Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Seek emergency care for sudden loss of vision, severe eye pain, a serious eye injury, uncontrolled bleeding, or major difficulty breathing.
These symptoms need immediate assessment whether or not you have OCA.
And for anyone, someone who:
Get urgent eye care for sudden flashes, many new floaters, or a shadow or curtain across your vision.
These can be signs of a retinal problem and are not expected features of OCA.
And for anyone, someone who:
Arrange a routine appointment if a baby develops persistent involuntary eye movements, does not appear to track objects, or has unusually strong light sensitivity.
Early eye assessment can identify focusing problems and support visual development.
The article also says
Seek a prompt, non-emergency review for:
A new or changing skin growth, especially one that bleeds or does not heal
Increasing difficulty with vision, glare, reading, or daily activities
New easy bruising, frequent nosebleeds, or unusually heavy bleeding
New breathing or persistent bowel symptoms in someone with possible syndromic albinism
Every sign above is quoted from the sofidex article on Oculocutaneous albinism. If you are not sure, err upward — it is always reasonable to be checked.