|
|
|
|
|
|
|
|
|
|
| In
addition we can make the images flash on and off |
|||||||||
| and
this improves the discrimination of disease. |
|||||||||
| We
measure colour sensitivity along colour confusion |
|||||||||
| lines
for congenital protanopes and tritanopes, and thus |
|||||||||
| measure
minor and major axes of the MacAdam elipse |
|||||||||
| We
have sophisticated techniques for finding the |
|||||||||
| colour
contrast thresholds in normal people and in |
|||||||||
| patients. |
|||||||||
| The
images we use are simple and easily recognisable, |
|||||||||
| as
shown in the following images. |
|||||||||
