
the new Pearls, Tips, & Tactics course.
tim
On Jul 10, 2013, at 8:43 PM, "Peter Hay,CRA, FOPS"
<peterhay@xxxxxxx<mailto:peterhay@xxxxxxx>> wrote:
Hello Richard-
How do you use this device ???? Sounds like a great short scientific lecture
presentation !!
Peter
On 5:38 PM, "Hackel, Richard"
<rhackel@xxxxxxxxxxxxx<mailto:rhackel@xxxxxxxxxxxxx>> wrote:
I've had great luck with these lens cleaning pens:
http://www.bhphotovideo.com/c/product/202075-REG/Celestron_93575_LensPen_Tool.html
One of the Zeiss service people recommended it when he was here cleaning the
camera. I don't know how they work, but like the saying on the Bon Ami can
says: 'hasn't scratched yet."
Richard
From: optimal-bounce@xxxxxxxxxxxxx<mailto:optimal-bounce@xxxxxxxxxxxxx>
[mailto:optimal-bounce@xxxxxxxxxxxxx] On Behalf Of
Hugo_Hur@xxxxxxxxx<mailto:Hugo_Hur@xxxxxxxxx>
Sent: Wednesday, July 10, 2013 5:04 PM
To: optimal@xxxxxxxxxxxxx<mailto:optimal@xxxxxxxxxxxxx>
Subject: [optimal] Re: Fundus camera cleaning regimens
Noelle,
We recommend first using a blower to remove any dust/particles that may damage
the objective lens.
You can then use a lens cloth and denatured alcohol. Do NOT use isopropyl
alcohol or other harsh cleaning chemicals, which can remove the coating on the
outer surface of the objective lense.
Sincerely,
Hugo Hur
On Jul 10, 2013, at 4:59 PM, "Noelle Pensec"
<npensec@xxxxxxxxx<mailto:npensec@xxxxxxxxx>> wrote:
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<tel:%28212%29%20305-0647>
**********************************************************
Electronic Mail is not secure, may not be read every day, and should not be
used for urgent or sensitive issues
--
Sent from my Android phone with K-@ Mail. Please excuse my brevity.
**********************************************************
Electronic Mail is not secure, may not be read every day, and should not be
used for urgent or sensitive issues
Other related posts:
