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Assessment of the Visual Acuity for Supine Patients Using a Size-Reduced Chart

Specialty:

Neurology, Psychiatry, Ophthalmology & Otolaryngology

Objective:

ICD-10:

Description:

Visual acuity is usually measured with a standard chart (such as the Snellen chart) at a distance of 20 feet. In the Emergency Department and other areas patients may be in a supine position and cannot be tested in the standard way. Placing a visual acuity chart above the patient can allow testing to be done. The size of the acuity chart needs to be adjusted in size to take into account the change in distance between the patient's eyes and the chart.

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