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Recently, central serous chorioretinopathy has been understood to be part of the pachychoroid spectrum. [5] [6] In pachychoroid spectrum disorders, of which CSR represents stage II, the choroid, the highly vascularized layer below the retina, is thickened and congested with increased blood vessel diameter, especially in the deep choroid (the so-called Haller's layer).
Glasses with a notch filter (e.g. EnChroma glasses) filter a narrow band of light that excites both the L and M cones (yellow–green wavelengths). [63] When combined with an additional stopband in the short wavelength (blue) region, these lenses may constitute a neutral-density filter (have no color tint). They improve on the other lens types ...
Stargardt disease is the most common inherited single-gene retinal disease. [1] In terms of the first description of the disease, [2] it follows an autosomal recessive inheritance pattern, which has been later linked to bi-allelic ABCA4 gene variants (STGD1).
Glasses, also known as eyeglasses or spectacles, are vision eyewear with clear or tinted lenses mounted in a frame that holds them in front of a person's eyes, typically utilizing a bridge over the nose and hinged arms, known as temples or temple pieces, that rest over the ears for support.
In the Iliad, the Greek goddess Athene is said to have gray eyes (γλαυκῶπις). [68] Under magnification, gray eyes exhibit small amounts of yellow and brown color in the iris. Gray is the second-rarest natural eye color after green, with 3% of the world's population having it. [69]
A 2018 Cochrane review found there is unlikely to be a significant difference in distance vision between blue-filtering and plain lenses, and was unable to identify a difference in contrast sensitivity or colour discrimination. [42] [43] The light-adjustable IOL was approved by the U.S. Food and Drug Administration (FDA) in 2017. [44]
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