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When applied to the surface of the eye, side effects may include a brief period of blurry vision and discoloration of contact lenses of the soft type. [7] [3] When used by mouth or injection, side effects may include headache, nausea, and a change to the color of the skin for a brief period of time. [3] Allergic reactions may rarely occur. [3]
Transmittance of EnChroma color correcting lenses (indoor and outdoor) superimposed onto the normalized spectral sensitivities of the cone opsins of a color normal observer. Glasses with a notch filter (e.g. EnChroma glasses) filter a narrow band of light around 590 nm that excites both the L- and M-cones (yellow-green wavelengths). [12]
The company received a grant from the NIH in 2005, the glasses were released to the public in 2012 and cheaper versions in 2014. [4] In 2015, EnChroma teamed up with Valspar Paint in an advertising campaign titled "Color For All", which focused on the experience of trying on EnChroma glasses for the first time. This led new EnChroma owners to ...
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A phakic intraocular lens (PIOL) is an intraocular lens that is implanted surgically into the eye to correct refractive errors without removing the natural lens (also known as "phakos", hence the term). Intraocular lenses that are implanted into eyes after the eye's natural lens has been removed during cataract surgery are known as pseudophakic.
Long-term contact lens use can lead to alterations in corneal thickness, stromal thickness, curvature, corneal sensitivity, cell density, and epithelial oxygen uptake. . Other structural changes may include the formation of epithelial vacuoles and microcysts (containing cellular debris), corneal neovascularization, as well as the emergence of polymegethism in the corneal endoth