glass vs plastic lenses
I first run them under water to wash away any grit and then clean them. Speaking as a legally blind person, not only does the high-index lens still stay thick, but also distorts the hell out of your eyes. I had them replaced and again scratches appeared. Essentially, whether plastic lenses are better or glass depends on one’s requirements. Evidently due to the coating they were a confounded nuisance to keep clean. Plastic Vs Polycarbonate Lenses- Which One Is Better? They are much easier to manufacture, leading to more production hence more profits for the companies. This is only my advice as I've wasted lot of hard earned money on buying most expensive polycarb lenses. The main advantage of glass is the significantly better scratch resistance it has relative to plastic, and for some people this is their primary consideration. None but the very cheapest cameras uses plastic lenses today and that is to lower the cost for the manufacturer, not the consumer. Still, plastic lenses have mostly replaced glass lenses. Still, the basic assumption in the original post (cheap lenses = plastic elements, L lenses = glass) is incorrect. Both plastic and glass have some pros and cons and it really comes down to taste, price or just mere preference. I had bought my last pair a decade earlier and simply wanted to update my prescription and frame. There are two types -- soft and hard, also called rigid glass permeable. I've gotten a couple scratches in five years but they are really minor. In the past, plastic frames achieved their color and patterns through paint, decals, and seal coats. The life span of plastic lenses is just shorter compared to glass lenses. If your glasses weigh more than that you should consider plastic lenses again. Plastic or polycarbonate lenses are only a new way to commercialize the eye lens market. Though there are some downsides. I would only get plastic if that was the only way I could normal-looking frames. There are many advantages to plastic lenses over glass, and the extra expense is well worth it to many people. In fact, they were so heavy, I struggled to breathe out of my nose. Did you know Nikon was the first company to create the thinnest plastic (1.74 lens index) available on the market today? When it comes to the weight of materials plastic lenses are clearly lighter. You forgot to mention the short lifespan of plastic lenses and of anti-glare coatings due to scratching, which renders the lenses useless within one to three years. If good seeing is your goal buy glass. Very nice! And in a lot of cases even if the glasses end up a little heavier people still like to wear them. Although there are a variety of lenses out there on the market, the most obvious choice is between glass and plastic lenses. They are very light and therefore comfortable to wear. I have had a headache for five days now and it's from the heavy, heavy, heavy weight of the glass lenses. Plastic lenses are also known as organic lenses. I remember wondering why it wasn't being noted, and it's because all plastics claim to be scratch resistant. While a plastic lens is superior in these scenarios. But a word of caution here. http://www.shadesdaddy.com // Buying a pair of sunglasses or eyeglasses and wondering if you should get glass lenses or plastic? Both plastic and glass have some pros and cons and it really comes down to taste, price or just mere preference. The A/R coating doesn't even come with glass lenses. I personally prefer plastic lenses over glass for 2 reasons. In this article, you will learn which materials could cause... Getting Headaches? Between plastic and glass lenses, even if you were comparing two otherwise identical brand new lenses with no scratches and similar sound response (which can happen with very hard plastic lenses), there is one testing method that will always reveal the truth. With a lens in such a condition, you will probably have some visual problems. But for the sake of simplicity of this article, I will give you the results in the table. There are several formulas to calculate how much glare you could expect. I responded, "What is so safe about driving at night trying to see through scratched up lenses?" I was disappointed with my manager's answer(he's strictly polycarbonate/acetate/zyl/etc) after researching it on my own and finding this page. Plastic lenses usually wear off after time and the lens surface does not look as smooth as it was in the beginning. Do a search under "Sungazing: Open the Pineal Gland" and you will get an education. To 18 % lighter than glass lenses also leave indentations on the market the. Although they are very lightweight and fit the plastic lenses over glass, also cost spend less frames! Be treated with the highest quality sunglasses generally have glass lenses resistance and less durable unless. 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