Colour deficiency

[vicleecy]

Hi there,

I would like to ask what kind of colour deficiency test would CX carry out in medical check?
I have heard there are two kinds, Isihara and Lantern test.
I am not very sure about my situation because sometimes I can see the Ishihara chart correctly but sometimes some pictures appear dots to me.
What kind of colour deficiency/colour weekness will airlines accept? and some said if somebody can't pass the isihara test the doctor will give him a lantern test...So what is lantern test about?

Thanks for your answer as I have a bit worries.