Hydroxychloroquine has lower toxicity and while it has side effects including sight loss these tend to only occur with long use (years to decades) and are mostly accumulative.

The current HCQ protocol for COVID-19 is a 600mg dose daily (within about the safe limits for a grown adult, however can be a bit high) for 10 days.

This isn’t a recommendation of any sorts however the side effects are likely to be mild and reversible for this type of usage.