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The prism cover test ( PCT) is an objective measurement and the gold standard in measuring strabismus, i.e. ocular misalignment, or a deviation of the eye. [1] It is used by ophthalmologists and orthoptists in order to measure the vertical and horizontal deviation and includes both manifest and latent components. [1]
Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]
Exophoria. Exophoria is a form of heterophoria in which there is a tendency of the eyes to deviate outward. [1] During examination, when the eyes are dissociated, the visual axes will appear to diverge away from one another. [2] The axis deviation in exophoria is usually mild compared with that of exotropia .
And the winner of ‘Perfect Match’ Season 2 is…. After all the votes are counted, Lachey announces that the winning couple won by a single vote. He declares Christine and Nigel, who became a ...
Fixation disparity. Fixation disparity is a tendency of the eyes to drift in the direction of the heterophoria. While the heterophoria refers to a fusion-free vergence state, the fixation disparity refers to a small misalignment of the visual axes when both eyes are open in an observer with normal fusion and binocular vision. [1]
Fans aren’t the only ones itching for more Suits content — Patrick J. Adams is “down” to play Mike Ross again if given the chance. Adams, 42, joined former costars Sarah Rafferty, Amanda ...
In case you missed it, actor-writer-director Andrew McCarthy caught up with his fellow Brat Pack stars for his documentary Brats to talk about how he "hated" the popular label and the ways it ...
30 October. ( 2006-10-30) –. 18 December 2006. ( 2006-12-18) A Girl's Guide to 21st Century Sex is a documentary TV series about sex, which ran in eight episodes on Channel 5 and was presented by Dr. Catherine Hood. The 45-minute-long episodes (including advertisements) were broadcast on Monday nights. The series started on 30 October 2006 ...