Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.
Disorders of the eyes can be divided into the following categories:
Intraocular disorders— Examples include cataracts and glaucoma.
Retinal disorders— Examples of these are hypertensive retinopathy, diabetic retinopathy, and macular degeneration.
Refractive errors— Examples include myopia, hyperopia, presbyopia, and astigmatism.
Traumatic injury— Examples include hyphema, contusions, foreign bodies, lacerations, and penetrating injuries.