Welcome to the R.E.N.

Thank you for visiting my website. Please leave a comment if you have questions (or just want to say hello).

Its a capsule of knowledge. When a book is so simple to read and understand we must appreciate the tremendous effort of the author, the master teacher. A salute for his efforts.And thank you so much.

Ramu,
A Medical Student,
AIMST UNIVERSITY,
MALAYSIA.

Thank you Ramu!

THANK YOU SO MUCH DR.ROOT!! GOD BLESS YOU ALWAYS.

Big big thanks for your efforts ,really appreciate you talent.
Everything you produce is different and simple and very helpful
Thank you Dr. Root

I love this website, Ophthalmic Tech graduate and this site is the BOMB!!!

Dear Tim,
For second time, I must give you my deepest THANK YOU for your smart contribution to trainees, where I’ll always belong!!
And thanks for that kind of humor sense, that we all allways need

No problem! I’m here to help!

Could you tell me what the meaning of “Plano” and Rx in glasses prescription, pls?

Luv ur ophtho book Mr.Root..waiting to download ur root dictionary..

Dear Dr Root,
We are completing the development of an educational “App”, which will be used to educate ophthalmologists on which laser modality is best suited to which type of patient and which type of glaucoma.
We would like to ask for your permission to include your excellent educational video on “How to perform a Laser Iridotomy” to illustrate one of the laser (by respecting your copyright stipulations).
Could you sent me an email so that I could give further details about this app?
Thank you very much in advance,
Sincerely,
Aurélie

@PHAN DANG LONG: “Plano” means zero glasses prescription (clear glass). “Rx” means “prescription” and is commonly used on prescription pads of paper.

To better understand the components of a glasses prescription, you may want to watch my Introduction to Optics lecture. Thanks.

@Aurélie: I emailed you about the LPI video but I can’t tell if you got it (got an out-of-office message emailed back).

Dear Dr. Root

I simply wish to say superb to your work. Your written lecturers and videos are like oxygen to our understanding of so many misconceptions that at least I was carrying. In fact I have learnt Retinoscopy and many more techniques to find out refractive error through your videos & lectures.

I am receiving free education from you and in turn I gave a (one year) free education to a needy unknown (to me) girl. Please accept my deepest and heartfelt thanks.

Optom (Intern) Anant Vikram Lakhotia

thankyou sir..

@AnantVikramLakhotia: That is fantastic and inspiring to hear. I feel honored to make that kind of impact on anyone. Keep up the good work. You are helping to make the world a better place!

I need to learn how to retinascope!!!

@Judy: If you haven’t seen my retinoscopy lecture, you’ll find it here:
http://www.ophthobook.com/videos/retinoscopy-lecture-video

I gave this lecture using “positive cylinder” common in ophthalmology practices. If you are in the optometry world and use “negative cylinder” it won’t be as useful. Good luck.

Thanku so much for this great work..keep it up doc!

hie? can you please send me videos on how to use the lensometer and slip-lamp via my e-mail.I am having some difficulties with them.

Alexx, both the lensometer and slit-lamp videos are quite large (too large to email). There is a download link on each of the video pages, however. If you are using windows, just “right mouse click” on the link, and choose “save as” to save the files on your computer. Good luck.

Dear Dr. Tim

Though I have learnt retinoscopy through your video and lecture there on positive cylinders. I would very much appreciate a similar video on -ve cylinder as well.

In India I see major number of refractive error’s result in Myopes. Hyperopes are too little in number compared to Myopes. A lecture is needed by me for better understanding.

Thanking you
Optom Anant Vikram Lakhotia

Anant, I’m not planning on creating a minus version of my retinoscopy lecture … that lecture took me months to create, and I’m just not smart enough to turn my mind backwards and give the same lecture using minus cylinder (I wouldn’t have the time without quiting my day job).

I HAVE seen a retinoscopy lecture given in minus cylinder before. It was a video by the famous optics ophthalmologist Dr. Guyton. He created two videos … one in plus, the other in minus.

Here is a link to Dr. Guyton’s video on minus cyl. Naturally, it is insanely expensive:
http://store.aao.org/retinoscopy-and-subjective-refraction-dvd.html

Someone uploaded the PLUS version on Vimeo here (not sure about copyright of that) to see what it looks like. Personally, I like my retinoscopy video better … but I am biased and Guyton’s version is technically more accurate in how it’s explained. Good luck in your search, and if you find a great minus-cylinder lecture online, let me know!

Dr.Tim, Thanks for a fast answer. I have been looking for what I asked you for a long time but without success. Though I thought – with your expertise you may just add few mins of videography in your existing loose lens retinoscopy video.

Dr.Guyton’s version is expensive and beyong my means. I may sound selfish if I still wait for your version on the topic, but I will have to wait or gather my own experience.

If I do it myself I will surely share my understanding with you. Thanks a ton.

