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Intraocular pressure varies throughout the night and day. The diurnal variation for normal eyes is between 3 and 6 mmHg and the variation may increase in glaucomatous eyes. During the night, intraocular pressure may not decrease [ 17 ] despite the slower production of aqueous humour. [ 18 ]
Dark adaptation of both rods and cones requires the regeneration of the visual pigment from opsin and 11-cis retinal. [13] Therefore, the time required for dark adaptation and pigment regeneration is largely determined by the local concentration of 11-cis retinal and the rate at which it is delivered to the opsin in the bleached rods. [14]
Amaurosis fugax (Ancient Greek: ἀμαύρωσις, amaurosis meaning 'darkening', 'dark', or 'obscure', Latin: fugax meaning 'fleeting') is a painless temporary loss of vision in one or both eyes. [ 3 ]
The word "glaucoma" comes from the Ancient Greek γλαύκωμα, [109] a derivative of γλαυκός (glaukos), [110] which commonly described the color of eyes which were not dark (i.e. blue, green, light gray). Eyes described as γλαυκός due to disease might have had a gray cataract in the Hippocratic era, or, in the early Common Era ...
The dots are usually black/gray on a white background and gray/white on a black background; however, they can also be transparent, white flashing, or colored. Presence of at least 2 additional visual symptoms of the 4 following categories: i. Palinopsia. At least 1 of the following: afterimages or trailing of moving objects. ii.
Clumped-on mascara, aging hands and under-eye bags, oh my! Kate Bock has the cures for all. The Sports Illustrated Swimsuit model shared her skincare secrets in the latest edition of ...
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Nicole Eggert made a surprising revelation about her days starring in the iconic TV series "Baywatch.". For over a decade, fans around the world tuned in to watch the show's team of red swimsuit ...