I'm posting it here as a resource, as there are often questions about FAF imaging on the OPS forum & Optimal. Angela Chappell recently posted a question about filters/wavelengths and some of that is covered in the video (skip ahead to about the 40 minute mark). I also have some good examples of exposure differences between filter sets and have attached a low-res PDF of some comparisons here.

The fundus camera images are on a Topcon 50EX with 1^st generation Topcon FAF filters (exciter 580nm/barrier 695nm), new "Spaide” filters (exciter 535-585nm/barrier 605/715nm) and Heidelberg Spectralis (488nm excitation laser/ 521nm barrier filter). Sensor is a Redlake MegaPlus ES 3200. The examples are younger patients which presumably have much less lipofuscin accumulation than the typical ARMD patients we are often imaging. I selected these more challenging patients to show the difference in efficiency in the second generation filter sets.

No proprietary/financial interest in any of these instruments/filters.

Trying to check out the link here at home.... nothing better to do on a Thursday night (am I pathetic, or what!?)

Anyway... the video runs for about 1 second.... I can hear you say something about "having any questions", then the image freezes and goes into a 'buffering' mode. It buffers, and buffers, and buffers...  You get the idea.  Hoping the issue is due to my connection here and I get better results from our faster hospital network. Just thought you'd want to know.

Gary

 Ok, it's running now, but very choppy. Must be home network. Will try from work tomorrow.

Gary

Thakns for posting this lecture. I believe this will be a great resource for the OPS and the ophthalmic communtiity as a whole.

The links to both the lecture and the FAF images opened and played fine on my work computer. Although I do not have time to watch the entire lecture today (busy clinic) I will watch it in it's entirety over the weekend.

I will try it on my home computer and report back.

Thanks,

bob 

Thanks very much for sharing your autofluorescence pictures. We were just wondering if you might also have some showing geographic atrophy with the original FAF filters compared to the Spaide?

Looking forward to having a look at the video.

Thanks for your help,

Angela

Here's a lower-res version of the autofluorescence video. The first link was at 720P resolution, this one is 480. Let me know if this works better. The higher res one worked great here, so I didn't think about the buffereing issue.

Angela,

I'll see if I can dig some geographic atrophy comparisons and post them for you.

Thakns for posting the lower-res version. This will be helpful for those with lower bandwith connections.

BTW - opened and played fine on my home network.

Gary - you gotta get more bandwith.

bob

Here is an example of GA with both filter sets taken a year apart. I don't have any direct (same-day) comparisons of GA available. In elderly patients with ARMD, exposure wasn't really an issue with the old filters since older patients typically have significant accumulation of lipofuscin. That's why the younger patient comparisons are so dramatic (less lipofuscin = poor exposure). Hope this helps,

tim

kind regards, Angela