Wikipedia says:

The ratio of M and L cones varies greatly among different people with regular vision (e.g. values of 75.8% L with 20.0% M versus 50.6% L with 44.2% M in two male subjects).

This made me wonder if other people then can perceive colors more or less green/red than me. But then I asked myself why do I perceive all colors similarly for both objects on my sightline and at sides (except 90+° from my sightline horizontally). Is that because the ratio of cone cells is similar on the whole retina (in one individual)?

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