How to Find Reading Glasses Strengths?
Some reading glasses also come with strengths. So, how do you know what strength reading glasses to get and how to find reading glasses strengths? The strength of all reading glasses is measured in dioptre, with units increasing by 0.25 dioptre depending on the power of the lens.
The reading glasses strengths range from +0.75 dioptre to +3.00 dioptre. Both lenses have the same power which is indicated by a permanent marking on the inside of the frame or with a removable sticker on the lens. So, you can find the reading glasses strengths of the glasses.
The important thing you need to notice is that when higher the number, the greater the power of the lenses is when choosing reading glasses. So, glasses with a marking of 1.0 are low power while those marking +3.0 are high powered.
Common sense of glasses maintenance
Do not wear glasses when doing strenuous exercise to avoid deformation caused by knocking. Take off your glasses when sleeping or lying on your desk to avoid distorting your glasses. Use special glasses cloth to wipe glasses, and can use water and dishwashing essence to clean. Avoid using paper towels, handkerchiefs, or clothes. Deformations of memory materials are not often demonstrated to prevent breakage of joints or welds. If it is uncomfortable to see things, or the frame appears obvious uneven, you need to take it to the optical shop to find a professional to adjust.
Proper massage
Proper massage can not only relieve the fatigue of the skin that supports glasses but relax the eyes. Take time each day to gently massage the marked area of the nose pad for ten minutes. Try not to wear glasses all the time. You can switch between contact lenses and glasses. In this way, over time, the nasal plate marks will gradually disappear. Hot towels can be used to warm the skin, which is helpful to blood circulation to the skin and slowly eliminate indentation.
How to Test Blue Light Glasses (Amber and Red Lenses)
This section will show you how to test blue light glasses with amber or red lenses.
1. The Black and Blue Squares Test
1. Prepare black and blue paper.
2. Wear your blue light glasses after sunset and check whether both paper appear black.
3. If they do not appear black, your blue light glasses can’t block all blue light.
2. RGB Color Chart Test
1. Prepare an RGB color chart as follows.
2. Wear your blue light block glasses and look at the chart.
3. After wearing blue light blocking glasses, if the B section becomes black and the G section becomes darken, it shows that your blue light glasses block blue light and some filter some green light.
4. The less bright the green circle with your blue light glasses, the better they are.
Besides the above ways, you can ask the professional optician to perform a professional blue light glasses test, which would be more reliable. After that, you can know whether your glasses work effectively to block blue light.
What’s more, if you want to purchase a pair of effective blue light blocking glasses, you can try Koalaeye Optical. It is cheap and provides free shipping services.
How Do Blue Light Glasses Work?
Blue light has a short wavelength which makes it easy to penetrate the eyes. This means that almost all visible blue light rays can pass through the cornea and lens to the retina. Wearing blue light blocking glasses can help you to filter the harmful blue light.
Do Gaming Glasses Work?
Gaming glasses are similar to computer glasses. They work by countering the hue of the blue light with a yellow tint or amber tint glasses. Clear-lens gamer glasses are available, too. So, gaming glasses can help reduce eye strain and other effects of blue light caused by excessive screen time.
How to do with it?
Wash your glasses once a week to avoid future accumulation. Remove the green goo with a soft cloth, a cotton swab, some mild dishwashing liquid, alcohol, and a soft-bristled toothbrush. Ultrasonic cleaning machines can remove dirt and green mud because vibration can do with micro-mud. This device is available in most optician stores, so you can have your glasses cleaned there. Just like anything we use, glasses need to be replaced. It is recommended that you replace the nasal pad with a new one every 6 months to keep it sanitary.
