An 18 year old boy comes to the eye casuality with history of injury with a tennis ball. On examination there is no perforation but there is hyphaema. The most likely source of the blood is:
Iris vessels
Circulus iridis major
Circulus iridis minor
Sho posterior ciliary vessels
Traumatic hyphaema (blood in the anterior chamber) occurs due to injury to the iris or ciliary body vessels. The circulus iridis major gives off branches to the ciliary processes. Ref:Comprehensive Ophthalmology By AK Khurana, 4th Edition, Page 404