The tennis ball is round firm object that exposes the eye to the blunt trauma can range from a simple corneal abrasion to rupture globe. The important thing is to consider the increase of t ball injuries are: Velocity of impact Angle of impact Eyelid trauma may lead to periorbital concussion or black eye, not a serious condition resolves on its own Blow our orbital fracture medial wall and orbital floor are most commonly affected Trauma to globe SC heammorghe resolves in 1 to 2 weeks  Corneal abrasion Hyphaema TR mydriasis Miosis Iridodialysis Cyclodialysis Iredeamia Sphincter rupture  Polycoria TR Wasius ring TR heterochromia iris atrophy   TR cataract Vit heamorrghe Berlins oedema Choroidal rupture Retinal detachment TR optic neuropathy Share your opinion.