This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lens, Subject name: Ophthalmology
UGH syndrome is commonly due to 
Select and explain. 
A. ACIOL, B. PCIOL, C. Several fixed IOL, D. Piggy back IOL
A: ACIOL
Answer: A: ACIOL 
Explanation: Ans. (a) ACIOLRef: Cornea by Mark J Mannis/p. 196UGH syndrome is caused by mechanical excoriation of the iris from an IOL haptic or optic that results in uveitis, glaucoma, and hyphema.It is most commonly due to use of ACIOL, though it can also be seen with use of PCIOL (if a malpositioned haptic is present).