Julius Hirschberg stubbornly stuck with a tangent screen marked with rings out to 45°. He studied his patients’ visual fields very carefully with this simple device and, in 1875, coined the term …

Tangent visual fields are a rapid and inexpensive way to test for functional loss of superior visual field in patients with upper eyelid malposition. Our data revealed potential differences between …

Feb 26, 2025 · The tangent visual field test at 1 and 2 meters (m). The visual field normally expands on increasing the testing distance from 1 to 2 m. This is due to the increase in the …

In this study, we systematically evaluated and compared the accuracy of manual kinetic (tangent screen and the Gold-mann perimeter) and automated static perimetry (Humphrey Field …

Nonphysiologic lack of visual field expansion (tubular or gun-barrel visual fields) is best demonstrated at the tangent screen.

It describes the components and setup of the tangent screen, how to test different areas of the visual field, techniques for detecting and classifying scotomas, factors that influence test …

Use this tangent screen to chart a patient's visual field loss. This kit includes the tangent screen, wand, and test object-everything you need to perform visual field testing!

Our study was designed to determine if tangent screen testing is a valid, time- and cost-effi-cient method of testing superior visual fields in patients with ptosis and dermatochalasis. Addi …

Tangent screen perimetry evaluates the central 30 degrees field at 1 m. The test is done on each eye separately, with the opposite eye patched. Testing at 2 m expands the field defects to …

Aug 6, 2013 · Tangent screen testing and kinetic perimetry are capable of identifying small central defects, particularly those missed on standard automated threshold tests and can delineate …