Lighting glare

Less than half of patients affected with corneal changes have visual symptoms, but the most common complaints relate to halos aroimd lights, glare, and photophobia, whereas visual acuity usually remains imchanged. On drug discontinuation, both subjective symptoms and objective corneal signs disappear. 

Dyschromatopsia, including yellow or blue tinge to vision and/or colored halos Colored spots surrounded by coronas Snowy, hazy, or blurred vision Dimming of vision Flickering or flashes of light Glare sensitivity... 

Eye strain can be caused by subjecting the eye to excessively bright light, glare and is also a general term used for symptoms of refractive errors, uncorrected by spectacles, causing headaches, inflammation and general tiredness etc. 

Apart from physical discomfort and irritation, poor lighting can induce errors in reading valve labels or instruments on the control panel. Direct or reflected glare can be another problem in many work situations. Having to avoid the glare may constitute another task the worker has to perform, which can divert him or her from the primary job responsibility. 

The function of an antireflection (AR) coating is to reduce the surface reflection of optical elements and increase the amount of light transmitted. The glare and ghost images from secondary reflections are minimized. Multiple coatings are now produced that can... 

Flashes of light passed before Auriols eyes, and strange noises smote his ears. The furnace breathed forth flames and mephitic vapors the spiral worm of the alembic became red hot, and seemed filled with molten lead the skeletons grinned and gibbered the bald decapitated head opened its eyes, and fixed them with a stony glare, on the... 

Tyramine-containing foods Environmental triggers Glare or flickering lights High altitude Loud noises... 

FIGURE 9.15 (a) Top view and blowup of illuminated AM-PLED is shown. The bright area on the left is glare from the room light. The PLED was about 120 x 62.5 xm for pixel size of 127 x 127 xm. The fill factor was about 45%. (b) Measured current and luminance versus data voltage of 3-a-Si H TFTs AM-PLED are shown. (From Kim, J. H., Hong, Y., and Kanicki, J., IEEE Electron Device Lett., 24, 451, 2003. With permission.)... 

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