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1-800 Contacts was also involved in several lawsuits against Lens.com, Inc., including a trademark cancellation case in the United States Court of Appeals for the Federal Circuit, Lens.com, Inc. v. 1-800 Contacts, Inc., in which the Court determined that Lens.com's trademark "LENS", held in connection with "computer software", had been abandoned because Lens.com merely used software to sell ...
Intermolecular forces such as Van der Waals forces, hydrogen bonds, and dipole–dipole interactions are typically not sufficiently strong to hold two apparently conformal rigid bodies together, since the forces drop off rapidly with distance, [2] and the actual area in contact between the two bodies is small due to surface roughness and minor imperfections.
Polyvinyl butyral (or PVB) is a resin mostly used for applications that require strong binding, optical clarity, adhesion to many surfaces, toughness and flexibility. It is prepared from polyvinyl alcohol by reaction with butyraldehyde.
A prescription of −1.00 +0.25 × 180 describes a lens that has a horizontal power of −1.00 D and a vertical power of −0.75 D. Only ophthalmologists write prescriptions in + cylinder. An optometrist would write a prescription in - (minus) cylinder. All spectacle and contact lenses would be made in minus cylinder.
There are two types of adhesives that harden by drying: solvent-based adhesives and polymer dispersion adhesives, also known as emulsion adhesives. Solvent-based adhesives are a mixture of ingredients (typically polymers) dissolved in a solvent. White glue, contact adhesives and rubber cements are members of the drying adhesive family. As the ...
Lens Express was a direct-mail-order company that sold contact lenses that were available over-the-phone, and also offered a free catalog. The company was well known for Lynda Carter (TV's Wonder Woman) appearing in its ads, including her famous trademark sayings such as "I wouldn't trust these baby blues to just anyone!"
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