This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
The light from the UV light curing unit can cause: 
Select and explain. 
A. Iritis, B. Cataract, C. Retinal damage, D. Corneal ulceration
C: Retinal damage
Answer: C: Retinal damage 
Explanation: None