THE Lancaster diplopia test (Lancaster, 1939) is simple and sensitive, shows topical cyclophoria easily, and is applicable to alternators with abnorinal retinal correspondence, so that in these respects it must be regarded as superior to the Hess test (Hess, 1916). The Lancaster method of recording, however, is less lucid, and attempts have been made, for example by Tulloch (1950) and Hugonnier...

Human eyes are unique. Unlike other primates whose pupils are masked by a dark sclera, the human eye highlights a dark pupil against a white sclera. Newborn infants look longer at schematic stimuli with three blobs arranged in a face-like configuration – but only if the blobs match the dark-on-light phenotype of the human eye. If a visual preference for faces with human-like eyes is innately sp...

An experiment was conducted to examine the hypothesis that the right hand system is superior in the processing of visual information. A manual aiming task utilizing four visual conditions was employed. In the full-vision (FV) condition subjects were afforded vision of both the hand and the target throughout the course of the movement. In the ambient-illumination-off (AO) condition, the room lig...

PURPOSE Perceived color of ceramics changes by the spectral power distribution of ambient light. This study aimed to quantify the amount of shifts in color and color coordinates of clinically simulated seven all-ceramics due to the switch of three ambient light sources using a human vision simulating spectroradiometer. MATERIALS AND METHODS CIE color coordinates, such as L*, a* and b*,of cera...

This integrative review sought knowledge across a broad spectrum of literature concerning the role color and light in maternity environments. Today it is acknowledged that clinical nature birth spaces detrimental to maintaining normal physiological rates. Significantly, “clinical” are often described as white, pale, monochromatic, and/or overlit. Attempts make settings more “home-like” have pro...

A source of illumination with good color properties, daylight or electric, should reveal a full range of colors, should enable good color discrimination between objects of similar spectral reflectance, and should not distort colors. We presently have only one recognized measure of color rendering in the lighting industry, color rendering index (CRI), developed in the early 1960s. However, CRI s...

beds. From the Council, Mr. Wake went on, a handsome sum was already received, and now that the 60 beds had been added, a grant towards the cost of their maintenance would be applied for. The Sheffield scheme continues to grow, and there seems little doubt that eventually its adoption may become universal in the city. In this event sufficient money should be available, not merely to support the...