Hydroxychloroquine is a very important medication which is used to successfully treat a number of rheumatological conditions. However, it can also cause damage to the retina in the eye in about 7.5% patients.This can cause irreversible sight loss. To prevent this people taking hydroxychloroquine should be monitored by an ophthalmologist.
We now have modern, non-invasive tests which can pick up the earliest signs that hydroxychloroquine is causing damage.
Here is a patient information leaflet created by the macula society about screening for hydroxychloroquine retinopathy.
Macular Society Hydroxychloroquine Retinopathy Screening leaflet.