This is for information sharing:
I saw the rheumatologist a couple of weeks ago and was referred for OCT (Optical CT to be done at the Eye Hospital), which apparently is a recently developed strategy to check for retinal damage caused by Hydroxychloroquine, that wouldn't be picked up by retinoscopy done by an optometrist. I think I was referred because I've been taking HCQ for more than 5 years.
The rheumatologist also weighed me and reduced my dose down from 200mg twice daily to 200mg twice daily/200mg once daily alternate days, ie effectively 300mg/day. Sadly, there isn't a 100mg tablet so I've had to buy a small dosette box so that I don't have to try and remember what dose to take each day!