[optimal] Re: Optos
- From: Jim Perry <jimperry275@xxxxxxxxx>
- To: optimal@xxxxxxxxxxxxx
- Date: Thu, 7 Aug 2014 14:13:30 -0400
Thank You, The input from everyone is very helpful and much appreciated. I
understand,like with every device we use they will all have their pluses
and minuses.I would not consider it as the sole source of imaging,but
hopefully it will give us an opportunity capture different images that we
are currently unable to with a standard fundus camera.
On Thu, Aug 7, 2014 at 12:21 PM, Peterson John C <JPeterson@xxxxxxxxxxxx>
wrote:
> I also agree with what’s been written so far. It’s a great technology
> with a brand new learning curve. The best images make the challenge well
> worth it.
>
>
>
> My $.02:
>
>
>
> Depth-of-field is huge, so images tend to be razor sharp on the posterior
> pole by default.
>
>
>
> The 200 degree angle is attainable only in the nasal-to-temporal axis.
> Lids and lashes inevitably reduce the usable image superior-to-inferior.
>
>
>
> At 3900 x 3072, the image pixel density is plenty high to allow zooming /
> magnification to locate small findings.
>
>
>
> Although the false color image takes some getting used to, the ability to
> isolate the red and green channels into individual images is a great tool.
> Shoot one picture, and get monochromatic green and red images for free!
>
>
>
> FA images can be spectacular. The sensors are very sensitive, and I
> imagine you could get a good test with lower dye dosage, although we
> haven’t (yet) tested this theory.
>
>
>
> Patients experience a moving scan across their field of vision, not a
> single flash. Some of our patients, most notably small children, can’t help
> but lose fixation and follow the scan during image capture, making it next
> to impossible to get what you need.
>
>
>
> The moving scan is less bright than the flash of a fundus camera. Your
> photophobic patients will thank you.
>
>
>
> Positioning the patient and dealing with lid/lash artifacts are the two
> biggest challenges. Your docs will have to learn to accept a little bit of
> one or the other.
>
>
>
> Hope this helps….
>
>
>
> ********
> John C. Peterson, MBA-ITM
> Senior Ophthalmic Photographer
>
> UW Health Eye Clinic
> 2880 University Ave., Rm. 246
> Madison, WI 53705
> (608) 263-7163
>
>
>
> *From:* optimal-bounce@xxxxxxxxxxxxx [mailto:optimal-bounce@xxxxxxxxxxxxx]
> *On Behalf Of *Paula Morris
> *Sent:* Thursday, August 07, 2014 10:28 AM
>
> *To:* optimal@xxxxxxxxxxxxx
> *Subject:* [optimal] Re: Optos
>
>
>
> Great response, Tom. I concur
>
>
>
> P
>
>
>
> *From:* optimal-bounce@xxxxxxxxxxxxx [mailto:optimal-bounce@xxxxxxxxxxxxx
> <optimal-bounce@xxxxxxxxxxxxx>] *On Behalf Of *Tom Steele
> *Sent:* Thursday, August 07, 2014 9:29 AM
> *To:* optimal@xxxxxxxxxxxxx
> *Subject:* [optimal] Re: Optos
>
>
>
> Jim,
>
>
>
> I was one of the beta testers in 2008. This is not meant to be a
> replacement for 30 and 35 degree field fundus cameras. Holding eyelids is a
> challenge, there seems to be a swath of the image (middle) which is much
> sharper than the top and bottom of the image. Perhaps this was changed in
> the newer models in the last 6 years.
>
>
>
> Eye lashes sometimes are a problem with images, color imaging is not very
> accurate, tends to lean heavy on the green side.
>
>
>
> I like the wide angle, great for getting images out in the peripheral
> retina. The tight field imaging is still wider than tradition 30 and 35
> degree cameras.
>
>
>
> Like all machines some will hate it others will praise it. The wide angle
> imaging complements the other imaging systems in the office: ie. Topcon,
> Zeiss and Heidelberg.
>
>
>
>
>
> Thank You,
>
>
>
> Tom Steele,
> CRA
>
>
> Midwest Eye Institute
>
> 200 West 103rd Street
>
> Indianapolis, Indiana 46290
>
> 317.817.1018
>
> tsteele@xxxxxxxxxxxxxx
>
>
>
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>
> *From:* optimal-bounce@xxxxxxxxxxxxx [mailto:optimal-bounce@xxxxxxxxxxxxx]
> *On Behalf Of *Jim Perry
> *Sent:* Thursday, August 07, 2014 10:08 AM
> *To:* optimal@xxxxxxxxxxxxx
> *Subject:* [optimal] Optos
>
>
>
> Our retinal practice is planning to purchase the Optos 200tx.We will demo
> it for a month,with plans to add it as a second imaging device.We also have
> a Topcon 50dx and 50 ix, which will be moved to our seldom used sattelite
> office.I'd like to know what others experience and opinions are of the
> 200tx. Thanks!
>
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