Binocular Disparities is spelled /bɪˈnɑkjʊlər dɪsˈpærɪtiz/. The first syllable of binocular is pronounced "bɪ" like the word "bit," and the second syllable is pronounced "nɑkjʊlər" like "nah-kyoo-lər". The word disparities is pronounced "dɪsˈpærɪtiz" with the stress on the second syllable, and the "s" sound is pronounced like a "z". The term binocular disparities refers to differences in image reception between the two eyes, which can cause visual impairments.
Binocular disparities refer to the differences in the visual information received by each eye in a binocular vision system. When an individual views an object, each eye perceives a slightly different image due to their slightly different positions on the face, resulting in binocular disparities. These disparities are caused by two main factors: the horizontal separation between the eyes (interocular distance) and the convergence angle of the eyes.
Binocular disparities are crucial for depth perception and the creation of a three-dimensional (3D) visual perception. The brain uses the information from both eyes to compute the depth and distance of objects in the visual field. By analyzing and comparing the differences between the binocular images, the brain creates a sense of depth perception, allowing for accurate judgment of distances, sizes, and shapes.
There are two types of binocular disparities: crossed disparity and uncrossed disparity. Crossed disparity occurs when the image received by the left eye subtends a smaller visual angle than the image received by the right eye. On the other hand, uncrossed disparity occurs when the left eye's image subtends a larger visual angle. The brain uses these disparities to calculate depth and create a 3D perception of the visual environment.
Binocular disparities are employed in various applications, such as stereoscopic displays (e.g., virtual reality) and medical diagnostics (e.g., assessing visual disorders). Understanding binocular disparities provides insights into the complex mechanisms underlying binocular vision and the brain's ability to create a rich, three-dimensional visual experience.
The etymology of the word "binocular disparities" can be broken down as follows:
1. Binocular: The word "binocular" is derived from the Latin word "bini" meaning "two" and "oculus" meaning "eye". It refers to the use of both eyes together, usually in reference to vision and the perception of depth.
2. Disparities: The word "disparities" is derived from the Latin word "disparitas" which means "difference" or "inequality". It refers to a lack of similarity or variation between two things.
When combined, "binocular disparities" refers to differences or variations between the visual information perceived by each eye when viewing an object or scene using both eyes together.