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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. On a contact lens it is the curvature of the back surface and is sometimes referred to as the back central optic radius (BCOR). Typical values for a contact ...
Diameter and base curve radius. The parameters specified in a contact lens prescription may include: Brand name; Material; Base curve radius (BC, BCR) Diameter (D, OAD) Optical power in diopters (dpt) Center thickness (CT) Prescriptions for contact lenses and glasses may be similar but are not interchangeable.
The base curve (usually determined from the profile of the front surface of an ophthalmic lens) can be changed to result in the best optic and cosmetic characteristics across the entire surface of the lens. Optometrists may choose to specify a particular base curve when prescribing a corrective lens for either of these reasons. A multitude of ...
The Address Book in Desktop Gold helps you keep track of email addresses, phone numbers, mailing addresses, birthdays, and anniversaries of your contacts. You can sort your Address Book by last name, first name, email address, screen name, telephone number, or category. Just use the Quick Find box to easily search through your contacts. Add a ...
The map γ : I → R 3 is called the base curve for the circular surface and the two maps u, v : I → R 3 are called the direction frame for the circular surface. For a fixed t 0 ∈ I the image of ƒ(t 0, θ) is called a generating circle of the circular surface. [1] Circular surfaces are an analogue of ruled surfaces. In the case of circular ...
Save yourself time when sending the same email to multiple people by creating a group of your contacts. Instead of adding each email address separately, you can email a bunch of contacts by typing your group's name in the "To" field of a new email. Once you've created a group, you can continue to add, edit, or delete contacts from it. Add a group
Windows Contacts was a contact manager that was included in Windows Vista, Windows 7, Windows 8. It replaced but retains most of the functionality of Windows Address Book and worked with Windows Live Mail and the Vista version of Windows Mail .
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