What's your recommendation of check ups/screening on normal child with high risk (eg myopic parents) in terms of frequency, and which specialist (optician vs ophthalmologists) ?

My cousins are both myopic and thankfully their 5 year old daughter does not seem to exhibit any signs of childhood myopia. They are quite strict when it comes to habits relating to the eyes eg frequent breaks after computer usage. What I found striking and I think contribute to their daughter's eye health is that they keep their daughter busy with outdoor activities like sports and nature.