Search results
Results from the WOW.Com Content Network
A pair of contact lenses, positioned with the concave side facing upward. A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia.
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 ...
The unwanted interference effects are suppressed by vapour-depositing a special dielectric coating known as a phase-compensating coating on the roof surfaces of the roof prism. These phase-correction coating or P-coating on the roof surfaces was developed in 1988 by Adolf Weyrauch at Carl Zeiss [6] Other manufacturers followed soon, and since ...
Gonadotropin-releasing hormone analogs such as leuprorelin (Lupron), which last longer and have fewer side-effects, are also used to reduce libido, [176] as are selective serotonin reuptake inhibitors. [166]: 177–181 The evidence for these alternatives is more limited and mostly based on open trials and case studies. [170]
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]
The desirable amount of magnification depends upon the intended application, and in most binoculars is a permanent, non-adjustable feature of the device (zoom binoculars are the exception). Hand-held binoculars typically have magnifications ranging from 7× to 10×, so they will be less susceptible to the effects of shaking hands. [25]
Side Effects is a 2013 American psychological thriller film directed by Steven Soderbergh and written by Scott Z. Burns.It stars Rooney Mara as a woman who is prescribed experimental drugs by psychiatrists (Jude Law and Catherine Zeta-Jones) after her husband (Channing Tatum) is released from prison.
Two main scales are in use, in both adult and adolescent populations: the 20-item self-reported Problematic Use of Mobile Phones (PUMP) scale, [17] and the Mobile Phone Problem Use Scale (MPPUS). There are variations in the age, gender, and percentage of the population affected problematically according to the scales and definitions used.