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
In a case of acute attack of glaucoma Vogt's triad excludes: 
Select and explain. 
A. Iris atrophy, B. Goniosynechiae, C. Pigment dispersal, D. Glaucoma floaters
C: Pigment dispersal
Answer: C: Pigment dispersal 
Explanation: C i.e. Pigment dispersal A form of open angle glaucoma characterized by disruption of the iris pigment epithelium with deposition of pigment through out the anterior segment.