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OPS Forum Rules and 'Netiquette' Locked Topic 0 T. Bennett OPS Forum Rules and Netiquette The purpose of the OPS Forum is to provide connections between and support for OPS members. We want this to be a place where our community will develop; we can enjoy one another's company, share interests and foster education. To achieve this, we strive to maintain an atmosphere that can be enjoyed by all and we ask all members of the community to be respectful at all times. This means please use etiquette and politeness. Treat people with kindness, gentleness and respect. If you do this, the rest of the code of conduct won't need more than a cursory mention. The OPS Forum Moderators reserve the right to edit or delete any forumcontent that does not adhere to these rules. Start clear threads. Start your post with a clear specific subject. Post a follow up to let the people that help you know that you appreciate their help and let future readers know the information was useful. You can also mark a thread solved as a courtesy. Stay on topic. Each thread should stay on one topic. Off-topic messages may be deleted without notice. If you have made a mistake, apologize, and re-post to the correct thread, if one exists. Otherwise, start a new one. If your message is deleted, the poster is responsible for re-posting to the correct thread. Keep the language and tone polite and respectful and maintain decorum. Name calling, rudeness, disrespect toward others, insults, profanity or inappropriate discussion will not be tolerated. Any attempt to disrupt a thread or to promote discord is prohibited. Often discussions deteriorate in response to a single message. Do not respond back. It takes two for a discussion to fly off. Remember: everyone has the right to express their opinion, but within the bounds of decency and sensitivity to others. All posts made to these forums express the views and opinions of the author of each post. Respect the privacy of others. No advertising or commercial postings are permitted except as an appropriate reply to a message. You should identify your business. We have sponsors listed on the Sustaining Members' Page. If you wish to become a Sustaining Member with a link for our members to access, please apply for membership as a Sustaining Member. No job advertisements or employment opportunities may be posted in the OPS Member Forum. They can be submitted to the OPS Career Center through the OPS Central Office. Politics and Religion: These two topics can cause serious problems. Please find another venue to exercise your freedom of speech on these topics. No trolling. Don't post to inflame others. Substance is the key to avoid trolling (sowing discord or attempting to upset people). There is zero tolerance for trolls. They cannot be reasoned with and we don't attempt to. When writing your messages, please use the same courtesy that you would show when speaking face-to-face with someone. This is less obvious and harder than you think. Practice. No pornographic material. Sexually suggestive material will seriously scrutinized. We'd like everyone to be able to read the forums at work or share them with family and friends. No promotion of violence or advocating breaking the law. Unsubstantiated accusations, libelous and defamatory statements and innuendo prohibited. Do not post copyrighted materials - text or images - without the copyright-holder's permission. You may be asked to prove you have permission. No attacks on individuals, groups or businesses. Criticize ideas, not people. Intolerance toward race, gender, ethnic groups or business is prohibited. Avoid uppercase. Don't type whole messages in uppercase as this is the method to indicate shouting. It is also difficult to read. No profanities or foul language. We reserve the right to edit or remove inappropriate messages. Avatars, photos and images must adhere to forum standards and norms. No spamming. Links: You may post links to sites with content that is acceptable according to this code of conduct Financial Interest. If you have a financial interest in a product or service you discuss in this forum, please indicate so in your post. Remember, you are representing yourself to your colleagues and your profession. We are individuals with different interests, but with OPS in common. The OPS Board of Directors
by T. Bennett
Friday, March 23, 2012
OPS Member Forum Participation Locked Topic 0 T. Bennett Dear OPS Member, This community forum is a vehicle for OPS members to share thoughts, ask questions,and learn more about what goes on in our Society and our profession. Although the forum is visible to anyone visiting the OPS website, you must be a registered OPS member in order participate in the forum and take advantage of the all the features of the site. OPS members who wish to post a new forum topic or reply to an existing thread need to login to the website. Once logged in, you can post to the forum and subscribe to receive email alerts whenever a new topic is posted. If a particular topic is of interest to you, you can then subscribe to that thread to receive alerts whenever a new post is added. If you are not an OPS member and enjoy the forum, blogs and other public features of this website, please consider joining the OPS so you can receive these and other benefits of OPS membership. We hope you enjoy our online community forum! OPS Board of Directors
