binoklid

Binoklid is a term used in various languages to denote anything related to two eyes or two optical channels. In ophthalmology and vision science, it most commonly refers to binocular vision—the ability to use both eyes together to form a single, coherent visual percept.

Binoklid vision relies on coordination between the two eyes, including aligned gaze (vergence), fusion of two slightly different images, and the interpretation of binocular disparity to perceive depth (stereopsis). This dual-channel processing provides a wider visual field, improved contrast sensitivity, and important depth cues essential for navigation and object interaction. Measurement of binoklid function often involves tests of alignment (cover tests, stroboscopic or Maddox methods) and stereoacuity assessments (such as random-dot or real-world depth tests). Clinically, assessing binoklid function helps diagnose conditions like strabismus (misalignment), amblyopia (reduced vision in one eye), and binocular diplopia (double vision).

Disorders of binoklid vision can affect daily activities, including reading, driving, and sports. Treatments aim to improve binocular cooperation and may include vision therapy, refractive correction, prism glasses to shift or align images, or surgical intervention to restore ocular alignment. In addition to medical contexts, binoklid concepts underpin technologies such as binoculars, three-dimensional displays, and virtual reality systems, which present separate images to each eye to recreate depth perception.

Overall, binoklid relates to how two-eyed viewing is integrated by the brain to produce depth, stability, and a unified visual experience. See also binocular vision, stereopsis, and vergence.