Order of random effects in a LME model

I am building an LME model with random effects. My 2 random effects are 'Patient ID' and 'Eye ID'.

I need to nest those 2 random effects because every patient has several visits (is a longitudinal study) and every patient at each visit has 2 eyes. So my question is, in which order should these random effects be nested:

a) ~1|EyeID/PatientID

b)~1|PatientID/EyeID

Thank you very much in advance,

Best regards,

Lili