Duochrome Test

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A duochrome test is a test commonly used to refine the final sphere in refraction, which makes use of the transverse chromatic aberration of the eye. Because of the chromatic aberration of the eye, the shorter wavelengths (green) are focused in front of the longer red wavelengths.
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#optometryacademy #duochrometest #redgreentest #friendtest

[@zaynmybf3197]

RAM and GAP( If Red more clear Add Minus, Green clearer Add Plus)

[@lucylixiang]

This has been so helpful! Literally was confused with the optics behind it and this has cleared everything up for me. Thank you so much :)

[@OptometryAcademy]

Thank you 😊

[@easyway5440]

Sir...I'm studying optometry...
This video is Soo much helpful for optometry student.....
We need more videos Sir ...😊😊

[@OptometryAcademy]

I made this channel only for optometry.😊

[@darsanadevendran1496]

I am also an upcoming optometrist 😇😇😇

[@rajilakshmi4156]

I am also..studing optomery.🧐☺️

[@opticalsworld2393]

Sir diagram k sath aaj bilkul clear samaj aa gya duochrome test

[@sarjilsarjil9252]

Very useful video thank you so much sir 💯

[@sarjilsarjil9252]

Hi sir ,
Sir please make a video on Refraction , how to do refraction, easy method Sir please waiting for your reply

[@yarramalarishitha4121]

Very clear explaination

[@OptometryAcademy]

Thank you ☺️

[@rameshkumarca]

Very nice presentation 👍👍👍👍

[@OptometryAcademy]

Thank you sir ☺️

[@athiras8712]

So use full , go ahead 👍👍

[@beenusaraswat529]

Nice presentation

[@rabindranathbiswas3329]

Like the presentation thank you sir🙏

[@poonampriya3314]

Good work :)

[@sososwsw711]

👍👍❤thank you😘

[@easyway5440]

Each point is clear....😊😊

[@SHAILENDRASINGH-qv8tl]

Nice presentation in minimum words.

[@OptometryAcademy]

Thank you so much sir

[@sofiqulislam2972]

Sir,,, this video is so so and so much #valuable to me.. Thanks a lot sir.......
........

[@OptometryAcademy]

Thank you ☺️

[@easyway5440]

To see this video... I'm the biggest fan of you 😊

[@OptometryAcademy]

Thank you sir ☺️

[@drarshadasim8845]

Good & beneficial video

[@OptometryAcademy]

Thank you :)

[@nadiajaber2823]

Why not blue in duochrome test, waiting for ur answer plz, thx

[@OptometryAcademy]

Eyes are more sensitive to green color than blue one.

[@siva4193]

Sir, I have one doubt.. in duochrome test, if patient says that the red letters are much clearer than the green letters, then the patient is ?
Over plused (or) Over minused.

[@OptometryAcademy]

Over plused

[@siva4193]

@@OptometryAcademy for how sir? We can add plus lens for green & add minus lens for red.. then, it undergoes for overminused? You says overplus, how is it possible sir? Can you explain briefly sir

[@OptometryAcademy]

Patient says red better mean he / she is in myopic state. Means Rays are focusing in front of retina. we make patient myopic by adding plus lens. That's why here overplused

[@UshakVideos105]

Hello sir jase ki apne kha ki Red better ya clear dekh rha to -0. 25 add karenge.

[@mariammal6608]

First of all that patient detected before refraction myopic or hypermetropic.... And then decided over corrected and under corrected..... If patient is myopic, patient says red is clear, this patient is under corrected so -0.25 added...... If patient is hypermetropic, patient says red is clear, this patient is over corrected so +0.25 reduces......

[@adityamistry9291]

wow

[@siddhantbalmiki1094]

thans ,very helpfull

[@mrtv6068]

❤

[@user-jp1bh6iq2o]

Super

[@OptometryAcademy]

Thank you ☺️

[@hinditoontv4319]

Informative :)
#optometryacademy

[@Shiva-nr6mm]

Why not blue in duochrome......?

[@OptometryAcademy]

Eyes are more sensitive to green color than blue one.

[@sikanderafridi3517]

Thanks sir

[@PVN7]

If the subject vision is 6/18, can we perform duochrome test????
Waiting for your reply.Sir

[@OptometryAcademy]

duochrome test is not used with patients whose visual acuity is worse than 6/9.

[@PVN7]

@@OptometryAcademy Thank you sir for your reply.
Please tell me the reason?? Sir

[@OptometryAcademy]

because the 0.50 D difference between the 2 sides is too small to distinguish.

[@PVN7]

@@OptometryAcademy Thanks a lot Sir.

[@georgekuria9119]

no because the 0.50D difference btwn the two sides is too small to distinguish