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: Ophthalmology
Secondary detion of the eye is an example of the following law: 
Select and explain. 
A. Herring's, B. Listing's, C. Sherrington's, D. Donder's
A: Herring's
Answer: A: Herring's 
Explanation: Ans. Herring's