You may need to make this adjustment to glasses right out of the box if your glasses don t sit straight on your face. Just place your glasses right on top of the material that s over your nose and make sure they don t slide off.

How Are Glasses Made Banton Frameworks

A secure fit will keep the warm air from escaping through the top of the mask.

How to make lenses for glasses. Simply widen the plastic nose pads using your thumbs until the frames fit comfortably. If your frames are metal you won t need to apply heat. 10 if the lenses require additional grinding the process is done by hand using a mounted power grinder.

In other words for a given eyeglass lens power a lens made of a material with a high refractive index will be thinner than a lens made of a material with a lower refractive index. Once you ve soaked the arms of your glasses in warm water for 30 60 seconds gently apply an upward and outward pressure on the end of the arms to achieve a more relaxed fit. Wet your glasses then lather some soap on the lenses.

Then gently rub your fingers over both sides of each eyeglass lens to loosen any dirt. Simply bend the temple piece at the hinge. Put the eyeglasses in the bowl and rub the lenses with your fingers.

Place the glasses in the soapy water so they re submerged. If the rest of the eyeglass frame is clean you can just lower the lenses into the water. If you wear plastic frames.

Wipe your glasses down with the microfiber cloth. If you wear metal frames. If you can pull your mask up higher on your nose you can use your glasses to seal it and shape it to your face.

Align your lenses by bending the temple piece down on the low side. The refractive index of current eyeglass lens materials ranges from 1 498 cr 39 plastic to 1 74 a specific variety of high index plastic. Spray your glasses on both sides with cleaning solution.

Use distilled water instead of water from a faucet if there s hard water in your area. Water flows over the lens throughout this process. The machine grinds each lens to its proper shape and places a bevel around the edge of the lens so that the lens will fit the eyeglass frames.

Always wash your hands with soap and water first remember scrub for 20 seconds two rounds of happy birthday before you rinse.