A hospital in Beijing. A 50s patient had a tooth extraction in the afternoon, who has a history of being diabetic. The dentist did the tooth extraction after injecting the primacaine adrenaline. After a few days later, the patient had visual loss.
Cautions:
1) As a diabetes is prohibited to do the tooth extraction in the afternoon, because their tend to have high blood sugar in the afternoon
2) Primacaine adrenaline contains adrenaline, microvascular contraction causes insufficient blood supply to the retina of the patient, affecting vision.
Find a safe way to use primacaine adrenaline:
Slow injection, not multiple injections; the amount is not much, otherwise it will cause tissue necrosis. High blood pressure, diabetes, cautions.
Ref: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4436236/
