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Poor Eye Sight
The World Health Organization defines "low vision" as visual acuity between 20/70 and 20/400, with the best possible correction, or a visual field of 20 degrees or less. "Blindness" is defined as a visual acuity worse than 20/400, with the best possible correction, or a visual field of 10 degrees or less. Someone with a visual acuity of 20/70 can see at 20 feet what someone with normal sight can see at 70 feet. Someone with a visual acuity of 20/400 can see at 20 feet what someone with normal sight can see at 400 feet. A normal visual field is about 160-170 degrees horizontally.
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1800Contacts.com
Join over 5 million customers that enjoy the simplicity of ordering contact lenses from 1-800 CONTACTS!
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VisionDirect.com
Offers the largest selection of contact lenses on the web with the most simple ordering process avaiable and same day shipping on most products. You will also recieve Vision Rewards on all purchases.
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ACLens.com
Shop online for your name brand and save up to 70%. They carry all major brands of contact lenses including Acuvue, Focus, Freshlook, Preference, Biomedics and more. With over half a million lenses in stock, AC Lens has the contact lenses you need.
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Lensquest.com
is the online place to buy all major brands of contact lenses including a wide selection of special effects lenses and color lenses - Free Priority Shipping.
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