Bifocals are basically lenses which have two sections with different focuses. Generally they have distance vision in the top half and near vision in the bottom half but they can also be used for intermediate and near vision. The bottom half of the lens comes in different shapes or segments for example round shaped or flat at the top and even right across the lens, this is called an executive bifocal.

Varifocals and bifocals require careful measurement and it is therefore only possible to supply these 'face-to-face' via one of our retail outlets. See similar questions...

With the launch of our Virtual Modelling System we are now able to offer bi/vari-focals (if you order via the VMS.) Prices start at £19 for bi-focals and £29 for vari-focals. See similar questions...

Bifocals are lenses that have two parts - the upper part is used for distance vision, and the lower part is used for such close vision tasks as reading or sewing. Even though bifocals can technically be considered multifocals (because they have more than one focus), the term "multifocal" is generally used interchangeably with the term "trifocal", because they have three or more segments. See similar questions...

Bifocals and multifocals are both used to correct distance, near, and intermediate ranges. However, a bifocal typically uses the top half of the lens for distance and the bottom half for near vision (similar to bifocal glasses). A multifocal lens typically uses the center of the lens for distance and the edge for near. The MVP is actually a multifocal contact lens, but often gets called a bifocal as do many other multifocal contact lenses. See similar questions...

them for another frame making any price adjustment necessary. please see our terms and condition for further information. Your purchase is guaranteed against manufacturing defect for 12 months from the date of purchase. In this instance please return them to us stating the problem and we will resolve any problem. This does not cover damage from accidents or misuse. If you do damage them or scrath the lenses please email us the details and we will let you the cost of repairing them. See similar questions...

No we do not supply varifocal lenses as this is a very complex procedure and needs a personal fitting to make these lenses efficient. We do however supply Bifocal lenses. See similar questions...

Yes. Bifocals offer the convenience of distance and reading powers in one lens. You should only order bifocals if your optometrist has recommended them. We use D28 lenses which have a 28mm-wide segment in the lower half of the lens and are positioned 3mm below the lens centre. Please ask your optometrist to write your prescription assuming a distance of 12-13mm from the eye to the lens (back vertex distance). See similar questions...

Not at the moment. There are many brands of varifocals/progressive lenses and many variable measurements. We are planning to introduce the technology at a later date. See similar questions...

Close to that but no motors built in. In real life you would do adjustment at the moment of initial installation and you would leave it like that, with possibility to change that field of view when you need it or at moment when you need that camera to point somewhere else and you need to change field of view for new scene. See similar questions...

The first time any spectacles are worn some adjustment time is required mainly because the new, clear vision needs to be accepted by your brain. Once it has learnt to recognise the images seen through the spectacles and become familiar with them, the initial "WOW" effect should have worn off. Varifocals are slightly trickier than single focal specs since they change in power as the eyes look from the top to the bottom of the lenses. See similar questions...

Absolutely!! We can put progressives or lined bifocals into your own frame or into most of our new frames. SpecsMakers.com offers a wide range of progressives to fit your needs. See similar questions...

Bifocal lenses have two focal powers: distance and near while progressive lenses have all powers; distance, intermediate and near. See similar questions...

Progressive addition lenses feature a continuous, clear field of vision from distance, through the intermediate ranges, to near without the use of annoying bifocal lines. Bifocal lenses use very old technology. Abrupt and awkward changes between distance and near prescriptions are separated by annoying lines that can be frustrating to wear. See similar questions...

Not necessarily, you may not need glasses for many years but most people need either reading glasses or varifocal glasses that have " no line" on them. These are particularly useful for people who need to use a VDU regularly. See similar questions...

Bifocals use two different powers in one lens. Typically, the upper portion of the lens if used for distance vision and the lower portion is used for viewing objects up close. Bifocals correct for a decreasing ability to focus a problem that sneaks up on just about everybody as they age. It is likely that most people will need bifocals, or what is known as progressive lenses, at some point in their lives. See similar questions...