Frequency 55 Multifocal Contact Lens

multifocal contact
(Multifocal contacts) these lenses are designed to provide both distance vision and reading vision for those who have presbyopia. There are several styles to choose from depending on your needs.

frequency
The fact of being frequent or happening often
the ratio of the number of observations in a statistical category to the total number of observations
The rate at which something occurs or is repeated over a particular period of time or in a given sample
The ratio of the number of actual to possible occurrences of an event
the number of occurrences within a given time period; "the frequency of modulation was 40 cycles per second"; "the frequency of his seizures increased as he grew older"
Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency. The period is the duration of one cycle in a repeating event, so the period is the reciprocal of the frequency.

lens
genus of small erect or climbing herbs with pinnate leaves and small inconspicuous white flowers and small flattened pods: lentils
a transparent optical device used to converge or diverge transmitted light and to form images
A piece of glass or other transparent substance with curved sides for concentrating or dispersing light rays, used singly (as in a magnifying glass) or with other lenses (as in a telescope)
An object or device that focuses or otherwise modifies the direction of movement of light, sound, electrons, etc
The light-gathering device of a camera, typically containing a group of compound lenses
(metaphor) a channel through which something can be seen or understood; "the writer is the lens through which history can be seen"

55
fifty-five: being five more than fifty
Country Code: +55 International Call Prefix: 00 then Carrier Code
Year 55 (LV) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar.