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发表于 2011-12-6 12:11
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MBT Baridi
a base curve of 8.6 and a diameter of 15.0.
once properly fit, the lens must stay hydrated in order to work properly. on soft contact lenses,belstaff boots, this is accomplished simply by blinking. think of your lids as windshield washers that constantly clean the lens. if you wear lenses,moncler jackets, you may notice that they blur a little after long term computer use. this is directly related to the fact that a persons blink rate slows when focusing on anything up close,mbt baridi, i.e. the computer screen.
as you can see the optical qualities, proper fitting,louis vuitton jewellery, and constant blinking are the main factors when figuring how contact lenses work.
to picture this in your mind, picture a circle and imagine the top quarter of the circle is a lens. now imagine the top half of a similar circle is a lens. can you begin to see how different those two lenses would be?
steve cogger is a contact lens specialist from new york city and a fellow of the contact lens society of america. in order to provide a resource for all lens wearers,mbt moja, he is also the webmaster of all-about-contact-lenses
contact lenses only work properly when they have the proper prescription and they are fit correctly. a contact lens that is too steep will not only be uncomfortable,belstaff jackets mens, it will also create a blurry image because of the distance between the front of your cornea and the back of the lens. a lens that is too flat will not center properly and the edges will buckle or lift off the white of the eye. |
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