What is the primary purpose of ophthalmic ultrasound in diagnostics?

The primary purpose of ophthalmic ultrasound in diagnostics is to visualize and assess the structures of the eye and surrounding tissues. This imaging technique provides detailed information about the anatomy of the eye, including the cornea, lens, vitreous body, and retina. It is particularly useful in situations where other imaging modalities may not provide adequate information, such as in the presence of cataracts or opacities that hinder direct visualization during an eye exam.

Ophthalmic ultrasound is utilized for various purposes, including the evaluation of retinal detachments, tumors, and other pathologies affecting the eye. It helps practitioners determine the best course of treatment and monitor changes in the eye over time. Given its ability to create real-time images and provide structural information, it is an essential tool in the ophthalmologists' diagnostic arsenal.

The other options, while related to eye health, do not accurately reflect the primary function of ophthalmic ultrasound. Evaluating intraocular pressure is typically done through tonometry, measuring visual acuity assesses how well a patient can see and is done through an eye chart, and diagnosing systemic diseases involves a broader clinical context that extends beyond the specialized use of ultrasound specific to ocular conditions.