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In glasses with powers beyond ±4.00D, the vertex distance can affect the effective power of the glasses. [4] A shorter vertex distance can expand the field of view, but if the vertex distance is too small, the eyelashes will come into contact with the back of the lens, smudging the lens and causing annoyance for the wearer.
Base curve radius (BCR) or simply base curve (BC) is the measure of an important parameter of a lens in optometry.On a spectacle lens, it is the flatter curvature of the front surface.
Presbyopia can be corrected using glasses, contact lenses, multifocal intraocular lenses, or LASIK (PresbyLASIK) surgery. [2] [7] [4] The most common treatment is glass correction using appropriate convex lens. Glasses prescribed to correct presbyopia may be simple reading glasses, bifocals, trifocals, or progressive lenses. [4]
An eye chart, such as a standard Snellen chart of progressively smaller letters, is then used to determine the person's visual acuity. The eye examination may proceed to measurement of the localized curvature of the cornea with a manual keratometer , [ 43 ] with detection of irregular astigmatism suggesting a possibility of keratoconus.
A small number of grocery stores are licensed as drug stores and sell full strength beer, wine, and spirits. As an example, a chain grocery store that has pharmacy services at most or all locations may elect a single location in the chain as the licensed establishment to sell beer, wine, and spirits. Connecticut No 9 a.m. – 1 a.m. (Mon.–Thurs.)
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