<unk>  is an anomaly in the<unk> resulting from damage to the<unk>  surface. A<unk>  means that the<unk> has been penetrated, thus leaving the<unk> damaged. The<unk> is a clear part of the eye which controls and focuses the entry of light into the eye. Damage to the<unk> due to<unk>  can cause decreased visual acuity.
Corneal perforation
Corneal abrasion
Corneal hydrops
Corneal ulcer
Intraocular hemorrhage
Vitreous hemorrhage
Ocular ischemic syndrome
Chemical eye injury