Purpose of review: The purpose of this study is to review commonly encountered adverse ocular effects of illicit drug use.
Recent findings: Drug and alcohol abuse can produce a variety of ocular and neuro-ophthalmic side effects. Novel, so-called 'designer', drugs of abuse can lead to unusual ocular disorders. Legal substances, when used in manners for which they have not been prescribed, can also have devastating ophthalmic consequences.
Summary: In this review, we will systematically evaluate each part of the visual pathways and discuss how individual drugs may affect them.