41 Comments

  1. Is it not called entoptic phenomenon rather than photoptic phenomenon?

  2. Yep, the “entoptic phenomenon” it is. I couldn’t remember the name or find it anywhere online when I prepared the lecture. It has also been described as the “Troxler’s fading phenomenon.” Thanks for the comment!

    1. I learned it as “Purkinje images” or more more accurately as the “Purkinje tree”. Love your lectures!!! Thanks so much!

  3. Anil Ratnayake says:

    Its wonderful very vital info thanks so much

  4. seen it all now just took a lot of time to load. Thank you soo very much

  5. Where might I locate the latter 2/3 of the presentation? Has the remaining portion of this presentation benn published anywhere?

  6. Hi Dr. Root, can you please post the other two videos as well? I love your teaching style.

  7. Amanne Esmael says:

    excellent work
    I need your permission to use your anatomy video in my class at the ophthalmology department, faculty of medicine, Cairo university, Egypt.
    I must congratulate you on the innovation, dedication and your teaching style. very inspiring indeed.
    wishing you all the best and thank you.

  8. Great lecture – thanks

  9. hey doc, amazing videos———could you please post the other two videos ???

  10. Great video- thanks! You have an excellent gift for teaching. I believe the photoptic phenomenon you mentioned is called the troxler effect.

  11. I’m looking forward to buy your book in order tu support your hard work.

    All the stuff published here is extremely useful, and i really aprecciate it.

    Thanks to all the people who made this!

  12. HAHAHAH HE IS SO GOOOOOOOOOOOOOOOOD!!

  13. Great stuff – I plan to study medicine and wouldn’t have particularly have gone to Ophthalmology but I am glad to have come across it. Interesting and fun stuff.

    @Miss Marlene M.D – it is very stupid to post your site on this one promoting a subscription service for Medical Advice. Not only is it annoying, it promotes self diagnosis which in most cases can and will lead to further problems.

    Respect this as an Educational free source of information.

    Great stuff.

    Regards.

  14. many thnx ur way is amazing thnx

  15. philantoo says:

    Goooood job. Excellent doctor.
    Madagascar

  16. More grease 2 ur elbow.u’re doin gr8t. It’s educative,informative etc.thanks

  17. Need some contact lens lectures,….

  18. Dr. you know your truly great! I wish your one of my professor you did an excellent teaching skills, its easy to understand and remembered. Your videos really really help me a lot, for me your much easier to understand than books..Please post more videos in the future. I’m so happy to find your website. 🙂 thanks a millions….. keep up the truly helpful works.

  19. Clive Novis says:

    Taught me a few tricks and I have been practicing ophthalmology here in South Africa for 20 years!

  20. Dr.Moazzam Khan says:

    Excellent Work snd
    very Informative.

  21. thank u so much sir for making download possible. u r great. heartly thank u…

  22. Ngozichi Omekara says:

    Great lecture,thanks for sharing,you are a an excellent teacher. I also think it is Entopic phenomenon, not photopic

  23. hi,
    i love your lectures and your teaching style
    i have given the presentation on anatomy of eye and retinoscopy in my clss room in front of my all senoir teachers and i got help from your lactures.
    my all teachers liked my presentation and i got fully marks how i tell that to which extent i was happy just sying thank u de tim root thanks a lot.
    uzma sattar
    2nd yr optometry student
    king edward medical college

  24. thanks for sharing
    nice topic

  25. love it! Amazing, it’s so easy to learn a lot from your lessons!and have a fun as well…

  26. i love all your lectures n good effort
    .., if u come to CHENNAI i’ll surely meet u up:):):):):)

  27. Somaya Diyab says:

    Learning while enjoying is really great,and this is exactly what u gave us, Thanks a lot,

    Somaya from Egypt

  28. Arun Dudani says:

    U have truely amazing teaching skills Dr. Root sir! ophthalmology was never so easy ..will definetely buy your book as appreciation and respect! Please do visit India ..

  29. Loved this one. So quick and easy!

  30. Great lecture. Thanks a lot.

  31. Excellent work, very useful information

  32. This is very good. Thank you so much.😁😁😁😁

  33. The greatest ophthalmic lecturer ever

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