Contact Lens Materials - HEME Mixed Materials
Using HEMA as the matrix, other monomer components are added to improve the hydrophilicity, oxygen permeability, anti-precipitation, and other functions of the lens.
American Eyewear Brand - Ray-Ban
Ray-ban glasses represent a wild, rough and bold image, full of extreme masculinity. Ray-ban glasses, which are designed for PILOTS of the U.S. Air Force, look like American soldiers and give the wearer an aura of vigor.
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.
Costs are lower for online stores.
The most fundamental reason is cost. The cost is not just the cost of the glasses, and there are many other aspects of the cost. If it is an online store, it only needs a warehouse, a computer, a customer service, which can meet the needs. And if it has the factory direct sales, then the product purchase cost is lower. The online shop needs publicity fees. For a physical store, the superior location, high rent, water, electricity, and labor costs, a variety of optometry processing instruments are valuable. There is a lot of brand publicity, decoration costs. These aspects are the cost of physical stores to pay.
Can blue glasses double up as sunglasses?
The main function of sunglasses is to keep out dazzling strong light, to reduce the eye adjustment that causes fatigue or the harm that strong light stimulation causes. Their light transmittance is very low, only suitable for use when the sun is strong outdoors. If wearing sunglasses indoors, or at dusk, or even in the evening, because the light is reduced, it will not play a role in protecting the eyes or even will increase the burden of the eyes. The Anti-blue lens is yellow-green and needs to meet the transmittance and blue obscurity. If you are walking outdoors for a short time, good blue light glasses can of course completely meet your outdoor eye protection needs, but due to the high light transmittance, it is not suitable for a long time outdoors, as the sunglasses. Because although it can block UV rays, they are not very good at the filtering of strong light. General anti-blue glasses can not be equal to sunglasses, the main function is not the same, and the use of the scene is not the same.
The glasses are stylish and have a personality, and the shop decoration has a designer style. A combination of fashion and business, the nose pads are designed with water droplets that are more suited to Asian faces. Breaking the design idea of traditional glasses, the temple is under the glasses, and the arc of the temple makes the face look small. Breaking the bottom half of the frame, the top half of the frame is more designed, with comfortable, thinner lenses.
Anti Fog Safety Glasses - Safety Goggles Over Glasses
Anti-fogging safety glasses reduce deformation, effectively prevent fogging, and avoid fogging which affects vision in use. The angle of the goggles can be adjusted in accordance with the different foreheads (30 degrees). They can use a variety of large-size myopia goggles, safety glasses. It can effectively protect eyes from saliva, sand, metal fragments, and so on.