DUOCHROME TEST || BICHROME TEST|| RED-GREEN TEST||

DUOCHROME TEST || BICHROME TEST|| RED-GREEN TEST|| REFRACTION SERIES - Dr AMRIT
This video talks about the important concepts of the duochrome test.
it explains the important concept of "over plus and under minus" and why is it done in the spherical endpoint verification. It explains what is meant by chromatic aberration and how is it used in duochrome testing. What is the chromatic interval of a duochrome chart? why does patient prefers a particular colour chart in duochrome testing?
what are the steps of the duochrome testing?

what are the limitations ? whether it can be done in colorblind patients or not ?
it expains the MNEMONIC ; RAM-GAP in duochrome testing.

#refraction
#dramrit
#insightophthalmology

||Links||

||Types of astigmatism ||
   • ASTIGMATISM || REGULAR ASTIGMATISM || with...  

||Understanding astigmatic prescription||
   • Decoding Your Astigmatic Prescription made...  

||Sturms conoid and applications||
   • STURMS CONOID || APPLICATIONS AND CONCEPT ...  

||Spherical equivalent ||
   • SPHERICAL EQUIVALENT Of EYE ||OPTOMETRY  

|| Astigmatic DIAL ||
   • ASTIGMATIC DIAL TEST ||OPTOMETRY  

||TIMESTAMPS||

00:00 verifying the spherical endpoint
01:20 why least minus and most plus?
06:41 why leave myopic rather than hypermetropic?
07:44 chromatic aberration
10:55Which color is preffered and why?
12:41 What is duochrome chart?
13:13 What is chromatic interval?
15:27 Steps of duochrome test?
21:19 RAM-GAP mnemonic
23:50 Limitation
24:24 Can it be done in colorblind?