This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ocular trauma , Subject name: Ophthalmology
The golden period of eye donation is 
Select and explain. 
A. 6 hours, B. 12 hours, C. 18 hours, D. 24 hours
A: 6 hours
Answer: A: 6 hours 
Explanation: (Refer: AK Khurana Comprehensive Ophthalmology, 6th edition, pg no. 136)"Donor corneas are harvested from cadaveric donors within 6 hours after death, sometimes up to 12 hours after death in countries with cold climates".