by T. Bennett
Wednesday, March 21, 2012
Thoughts on Oral Administration of Angiograhic Dyes 3 A. Howard Maybe one of the reasons we see more reactions to ICG is related to how it binds to plasma proteins and gets rejected into the bile, thereby collecting a more condensed dosage in one location in the body rather than having it spread out like Sodium Fluorescein does.In theory, if there was a way to bind the ICG to something else, so it no longer was being collected into the bile it might be possible to reduce ICG reactions even more as a result of spreading it out to more cells.From the article "Image-Guided Open Cerebrovascular Surgery"" After intravenous injection, ICG quickly binds to lipoproteins (within 1 to 2 seconds) and remains in the circulation.45–47 ICG is not metabolized in the body and is excreted rapidly and exclusively by the liver into bile.45–47 Its short plasma half-life of 3 to 4 minutes allows repeated intraoperative injections. It is not reabsorbed from the intestine nor does it undergo enterohepatic recirculation.45–47 The recommended dose for ICG video angiography is 0.2 to 0.5 mg/kg; the maximal daily dose should not exceed 5 mg/kg.46"and also:"Hepatic ToxicologyG.L. Plaa, in Comprehensive Toxicology, 20109.06.3.2 Indocyanine Green RetentionThe dye indocyanine green (ICG) was originally introduced into human clinical medicine to measure cardiac output. Subsequently, however, it was observed that about 97% of the intravenously administered dose in dogs was excreted into the bile, while none was found in the urine (Wheeler et al. 1958). Cherrick et al. (1960) reported that ICG was rapidly and completely bound to plasma protein, that it was excreted into the bile in an unaltered form, that extrahepatic removal did not occur, that ICG was nonirritating when administered subcutaneously, and that it produced no untoward reactions upon single or repetitive injections. The substance, therefore, had about the same spectrum of sensitivity and specificity as BSP but offered some more favorable properties than BSP for use in humans."Both of those are from:https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/indocyanine-green
by P. Crown
Friday, November 30, 2018
FF450+ Lens Hood 2 J. Strong We don't have an FF450 and I've not used one so I'm not a ton of help...but some food for thought.It should be easy enough to find a different way to have a lens cap on there, even if it means making a detailed sketch and having a 3D printer burn one out. Speed is an important thing, the longer it takes to get the photo, the less patient the patient is, and the quality potential for imaging tends to decrease. Is there a different way to drop the glare? Overhead lighting being turned off? Different location for room lighting (under cabinet only during capture vice using overhead)? using only reflected light during OCT on matte painted walls to reduce polarized light potential? At the worst if the glare is from external lighting you could drop a sheet over the photographer, camera, and patient and reminisce of the similarity to wet plate collodion photograph capturing processes.
by P. Crown
Saturday, October 27, 2018
Do you routinely perform OCT with or without dilation? 5 M. Whelehan I should add, that when obtaining OCT's you're able to see if you need to get BR, FAF, multi-color or true color of specific pathologies. For 3 of our 4 retina specialists I see the new patient before they do. A lot of the time our referring doc's don't include locations of issues, etc., so when a patient is dilated I can save the MD time by catching scans of whatever the issue is without them needing to bring the patient back for a second go.This being said, we scan out to the edge of the retina to find retinal tears, lattice degeneration, CHRPE lesions, melanomas, nevi, you name it. Without dilation it's much more difficult on the patient, and it's more time consuming.Why OCT through those areas rather than just obtain a super-duper-wide-angle-everything's-funky fundus image? A fundus image doesn't show the RPE in cross section. Some tears are self-sealed and don't need laser, the OCT can show that. Some tears aren't apparent and under examination look to be "white without pressure", where the OCT can show a micro-tear. Is there harm in dilation? In my own personal theory I feel that there's less potential harm in dilation than in not dilating. What's worse than having an issue, is having an issue that was overlooked because we were trying to save 2 minutes of time.
by P. Crown
Saturday, October 27, 2018
Membership Meeting Minutes from 2017 2 B. McCalley I second the Thank you!Libba
by E. Affel
Monday, October 22, 2018
In Memory Of Harry Kachadoorian, CRA 1 J. Soque I have fond memory's of Harry, and I remember some of his fantastic images. It is a loss to the profession, as well as his family and friends.Alan
by A. Frohlichstein
Monday, October 15, 2018
In Memory Of Harry Kachadoorian, CRA 2 J. Soque Sorry to hear the sad news. Harry was definitely one of the good guys. Nice photo, Jim. How recent was that taken?
