BIO-1100 is a projection-type Humphrey visual field analyzer machine for visual field defects exams, especially for a glaucoma test. This visual field testing machine has professional software. There are several testing strategies (threshold, screen, special, custom, dynamic, and custom dynamic) and testing patterns to choose from for fast examinations. Quality beyond your expectations! https://www.hyvisionstar.com/product/bio-1100-projection-perimeter/ | Visionstar | Facebook