This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Retina, Subject name: Ophthalmology
All of the following statements are false except 
Select and explain. 
A. Very severe NPDR has a 45% chance of progression to high risk PDR within 1 year, B. Argon laser photocoagulation is contraindicated in cases of Ischemic Maculopathy (DME) if Foveal Avascular zone <1000 microns, C. Panretinal Photocoagulation for PDR should be done in a single sitting as it can lead to visual field defects, D. Aspirin at a dose of 650mg/day slowed the progression of retinopathy
A: Very severe NPDR has a 45% chance of progression to high risk PDR within 1 year
Answer: A: Very severe NPDR has a 45% chance of progression to high risk PDR within 1 year 
Explanation: Ans. (a) Very severe NPDR has a 45%. chance of progression to high risk PDR within 1 yearOption a - In the ETDRS, it was found that Severe NPDR had a 15% chance and Very severe NPDR a 45% chance of progression to high risk PDR within 1 year.Option b - Contraindicated if FAZ > 1000 microns Option c - PRP should be done in multiple sittings Option d - In ETDRS study, aspirin use did not alter progression of retinopathy and did not reduce the risk of vitreous hemorrhage.