by T. Bennett
Monday, October 15, 2018
White Circles /Spots on Pheriphery of Fundus Photos? 14 C. Boddie I have had this same issue with our Canon CR-2 AF. Are you using the 2 lights in your image to focus? They can be inaccurate in the periphery since our camera doesn't swivel on it's axis. After an image with the spots I adjust up or down and forward or back to find a full image (or as full as I can get) then capture and adjust focus from there, sometimes I can get a more clear photo. Hope it helps!
by
Wednesday, October 10, 2018
Barrier Filter for DSLR 1 P. Crown If anyone else finds themselves looking for a barrier filter for a DSLR, I've found at least one supplier. Peca Productshttp://www.ir-uv.com/blocking.htmlcurrently they have these available, most in the 58mm and 62mm filter ring sizeDigital Filter PECA 700 (Hot Mirror) transmitting visible light - 380nm to 730nmDigital Filter PECA 702 (2B) transmitting visible light & infrared - 500nm to 1000nmDigital Filter PECA 708 (8) transmitting visible light & infrared - 520nm to 1000nmDigital Filter PECA 712 (12) transmitting visible light & infrared - 540nm to 1000nmDigital Filter PECA 715 (15) transmitting visible light & infrared - 560nm to 1000nmDigital Filter PECA 716 (16) transmitting visible light & infrared - 580nm to 1000nmDigital Filter PECA 721 (21) transmitting visible light & infrared - 580nm to 1000nmDigital Filter PECA 723 (23A) transmitting visible light & infrared - 600nm to 1000nmDigital Filter PECA 725 (25) transmitting visible light & infrared - 620nm to 1000nmDigital Filter PECA 729 (29) transmitting visible light & infrared - 640nm to 1000nmDigital Filter PECA 744 (44A) transmitting visible light - 450nm to 520nmDigital Filter PECA 758 (58) transmitting visible light - 510nm to 550nm
by P. Crown
Thursday, September 27, 2018
Scientific Exhibit Committee Looking for New Members 0 B. McCalley Hi all, The OPS Scientific Exhibit Committee is looking for some new members. What does this committee do and how much work is involved do you ask…well… ·         Most of the work takes place between June and November ·         2 members organize, host and judge the print and stereo divisions ·         2 members mount the prints and put together the stereo slides ·         1 member puts the PowerPoint presentation together for the banquet ·         1 member organizes the volunteers to host the exhibit at the AAO ·         1 member updates the Call for Photos ·         We have about 2-3 online conference calls a year ·         The Chair of the Committee works with the AAO on booth space ·         Assemble and dismantle the exhibit at the AAO We are looking for at least 5-6 volunteers to join the committee. It’s a lot of fun, it’s laid back and  we will mentor all new committee members. Please contact me offline if you’d like to join, tjsteffe@umich.edu   Thanks, Tim Steffens
by B. McCalley
Tuesday, September 25, 2018
Final Two Webinars for September 0 B. McCalley There are two webinars left in the month of September.  This is a great way to earn continuing education credits towards recertification.   It's not too late to register for Olivia Rainey, OCT-C's September 20th webinar. "Ultra Wide Angle Imaging: Seeing into the Far Periphery'.   You can use this registration link:   https://www.opsweb.org/events/register.aspx?id=1134146   also check out the webinar to be held Tuesday, September 25th by Ryan Nelson, CRA, OCT-C on Swept source OCT.  Here's the registration link  https://www.opsweb.org/events/register.aspx?id=1134147    
by B. McCalley
Tuesday, September 18, 2018
2018 Scientific Exhibit print winners by name 0 S. Alfred, CRA, OCT-C Here they are!   Find attached the list of winners for this year's 2018 OPS scientific exhibit - print division.  The word doc. is strictly names of the winners, and which category/image title that received an award.  There are no accompany images.  The document attached may require downloading to your device. I request that those of you who's names appear here, please perform the following ASAP: Locate your image file in your computer, the file/files which are your winning image/s named in the Word doc   Label that file in the following manner.   Start with: 1st, 2nd, 3rd, or HM, then the category, finally your last name.  For example: 1st EyeasArt Morehead.tiff HM Fluorescein Angiography Bono.tiff 2nd SlitLAmp Leo.jpg     -please use space between each sections- Once the file has been labeled accordingly, please attach it to an email, to me at OPS.SE.printwinners@gmail.com   IF you could include with the file, in the body of the email, the precise address you want the mounted winning image mailed to, that would be extra helpful to me.  That mailing doesn't occur until 2019. Note, this Word doc. shows the final label that will be placed with your winning print, for display at the AAO.  If there is any information missing or incorrect, please let me know either here on the forum, or email.  Check your certifications, Institution, title of the image, etc.  The uploaded images will be used for the Welcome reception in Chicago and for the OPS Journal.  Best quality TIFF or JPEG.  I have tested file size up to 7MB.   Please stay tuned to this forum for future requests, or should issues occur with this new process. I will reply to your email with a confirmation if the image arrived successfully.   Thank you for your submissions, congratulations on being a 2018 winner!  Over 600 entries this year, as always stiff competition.   Thanks for your patience as we refine the Exhibit processes.  I personally am excited to share the winning names with you prior to the Annual program.  Our OPS membership makes great things happen, your participation in the contest makes it successful. Stuart and the SE committee.  