@Anant: I just found the minus cylinder version here. Hope that helps!

hello
your website is excellent

Dr. Root,
Thank you so much for your videos. I am a third year medical student who recently had my ophtho elective. Watching your videos and some cataract surgeries made me love this field. You have made some great videos and I can’t thank you enough for introducing me to this field. My sincerest thanks.
If you have any advice for me in terms of ophtho residency and the future, I would love to hear from you.
Thanks

Thank you so much for all of your info.
Becoming a tech as a 2nd career and late
In life would not be possible without your
help. My OMA course was fair at best so
you saved me. I am forever grateful.

@Anon: Glad to hear you’ve chosen ophthalmology as a career. Every field of medicine is tough, but I’ve personally found the eyes fascinating and the practice (especially cataract surgery) fulfilling. Good luck in your endeavors.

dear Dr.root
I am very glad to find your website in my first year of ophthalmology residency. your work is so great and I hope to find more videos in your website.
kind regards

Dearest Dr Root
Your website has been the go to resource for visual learners on our unit. Its been a honour to have found this jewel which not only imparts clear, consice information but also ensures the accuracy of its content.

Thank you for taking the time out to put this valuable ocean of knowlwdge together; I guess that goes to say that actions governed by right motivation ie. empowering pateints & students with FREE education, brings greater abudance of gratitude & success……

Merci Beaucoup

Dear Dr. Root
Thanks for the information on September 11, 2013. I checked the video. I would still love to have it from you only. The video lecture somehow appeared to be incomplete.

Dear Dr Root thank you so much for all this informations just if you can make a lesson about the PLRD(predispose lesions of retinal detachment);thank you again.

Hmm … maybe some day. I’ve never heard of the abbreviation PLRD. Probably won’t be doing much on that soon … right now I’m focusing on EyeTalkRadio episodes. Thanks for commenting!

Dr Root, we learn in french, so there is an abbreviation: “LPDR:lésions prédisposantes au décollement de rétine”may be i’m not a good traducter but i think that you understand me.Thanks.

Great work Sir ,i realy impressed and learn alot of things from your lectures ,Alot of wishes for ur furthur success..
May you live long..

great work sir,i had few queries regarding pattern of vortex keratopathy.can you please send me some explanation regarding why whorls are formed in such keratopathies and how diagnosis can be confirmed..thank you sir…

Dear Prof.
Thanks for your great effort
I’m from Egypt ,all your videos are being showed here
you are the best,we hope more by ALLAH’S will

@TARUN: I’m not an expert at corneal keratopathies, through a certainly see a lot of amiodarone whorl/vortex keratopathy in my practice. You can find one of my videos showing this here.

You may want to run a google search on “xyz hypothesis of the cornea” to learn why these deposits form in this pattern. Good luck!

Dear Dr root
Thank you so much for your great help on our Young ophthalmologists. since the day i searched one of your video, i keep watching all your video every day repeatedly. you explain the difficulty thing in a very EASY way, what i learned from your video and your book is far more than my last 3 years. i am so grateful to you, i want to say thank you to you

Dear prof.
Thank you so much for your great efforts.
ophthalmology with you is very easy so i suggest to make a lecture about investigations especially corneal topography and oct; if you have free time
Thank you

Dr Root,
I’m new to your news letter.I really want to say it’s a privilege knowing there’s someone out like you to help upcoming optometrist like I am.Please sir I just got into an optometry school and I need you to help me out with the various lectures you think I should get started with and growing with in my profession. My friends need to know why I do exceptionally well in class and I’ll be glad to introduce my prof to them. Godbless your good works Sir, I await your response to get myself started.THANK YOU!

@M.Fouad – thanks for commenting. not sure if I’ll ever get around to corneal topography or OCT, but maybe someday.

@Martins – thank you for commenting and hope your optometry studies go well. I’m not sure what the most appropriate lectures you’ll need for your studies, but I’m guessing my intro to optics and slit-lamp exam lectures would be a good starting point.

Absolutely fantastic. As a patient trying to understand what has happened to my eyes, I have found your explanations, videos, etc. invaluable. There is simply not time for a medical professional to begin to explain the complexities of ocular movement disorders during an exam. Thank you very much for what has to have been, in no small part, a labor of love!

I’m a italian graduate student in ophthalmology (fourth year)
Thank you so much for your great efforts!!!!

Dear sir,
I am very happy to see and enjoy your books and website.
And now, I am searching the low vision topic. Would you like to send me some information about the low vision, logMar chart and how to use it. Thank you so much. I am looking forward to you.
Best regards.
PHAN DANG LONG

Thank you for your great informations We expect more

Hi Dr. Root,

Question: Could a Restor lens implant that was not properly stabilized, (missing zonules), cause a feeling of a foreign eye sensation at approx. 3:00 in the eye? Evidently lens was loose.

Norma, I doubt that your Restor implant is causing a foreign body sensation. There aren’t really any sensory nerves inside the eye, other than some nerves in the iris. Inflammation of the iris can sometimes occur if the implant is rubbing on the back surface of the iris … but in my experience, this kind of “iritis” causes more eye ache and sensitivity of light.

