Optical Frames and Lenses: A Guide to Vision Quality

What Is Optical 69?

With its fashion-forward pillow-shaped oversized square silhouette, optical 69 pairs a chic black Japanese acetate frame with stylish clip-on grey polarized lenses. Smart sharp corners accented with studs draw the eye to sleek straight temples. This lightweight polycarbonate lens features Aspheric design to reduce magnification and distortion of objects near the periphery.


The frame is the unit of digital transmission, particularly in telecommunications and computer networks. It’s proportionate to the packets of energy known as photons and is continuously used in the process of Time Division Multiplexing. It is also used in various control functions for network management.

When an element has its target attribute set, it indicates to the browser that it should be loaded into a particular frame. If the element doesn’t have a target but the BASE does, the BASE determines the frame.

A frame’s design can impact how the lenses sit in front of the eyes. It’s important to consult an optician to ensure that the frames you choose not only complement your style, but are properly positioned for optimal vision quality. Frames that are tilted or turned can cause optical distortions and can be uncomfortable. These types of distortions can affect your prescription and cause a decrease in visual acuity. It’s also important to consider the impact of your frame’s design on your peripheral vision.


A lens is a transparent substance with precisely regular opposite surfaces, either both curved or one curved and the other flat (plano-concave). Different rays of an incident light beam are caused to converge on, or diverge from, a single point called the focal point, which has a fixed radius of curvature. This produces a real image of an object that can be seen when the lens is removed from the eye.

The lens is transparent mainly because of high spatial order of fibre architecture and narrow intercellular spaces that compensate for fluctuations in refractive index between the membranes and cytoplasm. The transparency is reduced with ageing because of thiolated protein accumulation resulting in unfolding and soluble loss of the high molecular weight water-insoluble (WIS) fraction of lens proteins.

This is accompanied by the formation of radial shades or zones that are dark on the Scheimpflug plot, as described in the Oxford system of lens zoning [37]. These appear as a dark band corresponding to the sulcus of C1a and the thin, non-translucent zone of C2 behind.

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