This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Ophthalmology
Axenfeld anomaly is seen in glaucoma associated with 
Select and explain. 
A. Aniridia, B. Phakomatosis, C. Iridocorneal dysgenesis, D. Ectopia lentis
C: Iridocorneal dysgenesis
Answer: C: Iridocorneal dysgenesis 
Explanation: a) Microdontia; b.Slit pupil and iris atrophy; c.Corectopia with iris atrophy; d,e.Posterior embryotoxon; f.Broad peripheral anterior synechiae. Axenfeld anomaly is seen in glaucoma associated with iridocorneal dysgenesis. It is a posterior embryotoxon characterised by prominent Schwalbe's ring. Ref: Comprehensive Ophthalmology, A. K. Khurana, 4th edition, p214.