stereoacuity การใช้

• A population study revealed a surprisingly high incidence of good stereoacuity :.
• A person's stereoacuity determines the minimum image disparity they can perceive as depth.
• There is no equivalent in stereoacuity of the normal 20 / 20 visual acuity standard.
• The distinction between screening for the presence of stereopsis and a measurement of stereoacuity is valuable.
• There are two types of common clinical tests for stereopsis and stereoacuity : random dot stereotests and contour stereotests.
• Vernier acuity and stereoacuity are cited as being detected with only a 2 4 arc second degree of separation.
• Situs inversus of the optic disc may occur unilaterally or bilaterally, associated with reduced binocularity and stereoacuity resembling monofixation syndrome.
• Stereoacuity is limited by the visual acuity of the eyes, and in particular by the visual acuity of the weaker eye.
• Their stereoacuity is often in the range of 3000 to 70 arcsecond, and a small central suppression scotoma of 2 to 5 deg.
• Game developer James Blaha, who developed his own anisometropic amblyopia were reported whose visual acuity and stereoacuity improved due to learning-based therapies.
• Although stereoacuity normally corresponds very well with monocular acuity, it may be very poor, or absent, even in subjects with normal monocular acuities.
• There is recent evidence that stereoacuity may be improved in persons with amblyopia by means of perceptual learning ( " see also : " treatment of amblyopia ).
• It is made of random small pattern elements; depth can be created only in multiples of elements and therefore may not reach the small threshold disparity which is the purpose of stereoacuity measurements.
• Experiments on monkeys, published 2007, revealed improvements in stereoacuity in monkeys who, after having been raised with binocular deptivation through prisms for the first two years, were exposed to extensive psychophysical training.
• Also, there is the issue of vernier acuity, which is the eye s ability to detect an offset between 2 lines and stereoacuity, which is the ability to discriminate depth by the use of both eyes.
• For more complex targets, stereoacuity is similar to normal monocular visual acuity, or around 0.6 1.0 arc minutes, but for much simpler targets, such as vertical rods, may be as low as only 2 arc seconds.
• Reputedly the largest haploscope, with images of over a meter ( in fact, 4 feet ) square and a viewing distance for each eye of nearly five meters ( 16 feet ), was constructed by Vaegan in about 1975 to research stereoacuity ( see Vaegan, 1978 ).
• Among the investigations into post-surgical stereopsis is a publication of 2005 that reported on a total of 43 adults over 18 years of age who had surgical correction after having lived with from constant-horizontal strabismus for more than 10 years with no previous surgery or stereopsis, with visual acuity of 20 / 40 or more also in the deviating eye; in this group, stereopsis was present in 80 % of exotropes and 31 % of esotropes, with the recovery of stereopsis and stereoacuity being uncorrelated to the number of years the deviation had persisted.