what is single pd in glasses? | KOALAEYE OPTICAL

what is single pd in glasses?

Advantages Of TR90 Frames

  • Lightweight. The weight is about half the weight of the plate frame, which can reduce the burden on the bridge of the nose and ears, and it is also comfortable to wear for a long time.
  • Bright colors. Compared with ordinary plastic frames, the color of TR90 frames is even better.
  • Impact resistance. The TR90 frame is extremely flexible, and its good elasticity can effectively prevent damage to the eyes caused by impact during sports.

Regardless of whether it is a sheet frame or a TR90 frame, they have their own advantages. You can choose them according to your requirements, Importantly, it is comfortable to wear and good-looking.


Should I wear blue light glasses when using electronic products?

However, it's not just at work that we need to consider wearing blue light glasses. We can still use blue-ray blocking glasses when we're reading a book on a tablet, watching hot new shows on Netflix, or playing games with friends. It is suggested that when you are in front of a digital device, you should wear blue light glasses to help your eyes.



Always wear or take off glasses with both hands.

Because there is no protection of the lenses ring, it is only supported by two temples. When taking off and wearing, it should be carried out with both hands, holding the temples of the frame and gently. Using only one hand will destroy the balance of the left and right temple, easy to produce deformation of the frame.


Geometric Cat-Eye glasses

Geometric cat-eye glasses are a big trend this year. They accentuate the personality and the shape of your face. If you have a square face, a geometric cat-eye frame will add some angle to your face, which can be very flattering. Cat-eye frames are both sexy and serious, drawing the image of a determined woman who knows what she wants. Choose the modern contours of Treble. Retro cat-eye black frames are a great option for women working in a business setting, as they give you a smart and mysterious look that is sure to emphasize your professionalism.



The price of prescription glasses

You need a current (unexpired) prescription to order glasses online. You will enter your prescription and select the available lens options during checkout. Prescription glasses start at about $40. Single vision lenses are free when you buy the frames, and progressive wireless lenses typically cost an extra $80 or so. Other lens options include clear lenses with no extra charge, basic tone lenses (for sun protection) with the price of $40,polarized-tone lenses (for protection and glare reduction)with the price of $50, and transition lenses (for indoor and outdoor use) with the price from $65.


The style of prescription glasses

Choose the material, and then choose the style. The width of the appropriate frame should match the distance between the two pupils to ensure that the eye can pass through the optical center when looking at things. Choose the right style according to your face shape. Generally follow the complementarity principle, such as choosing square frames for round faces and round frames for square faces. After choosing the frame, you should try it on for a while to see if the weight is appropriate and the style is suitable.


Prezzo di venditaDa
Prezzo di venditaDa


You can choose driving goggles.

The goggles partly filter the far-light from the car. Products sold online include glasses with yellow lenses and yellow translucent shades that clip onto car shades. Shades block out oncoming far-light, while glasses prevent rearview mirror glare from vehicles behind. Most of the light emitted by car headlights is short-wavelength ultraviolet and blue light. The yellow polyester blocks them while allowing the longer wavelengths of red and green light to pass through, making the headlights softer when seen through the goggles without reducing the brightness of the road and the surrounding environment.

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