Which measurement is commonly included in a comprehensive eye exam?

A comprehensive eye exam assesses various aspects of eye health and vision. This includes multiple important measurements that help identify potential issues.

Visual fields testing is crucial as it evaluates peripheral vision and can provide insights into conditions affecting the optic nerve, such as glaucoma or neurological disorders.

Color perception tests are also part of the exam, as they determine a patient's ability to distinguish different colors, which can be vital for diagnosing certain eye conditions and understanding visual capabilities.

Additionally, tonometry is a method of measuring intraocular pressure (IOP), which is essential in diagnosing and managing glaucoma.

Each of these measurements contributes to a holistic understanding of a patient's ocular health, underscoring the necessity of conducting a thorough evaluation that encompasses all these tests. Thus, including all these components ensures a comprehensive assessment is achieved, reinforcing the importance of option D.