More likely, you are suffering from post-surgical neuralgia. This is common and hopefully will improve with time as the corneal nerves heal. Ultimately, however, these are better questions for your surgeon or another eye doctor who can look at your eye under a microscope.

Thank you so much I almost feel guilty watching and reading all this for free :O You gotta great sense of humor too! Hats off Doc!

Dear Dr. Root,
Thank you so much, sir for these wonderful video lectures. Thank you for all the efforts you put in. i hope apart from becoming a good doctor, I am also able to do something like this in future.
Tasqeen Momin

Thank you thank you thank you for speaking plain English! You have eased my own study induced headaches hahaha

Dear Dr Root, You are such a great teacher! Thank you so much for your great efforts. I will definitely recommend your site to my colleagues!

Thank you so much for your amazing web site. It is very easy to understand.
Just wanted to say that everyone here thanks you for the useful material and I shall say A MASSIVE THANK YOU TO YOU FOR THIS GREAT SERVICE TO ALL STUDENTS AND DOCTORS.
I am a medical student and actually I was told about your website by an Ophthalmologt specialist who found your treasure and loved your work.
Could I just add that you are VERY VERY VERY GOODLOOKING AS WELL ! This is something that not anyone has appreciated but I do !
May you stay young , happy , healthy and gorgeous forever Doctor xxxxxxxxx

I am glad to be a part of this and can’t figure out what may be causing neuro-toxicity. My Superior Oblique muscle constantly twitches and the pupil of my eye constantly gets slightly bigger and smaller for no reason. It is not related to the light or moving my head. It is just continuous I also have weakness I my arms and legs. The neurologist said I had Superior Oblique Myokemia and the MRI shows the old head closed head injury of 1985 that put me in a coma for 2 weeks. I need to find a specialist that will do all test to rule out other medical problems that can cause this. But I am glad to find this Web site.

Thank you very much!The best teacher ever!

Hello dear doctor I’m biggest fan of yours.your work helping me a lot. thanks.I need to know how to do jcc practically.

hello doc i may have done something wrong as i have not been getting anything for months on the page where people talk about this unless they all got cured and i am the only one who hasnt thanks matt

Make an app

Great website! I absolutely love all of the very detailed information you provide. Thank you so much for your work! I look forward to any upcoming information.

hi doc i get nothin new for ages and i dont know what is wrong cept maybe the one page is to big make it into pages and it may help .. i hope i get new posts soon thanks matt

hi doc i still got no new posts come thru what have i done wrong here to get nothin thanks matt

HI DOC I AM NOT GETTIN ANY NEW POSTS ON THE SITE HAVE I DONE SOMETHIN WRONG I REALLY MISS THIS PAGE OK MATT CAN YA FIX IT

hi doc sorry bout this but i still got nothin new in posts on the site for a long time what can i do as i miss reading these thanks matt

HEY DOC CAN YA HELP ME AS I CANT ACESS THIS PAGE FOR WEEKS NOW AND I LOVE COMING ON HERE EVERYDAY BUT SOMETHING IS WRONG AND CAN YA FIX IT THANKS MATT

its still not workin for me doc what is goin on and how do i or you fix it thanks matt

comon doc help me will ya i miss not bein able to get the peoples feedback and stuff since february can ya help me thanks matt

hey doc i still get nothin new since february what is going on can ya help me as i love this site thanks matt

Where have you been all my life? I am a nurse at a mainly eye out patient surgery center and it has been difficult to educate new employees to this specialty. Thank you so much for your efforts! Stefanie

Thank you for all your nice and informative lectures ‘,l ‘d like you to introduce a lecture about squint on proffisional level

Very impressive – great webpage and content! Thank you and greetings from Linz, Austria

Excellent website! Contains very useful course material for the students and teachers. I have a question. Is there any difference between a Vision Care Clinic and a Vision Care Centre (Vision Centre). Thank you and all the best.

I just loved the book..
The way u explain it is awesome it helps me a lot in my clinical practice.thankq so much and looking forward to learn more n more …

your website and collection of videos and books are excellent , make us so much easier to grasp the ophthalmology. thank you so much. kamal shrish Butwal, Nepal.

Hats off to you for your effort,knowledge, sense of humour and last but not the least not being business minded.

THANK YOU Soooooooooooo much Sir.I’m so glad I found you.Your books and lectures are by far the most incredible.YOU ARE THE BEST SIR.Wish you a Happy,Healthy & Successful life Sir.Thank you soooooooooo much once again Sir.

i appreiate your your video teaching materials especially the slit lamp examination video because it really helped me in my c#2 opthLmology attachment and i hope your book which i wil start reading by today will also help me.finally i thank you for your devotion. Eskinder,from University of Gondar,Ethiopia

just want to say thank you to Dr.Tim Root.

This is fabulous, thank you for your time!