Which of the following is a common adverse effect of antipsychotic medication?

Blurred vision is a common adverse effect of antipsychotic medications, which are often used to treat conditions such as schizophrenia and bipolar disorder. This side effect can occur due to the medication's impact on the autonomic nervous system, particularly its anticholinergic properties, which can affect the eye and lead to vision changes.

While other side effects like dizziness or sedation may also be associated with antipsychotic use, blurred vision specifically is noted due to the way these medications interact with neurotransmitters involved in ocular function.

Increased energy, improved mood, and increased sleep are not typical adverse effects of antipsychotic medications. Increased energy would not historically be associated with these medications, which are generally known to have sedative properties. Similarly, improved mood is a desired therapeutic effect rather than an adverse effect. Increased sleep is generally a side effect of certain antipsychotics, but it doesn't align with common acute adverse effects as well as blurred vision does. Therefore, the recognition of blurred vision as a side effect highlights the important neurophysiological impacts of antipsychotics that healthcare providers need to monitor in their patients.