Welcome to the beginner OCT module! If you have any questions or comments on specific images, post them here with the question ID # (found at the bottom of each answer explanation).
Besides the location of the fluid, another way we were taught to differentiate between a PED and SRF is by the angle at which the layer is deflected. The RPE is very strongly attached the Bruch’s, and because of that, it is more likely to have a steeper angle of separation (this figure is a great example, it forms an almost 90 deg angle where it separates!). The RPE and PhRs are not as tightly bound, so you have more of a sloped, not as clear cut angle of separation between the layers. Might be too detailed, but I always consider those characteristics when deciding whether it’s a PED or SRF! 🙂
Thanks for the question. No, the ILM does not usually get peeled off with the posterior hyaloid. If the attachments between the condensing vitreous and the ILM are strong enough to pull off the ILM, the rest of the retina would likely also follow, causing a retinal tear or hole.
Why are some drusen almost isolucent with the choroid (#425), whereas others appear hyperlucent (#424). Does it have something to do with the relative composition, or age, and does it have any prognostic significance?
Hi Logical. The drusen in #425 and #426 are likely fairly similar in composition. The drusen in #426 are slightly brighter due to artifact from the hyperlucent RPE immediately anterior.
There are a few subcategories of PED – drusenoid, serous, and vascular. So technically calling a large drusen a PED wouldn’t be wrong, but you would be more accurate calling them drusen
Glad you are learning! There are very small drusen at the far left of this scan in the temporal macula. As you follow the outer retinal layers from right to left, you will notice they get slightly irregular all the way to the left. for the last ~1/8 of the image
Hi, I cannot see any fluid on the OCT which would indicate that this patient has diabetic macula edema. Could someone please point out the features of the OCT scan that show this patient has diabetic macula edema? Many thanks.
Welcome to the beginner OCT module! If you have any questions or comments on specific images, post them here with the question ID # (found at the bottom of each answer explanation).
Thankyou very much Sir for such a nice initiative.
It’s very informative and accurate.
Thanks
ID#331
Besides the location of the fluid, another way we were taught to differentiate between a PED and SRF is by the angle at which the layer is deflected. The RPE is very strongly attached the Bruch’s, and because of that, it is more likely to have a steeper angle of separation (this figure is a great example, it forms an almost 90 deg angle where it separates!). The RPE and PhRs are not as tightly bound, so you have more of a sloped, not as clear cut angle of separation between the layers. Might be too detailed, but I always consider those characteristics when deciding whether it’s a PED or SRF! 🙂
Great point, Jamie!
Excellent point. Thank you!
@Jamiewang that helps!! TY
Great learning experience for a beginner! Thank you
Thanks, Joel!
Thank you so much nice tips !
Thank you
Thank you!
thank you!
This is a great refresher course as an OD. THanks.
Thank You !
Thank You !
How to read octs
thank you very much for the explanation to understand better.
Great educational tool – thank you for having this
Great quiz!
thank u for this site
Excellent refresher tool! Thank you!
Thank you!
very good
Thanks
Thank you
Learning
Amazing
Good experience
Great experience
Great
Great
Great!
Great learning experience 👍
Very nice simple informative picture ……..thank you for your nice work …..waiting for examination
great tool
ID #459: Answer explanation appears to be for hard exudates when the image shows intraretinal fluid 2/2 BRVO
Thanks for pointing out that error, hypotamus. Just fixed it!
Awesome resource for developing familiarity with OCT imaging! Thanks!
Happy to hear it’s helpful!
Thank you! Very useful tool!
#319
Does the ILM get lifted up along with the condensed vitreous face?
Thanks for the question. No, the ILM does not usually get peeled off with the posterior hyaloid. If the attachments between the condensing vitreous and the ILM are strong enough to pull off the ILM, the rest of the retina would likely also follow, causing a retinal tear or hole.
Why are some drusen almost isolucent with the choroid (#425), whereas others appear hyperlucent (#424). Does it have something to do with the relative composition, or age, and does it have any prognostic significance?
Hi Logical. The drusen in #425 and #426 are likely fairly similar in composition. The drusen in #426 are slightly brighter due to artifact from the hyperlucent RPE immediately anterior.
More OCTs please, it’s educative. Thank you
Glad you like them! We’re working on expanding these and our other OCT modules to include more examples and more variety.
Thank you
ret
Great exercise! Expect more clinical cases.
Very informative quiz
Excellent representation of common retinal OCT scans , Thank you.
Excellent
will this be available in Anki decks soon? 🙂
Hi Michael, we’re working on some image-based Anki decks as well. Stay tuned!
this was a great review thank you.
Thank you very much!
very great
ID 325
This appears more like a PED than CSR but correct me if I’m wrong.
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Well
Great
drusen
Irf
Great
Good
Excellent resource and quiz. Thank you
Fantastic work.
Excellent work!
This is clearly a labor of love.
Excellent work
Thank you for the educational experience!
Good
👍🏻👍🏻
I keep getting an error when I submit on multiple attempts:
WATUPRO_CAPTCHA:::No answer to the verification question
I have been trying to do a set of 10 on beginner OCT module
Thanks for pointing out this bug! This has now been fixed
👌
In case of large Drusen is that wrong to say PED?
There are a few subcategories of PED – drusenoid, serous, and vascular. So technically calling a large drusen a PED wouldn’t be wrong, but you would be more accurate calling them drusen
firstly thank you som much for this education !
with regards Question ID 440 “small macular drusen” – can you please specify where that feature is on the OCT ?
Glad you are learning! There are very small drusen at the far left of this scan in the temporal macula. As you follow the outer retinal layers from right to left, you will notice they get slightly irregular all the way to the left. for the last ~1/8 of the image
good explaination and good pictures, very useful
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Excelente
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New on the platform
That is a good course !
great reviews to return to
thank you for providing such a good examples.
Very nice and simple
I gained a lot in just few minutes 😃
Amazing resource. thanks for being a blessing.
Nice intro
excellent and very good course.
i’m beginning to get it 🙂
Good quiz
You are an educational pillar, thank you
It took awhile for the images to load but they are very helpful. Especially the explanations in the end. Thank you!
Very useful
thanks
This is exactly what I needed to boost my OCT confidence. Thanks.
good stuff
Very informative
educational
RPE
thank you very clear and great study material
Thank you, great work
Very useful
Thanks
Informative
excellent
Very good platform for learning purpose
VERY INTERESTING QUIZ THANK YOU FOR THE KNOWLEGE
no comment
amazing, any course regarding explanations ion how to evaluate oct?
Great!
So helpful
Great
oct
good
Very useful for me as an ophthalmic technician
We need more cases
An excellent way to learn new skills
great!
Appreciate the diagnosis of the retina along with the anatomy lesson
Excelente
very informative
Great experiance
K
G
As a beginner, I have found this very helpful. Mistakes will be corrected as time goes on.
Interesting
Really helpful!
zzzz
Loved it, learned a lot!
AMAZING
Nice questions
useful
Good starter
Thank you
I am new to OCT and this quiz has been very helpful
Thank you
Excellent way of demonstrating OCT.
I love these questions! Such an efficient way to learn.
Question ID 505 seems to be missing the corresponding fundus imaging. Either that or my browser is it hiding it from me!
Thank you
good
Nice
Thanks a ton!
Its realy help full
very helpful
kingbet303
This is an excellent site for anyone who is interested in learning OCT.
THANKS
Thank you ❤️
Hi, I cannot see any fluid on the OCT which would indicate that this patient has diabetic macula edema. Could someone please point out the features of the OCT scan that show this patient has diabetic macula edema? Many thanks.
I like it so far!
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Thank you
Great practice questions