Visual angle is the angle a viewed object subtends at the eye, usually stated in degrees of arc. It also is called the object's angular size. The diagram...

In human visual perception, the visual angle, denoted θ, subtended by a viewed object sometimes looks larger or smaller than its actual value. One approach...

optotype on the retina is the same. That size is specified as a visual angle, which is the angle, at the eye, under which the optotype appears. For 6/6 = 1...

and the typically large screen sizes. A larger display increases the visual angle at which content is viewed, both of which contribute to an increased...

vision scientists to estimate visual acuity. The name of the chart is an abbreviation for "logarithm of the Minimum Angle of Resolution". The chart was...

origin is given in degrees of visual angle; it's a measure of eccentricity. Each polar axis is a meridian of the visual field. For example, the horizontal...

[citation needed] Visual acuity is the distance at which test is made / distance at which the smallest optotype identified subtends an angle of five arcminutes...

(pachymetry), and visual field testing. Glaucoma has been classified into specific types: Primary glaucoma (H40.1-H40.2) includes primary open-angle glaucoma (chronic...

the "critical visual angle"), is small in daylight conditions, larger in low light levels. The law is of special significance in visual astronomy, since...

In glaucoma, visual field defects result from damage to the retinal nerve fiber layer. Field defects are seen mainly in primary open angle glaucoma. Because...

Monocular cues include relative size (distant objects subtend smaller visual angles than near objects), texture gradient, occlusion, linear perspective...

units of angle) describing how large a sphere or circle appears from a given point of view. In the vision sciences, it is called the visual angle, and in...

the visual angle is close to or more than 180 degrees in at least one direction. For example, a "diagonal fish eye" would have a viewing angle of at...

either as an angular size (the visual angle that it subtends at the eye, corresponding to the proportion of the visual field that it occupies), or as...

Visual flight or visual attitude flying is the control of an aircraft via outside references (such as the sky or the runway in takeoff). For aircraft...

human (and much of animal vision) is the visual field. It is defined as "the number of degrees of visual angle during stable fixation of the eyes". Note...

lateral and horizontal visual field, about 15 degrees from fixation. The size of the monocular scotoma is 5×7 degrees of visual angle. A scotoma can be a...

20/20 vision is the ability to resolve a spatial pattern separated by a visual angle of one minute of arc, from a distance of twenty feet. A 20/20 letter...

functions of one or more angles. They are distinct from triangle identities, which are identities potentially involving angles but also involving side...

described by the wheel Horizontal eccentricity, in vision, degrees of visual angle from the center of the eye Eccentric contraction, the lengthening of...

In geometry, a solid angle (symbol: Ω) is a measure of the amount of the field of view from some particular point that a given object covers. That is...

angle, also known as Dutch tilt, canted angle, vortex plane, or oblique angle, is a type of camera shot that involves setting the camera at an angle so...

representation of the primary visual cortex (V1), depending on how the estimate is obtained. The inverse of M (i.e. degrees visual angle per millimeter cortical...

how much an eye can differentiate one object from another in terms of visual angles. Resolution in CPD can be measured by bar charts of different numbers...

the effects of the passage of time), ordinary subject matter, unusual visual angles, and inclusion of movement as a crucial element of human perception...

gaze or, when viewed at large angles, in (or out of) the "corner of one's eye". The vast majority of the area in the visual field is included in the notion...

in metres at which the height of a lower case 'x' letter subtends a visual angle of 5 minutes of arc at the nodal point of the eye. The M system is said...

Accommodation Occlusion (the overlapping of one object by another) Subtended visual angle of an object of known size Linear perspective (convergence of parallel...

have two visual opsins different from those in all the other eyes, sensitive to blue and UV light. The posterior lateral eyes (PLEs) are wide-angle motion...

front. The "streaks" seen had varying lengths (a maximum of 2 degrees of visual angle), and were seen to either have a blueish-white color or be colorless...