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Esophoria is an eye condition involving inward deviation of the eye, usually due to extra-ocular muscle imbalance. It is a type of heterophoria. Cause. Causes include: Refractive errors; Divergence insufficiency; Convergence excess; this can be due to nerve, muscle, congenital or mechanical anomalies.
The strength of the prism is increased until the streak of the light passes through the centre of the prism, as the strength of the prism indicates the amount of deviation present. The Maddox rod is a handheld instrument composed of red parallel plano convex cylinder lens , which refracts light rays so that a point source of light is seen as a ...
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]
Maddox wing. The Maddox Wing is an instrument utilized by ophthalmologists, orthoptists and optometrists in the measurement of strabismus (misalignment of the eyes; commonly referred to as a squint or lazy eye by the lay person). It is a quantitative and subjective method of measuring the size of a strabismic deviation by dissociation of the ...
The Worth Four Light Test, also known as the Worth's four dot test or W4LT, is a clinical test mainly used for assessing a patient's degree of binocular vision and binocular single vision. Binocular vision involves an image being projected by each eye simultaneously into an area in space and being fused into a single image.
The following television stations broadcast on digital channel 4 in the United States: [1] [2] [3] K04BJ-D in La Pine, Oregon, on virtual channel 7, which rebroadcasts KBNZ-LD. K04DH-D in Gunnison, Colorado, on virtual channel 4. K04GF-D in Wolf Point, Montana, on virtual channel 18, which rebroadcasts K18BN-D.
Channel 4 (previously 4oD and All 4) is a video on demand service from Channel Four Television Corporation, free of charge for most content and funded by advertising. The service is available in the UK and Ireland; viewers are not required to have a TV licence—required for live viewing and the BBC iPlayer on-demand service—when watching on-demand services.
The UK Music Video Chart – Data supplied by YouTube, the UKMVC supplies you with the top 30 most watched music videos of the week. Hitlist – Current hits. VOTW – Check out The Box Plus Network's Video of the Week! The Fresh List – New and recurrent videos from new and established artists
The Secret World of Alex Mack. Sesame Street (US import; on C4 1987–2001) Sharky & George (US import) Simon in the Land of Chalk Drawings (originally broadcast on ITV; on C4 1988) Spider-Man (US import) Spiff and Hercules (France import; on C4 1993) Square Pegs (US import; on C4 1983-) The Storyteller. Street Sharks.
The First World War (2003) is a ten-part Channel 4 documentary television series surveying the history of World War I (1914-1918). It is based on the 2003 book of the same name by Oxford history professor Hew Strachan. [1] (. Additionally, a tie-in book of participant letters and diaries — A War in Words (2003) by Svetlana Palmer and Sarah ...