Eyebright is an herb that grows in Europe and North America. It has been used to improve eye health. It can be taken as a pill, powder, or used as eye drops.
There are no advised doses for eyebright.
Editorial process and description of evidence categories can be found at EBSCO NAT Editorial Process.
It may be safe to use eyebright. It may also be safe to take aloe orally for a short time. Not enough studies have been done to say whether it is safe to use for a long period.
Talk to your doctor about any supplements or therapy you would like to use. Some can interfere with treatment or make conditions worse.