by S. Alfred, CRA, OCT-C
Monday, September 10, 2018
We Apologize for the Cancellation of the Webinar on 9/6/18 0 J. Soque We at the OPS Board of Education certainly apologize for the cancellation of the Webinar entitled “Artificial Intelligence in Retinal Diagnostics: A Picture is Worth a Thousand Words” scheduled for Thu, Sep 6, 2018, 9:00 pm – 10:00 pm, EDT.  Unfortunately Dr. Stephen Odaibo, had an important change in his schedule and could not keep his commitment to speak for our webinar series.   FORTUNATELY, he will be rescheduled to our OPS December 2018 Webinar Series, so you still have an opportunity to hear his webinar and receive your CEC credits, as well as sign-on and Register for his, and all of our webinars at https://www.opsweb.org/events/event_list.asp    (Update in progress)   Thank you! Jim Soque Chair, Board of Education, The OPS and Heather Carmello, Webinar Chair, Vice Chair, Board of Education, The OPS
by J. Soque
Friday, September 7, 2018
Is there a way to register for multiple webinars at once? 0 M. Turano, Jr. Anyone know, I tried but couldn't figure out if i just had to do them one by one?
by M. Turano, Jr.
Thursday, September 6, 2018
DR Screening Camera 2 D. Cimino Having looked at some of the offerings out there, i had some questions about the numerous hand-held units, that perhaps someone out there can verify or debunk. I've been told that the Zeiss VisuScout 100 and the Volk Pictor "come from the same factory" and are then re-branded. Anyone have any insight. Similarly, I've heard that the JedMed and the Nidek are again "the same camera" but rebranded.Thanks!j-
by J. Strong
Wednesday, August 8, 2018
Adaptive Optic Course - Prais, France 0 F. Galli Good evening colleagues, Allow me to attach the link of a course on adaptive optics that will be made in October in Paris. I use adaptive optics for a few years, with great satisfaction for the details of the photos in comparison to more traditional instrumentation. https://www.fcrin.org/en/actualites-fcrin/october-8-2018-autumn-course-adaptive-optics-imaging   Thank you      
by F. Galli
Saturday, July 14, 2018
OIS 5 MP Digital Camera Cleaning/Dismantle‏ 4 J. Soque black dots like those are on the sensor, if they're lighter they're on the optics
by P. Crown
Monday, July 2, 2018
Standalone montage software? 3 N. Pensec We've had issues with our Escalon 2000 software (seriously, it's 18 years old) for our Topcon.  I simply resorted to Photoshop to merge the images into a nice composite.  The software cranks it out really fast and with fewer overlap issues like what I've seen from Heidelbergs proprietary software (theirs usually has overlapping veins/arteries near image overlaps) Here are some examples of what I've done a couple times.
by P. Crown
Sunday, June 17, 2018
Zeiss 450/Merge Issue 5 G. Miller GaryIs it present 100% of the time, at all mags, w & w/o astigmatic correction? On a plane or on a train?Is it possible to swap backs with another system and see if it follows the sensor and mounts?It's so symmetrical, could excess light be getting into the system from an exposed accessory port?We would see a similar reflex to this on our Topcon EX occasionally with the Astig correction when we had to crank the flash up (small pupil etc). I assumed it was flare coming back thru the system and being scattered by the astig. Rare enuf to not be a real issue for us.One other thought: could it possibly be flare within the system where, as Paul eluded, an extension ring etc might have poor QC and be missing antiflare coatings, or even a haze on an internal lens element (IR cut filter on sensor?)j-
by
Tuesday, June 12, 2018
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