Only video on the net that boosts you with the confidence that you can also do it. Thanks sir for uploading such great educational content so that it reaches to all who need it.👍
This is a fabulous lecture - thank you! I realized that I have been making things much too complicated for myself! Can't wait to return to work on Monday and try these techniques!
@@medicogivemered9221 because the angle of the with motion is 1/2 the distance between 90° and 180° which is what you always start with. If there is a phoropter present then check the angle compared to the phoropter.
You're correct. The eye always accomodates if the ciliary muscles are not paralysed. That is why we do retinoscopy under cycloplegia- by using either 1% atropine eye ointment or 2% homatropine eye drops.
These are fantastic videos- simple, easy to understand and creative. I have a request. Could you make a video of neuro-ophthalmology specifically dealing with pupillary reflexes and their related abnormalities? Meanwhile, thank you for your wonderful contribution.
thanks for the lecture it help recall knowledge God bless and hope you continue to reach out people. its my pleasure to be one who benifit for it. good luck
Thank you so very much!!!! This was holding me back from my COT test!!! You are a gracious human being and a life saver!! If you were local I would bring you my famous Sopapilla Cheesecake ;). God bless you, Sir!
That was an awesum lesson,all doubts about astigmatism cleared out after watching this.would really appreciate if a lesson for jacksons cross cylinder test is uploaded
Great lecture!!!! I work for a large ophthalmology practice, however, since we do have O.Ds in our practice as well, we work in minus cyl. I'm assuming that after you acquire the correction for the patient, then subtract working distance, I would have to do the additional step of transposing the Rx? Is there any quicker way to do this?
Uff i am highly impressed. It was such a simplified version yet so helpful. Thank you sir. I am going through all your videos to add up my knowledge. Love :)
In the UK with use of -ve cylinder lenses, I reckon we then say that the movement must be AGAINST in all meridians as the first step, instead of the suggested 'with'. By doing so, one meridian will be slightly against, and one very against. The slight against will be neutralised first, leaving an against movement in the other meridian. Since against requires a negative lens, a negative cyl can be used.
it is very helpful of 3rd world country like Bangladesh my fist year i always see this video clip & more Practice see more patient I know every thing...thanks Ahad -optometrist Bangladesh...
Hi , it was a great presentation , however I had a doubt about the writing of the prescription regarding the astigmatic error We've been taught to write DS and DC separately and deduct the distance error from both and writr the angle post DC to define the axis of tilt, but in the video you mention writing the powers together subtracting DS and DC and subtracting Distance error only from DS ; what is the latest rule (if there is ) regarding this ?
Hi Dr Tim Root. Thanks for the nice explanation but I'm confused about how you got a positive cylindrical power in the 3rd example, while I got it negative?? :/
thank you so much for teaching us this very useful and fabulous method. it's matter me lot. can you suggest me the which light i have to take for this examination? because i don't know exactly.
At 11.36 it's meant : plano sphere, +1.50 cylinder at 180 not +3 like the other examples that you have mentioned we subtract the working power distance only from the sphere ?
I have one question regarding the cylinder power. You have already given example i.e first meridian neutral with -3.00*90and second meridian neutral with -1.00*180 so we write it as -3.00/+2.00*90 and then subtract the working distance -1.50D from spherical power .then it will be -4.50/+2.00*90 ..so my question is why cylinder is +2.00 why not -2.00
usually the lower values in diopteric power is preferred as sphere. But you can choose any one as sphere. at the end you can transpose the values if you want minus cylinder lenses, as making minus cylinder lens is easy compared to plus cylinder lens.
I'm a bit confuse. In some tutorials, the cylinder should also be rotated together with the light while in this video you just simply use another sphere and then rotate the light. Can you help me? I'm new in retinoscopy.
sir i cant understand how u calculate cylinder power by using spare power can plz tell the calculation method how u get a cylindrical power from spere power
Great teaching skills. Appreciate the simplicity of your talks. We In India give our cylindrical power in minus powers. Still great rules to follow for beginners till the mental math happens automatically.. Patients with correct prescriptions always appreciate it and are your patients forever.
he use plus cylinder retinoscopy which mean he correct least plus or high minus merdian first ( always start with with ) and consider it sphere then correct 2nd merdian which more plus or less minus by subtract 2 power but the sign should be postive even if mathamatic is negative so it is called plus cylinderl retinoscopy
