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Either BASE IN for an exodeviation (eye turned out), BASE OUT for an esodeviation (eye turned in), BASE UP for a hypodeviation (eye turned down) or BASE DOWN for a hyperdeviation (eye turned up). Steps: 1. The patient should be measured in primary position first and then in any other positions of gaze of concern.
James Bert Garner (September 2, 1870 – November 28, 1960) was an American chemical engineer and professor at the Mellon Institute of Industrial Research from 1914 until his retirement in 1957. He is credited with the invention of a World War I gas mask design in 1915.
If the patient saw a red line to the left and white light to the right, they are said to have exotropia or exophoria (crossed diplopia) in which base in (BI) prisms of increasing strength are used until the lines are superimposed. [5] Maddox rod test tutorial. Method for measuring vertical deviations:
A gas mask is an item of personal protective equipment used to protect the wearer from inhaling airborne pollutants and toxic gases. The mask forms a sealed cover over the nose and mouth, but may also cover the eyes and other vulnerable soft tissues of the face.
The M50 series protective mask, officially known as the Joint Service General Purpose Mask ( JSGPM or JSGPM/M50 ), is a lightweight, protective mask system consisting of the mask, a mask carrier, and additional accessories.
The Black Veil Respirator was an early British gas mask designed by John Scott Haldane and introduced in May 1915.
Fig. 3: Fixation disparity as a function of the forced vergence angle which is induced by base-in prisms and base-out prisms in front of the eyes. These prism FD-curves have widely been used for subjective fixation disparity [13] [11] and the clinical implications are described below.
The General Service Respirator (GSR) is a military gas mask designed to replace the previous S10 respirator for the British Armed Forces. It was designed by the Defence Science and Technology Laboratory and Scott Safety in collaboration with the Ministry of Defence, and was manufactured by Scott Safety.
The M2 gas mask was a French -made gas mask used by French, British and American forces from April 1916 to August 1918 during World War I. [1] The M2 was fabricated in large quantities, with about 29,300,000 being made during the war. [2]
The S10 CBRN Respirator is a military gas mask that was formerly used within all branches of the British Armed Forces. Following the mask's replacement by the General Service Respirator in 2011, the S10 is now widely available to the public on the army surplus market.