The Perimeter, or Visual Field Analyzer, is an advanced diagnostic instrument essential for quantitatively mapping the boundaries and sensitivity of a patient's peripheral and central vision, detecting and monitoring visual field loss.
A fundamental instrument for the detection and monitoring of several major ocular and neurological conditions, the Perimeter is essential for assessing the extent of a patient's visual field. This device presents light stimuli of varying intensities against a standardized background, allowing eye care professionals to accurately map visual field defects, which is a critical step in the diagnosis and staging of glaucoma, as well as conditions affecting the optic nerve and visual pathways.
The Perimeter employs advanced psychophysical testing strategies (like SITA or Humphrey algorithms) to provide reliable, repeatable, and highly detailed maps of visual sensitivity. This capability simplifies the long-term management of chronic diseases, making it an indispensable tool in specialized glaucoma clinics, neurological centers, and hospitals. Its precise computer-controlled stimulus presentation and fixation monitoring ensure that the readings contribute significantly to confident clinical prognoses and treatment adjustments.
Because of its unmatched ability to quantify and track changes in visual function over time, the Perimeter is a crucial instrument in the management of progressive vision loss. Its vital role in the diagnostic procedure ensures confident detection of early glaucomatous damage, optic neuritis, and pituitary tumors, leading to effective preservation of functional vision.
