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Lisa Nicole Lopes (May 27, 1971 – April 25, 2002), better known by her stage name Left Eye, was an American rapper and singer. She was a member of the R&B girl group TLC, alongside Tionne "T-Boz" Watkins and Rozonda "Chilli" Thomas. Besides rapping and singing on TLC recordings, Lopes was the creative force behind the group, receiving more co-writing credits than the other members. She also ...
An autostereogram is a two-dimensional (2D) image that can create the optical illusion of a three-dimensional (3D) scene. Autostereograms use only one image to accomplish the effect while normal stereograms require two. The 3D scene in an autostereogram is often unrecognizable until it is viewed properly, unlike typical stereograms. Viewing any kind of stereogram properly may cause the viewer ...
The canthus ( pl.: canthi, palpebral commissures) is either corner of the eye where the upper and lower eyelids meet. [1] More specifically, the inner and outer canthi are, respectively, the medial and lateral ends/angles of the palpebral fissure . The bicanthal plane is the transversal plane linking both canthi and defines the upper boundary ...
Ocular dominance, sometimes called eye preference or eyedness, [1] is the tendency to prefer visual input from one eye to the other. [2] It is somewhat analogous to the laterality of right- or left- handedness; however, the side of the dominant eye and the dominant hand do not always match. [3] This is because both hemispheres control both eyes, but each one takes charge of a different half of ...
The LogMAR chart is designed to enable more accurate estimates of acuity as compared to other acuity charts (e.g., the Snellen chart ). [1] Each line of the LogMAR chart comprises the same number of test letters (effectively standardizing the test across letter size); the letter size change from one line to the next is a constant ratio, as is the spacing between lines (making the chart easy to ...
A Snellen chart is an eye chart that can be used to measure visual acuity. Snellen charts are named after the Dutch ophthalmologist Herman Snellen who developed the chart in 1862 as a measurement tool for the acuity formula developed by his professor Franciscus Cornelius Donders. [1] [2] Many ophthalmologists and vision scientists now use an improved chart known as the LogMAR chart .
The iris ( pl.: irides or irises) is a thin, annular structure in the eye in most mammals and birds, responsible for controlling the diameter and size of the pupil, and thus the amount of light reaching the retina. In optical terms, the pupil is the eye's aperture, while the iris is the diaphragm. Eye color is defined by the iris.
HAL 9000 (or simply HAL or Hal) is a fictional artificial intelligence character and the main antagonist in Arthur C. Clarke 's Space Odyssey series. First appearing in the 1968 film 2001: A Space Odyssey, HAL ( Heuristically Programmed Algorithmic Computer) is a sentient artificial general intelligence computer that controls the systems of the Discovery One spacecraft and interacts with the ...
Electrosurgery. A surgeon using a monopolar RF electrosurgical instrument to coagulate (and desiccate) tissue in the excision of a lipoma. MeSH. D004598. [ edit on Wikidata] Electrosurgery is the application of a high-frequency (radio frequency) alternating polarity, electrical current to biological tissue as a means to cut, coagulate ...
Normal fundus photographs of the right eye (left image) and left eye (right image), seen from front so that left in each image is to the person's right. Each fundus has no sign of disease or pathology. The gaze is into the camera, so in each picture the macula is in the center of the image, and the optic disk is located towards the nose. Both optic disks have some pigmentation at the perimeter ...