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Almost everyone in life can't get away with one thing, either wearing glasses on their own or having their own children and elders need glasses. Many people are in a difficult situation when they wear glasses, and they walk into the glasses store, at prices ranging from hundreds to thousands of times, and the shopkeeper crashes into an introduction。
Some felt that glasses were a mirror and a frame, similar to the two or three thousand that were purely iq taxes; others wore cheap glasses for a long period of time, feeling sour and blurred that the number of years rose and forced to change expensive glasses。
In fact, the 300-dollar and 2,000-dollar glasses on the market are not simply brand premium differentials, nor are the merchants deliberately raising prices to harvest consumers. There is a real layer of cost, from raw materials, manufacturing processes, wear experience, eye-protective effects to durability, to the cost of leaving behind the red marketing of the web, door shop renovations and brand advertising。
Today, despite all the exaggerations and false propaganda, the real difference between the two price glasses is objectively broken with the white words that ordinary people can understand, telling people what to do with different eyes, avoiding the blind cost of stepping on the pits, and avoiding the brainless spending money。
Many people have always had an error zone and feel that the lens structure is simple, that the technology threshold is low, and that the cheap and expensive effects are the same. This idea applies only to people with low levels and very few eyes on a daily basis. If you look at a computer and a mobile phone for a long period of time, you can notice the difference in the experience caused by the high-level, high-scattered population, and you can put it on for a week。
Let's start with the core lens, which is the soul of the glasses, 80 per cent of which is determined by the lens, and the frame is the auxiliary part, which is the largest price gap。
The 300-center lenses are essentially market-based generic resin raw materials, which are low-cost and simple in refining. The lens is highly impregnated and has a low perforation rate, with minor refractions occurring when natural and light passes through the lens. The distance will not be much felt, but the distance will be long, close enough for the eyes to be able to bring a sense of self-impression and light。
Moreover, the colour-dispersion control of low-cost lenses is poor, in short, when driving at night, looking at street lights, looking at car lights, the light is scattered, there is a heavy shadow, there is severe dizziness, and at night the sights are blurred. The density of the raw materials is uneven, the lens is shaped, the surrounding area is highly aberrational, we wear glasses to look at things, we sweep the remaining light to the edges, we have deformations, we've been wearing them for a long time, the eyeballs are unwittingly modulated and dizziness is normal。
And when it comes to lens plating, it's a key to the experience that most people ignore, but it affects the wear. There are very few membranes for valorized glasses, most of which are basic one-sided, rough and weak. Daily normal wipes, wind-blowing dust and dust frictions lead to scratches, defilms and yellow hairs in a short period of time。
It is usually oily on the face, oily on the hands, and completely unclean on the lenses, and the water stains are always left behind, which is blurring. The anti-dust, anti-reflective, anti-blue light functions are almost negligible. Under indoor lights and computer screens, mirrors reflect heavily, not only by looking at things themselves, but also by looking at your eyes, wearing them for a long time, and the speed of eye fatigue doubles。
A 2,000-priced lens using high-purity resins or mr-based high-end materials, which are of high standards of purity, have a clean internal structure, have no impurities, and have full permeability. At the same level, the lenses are thinner and more flat, especially at heights above 600 degrees, and the difference is visible and not as heavy as the cheap lenses。
High-end lenses are adapted to professional colour dispersion, with precise optical parameters and a uniform global view, both at the centre of the lens and at the edges, where the object is not deformed or deformed. Night vision clarity has increased significantly, street light light has been concentrated on non-proliferation, long-term eye use and eyeballs need not be adjusted repeatedly, and acid swelling and drying will be significantly reduced。
The membrane plating process is much different, with expensive lenses that are multilayered composite plating, shaving, oil-proofing, blue light, dizziness, dust-proofing, anti-uv multilayering, and plating strong. Day-to-day wiping with glasses is not easy to create scratches, oil stains on the surface are clean and worn over a long period of time for a year or two, and lenses remain open and bright and do not quickly wear yellow. Long-term exposure to electronic screens can effectively weaken harmful blue light, reduce sustained eye irritation and reduce visual fatigue from the root causes, which is not psychological, but a practical effect of optical material itself。
After the lens, the frame, which appears to be just the appearance, affects the wear of comfort, the pressure of the nose, the life of the glasses and the health of the eye。
Three hundred dollars of mirrors, most of the material consists of recovered alloys, ordinary plastics, and poor plates. The materials are of poor hardness, low resilience, simple out-of-plant process, welding is rough and the edges are not prepared. Problems arise when they are worn over time: mirror leg deformed, mirror frames loose, nostrils hard, long nose-pressed beams, sunholes and red bruises on the back of the ear。
There is also a fatal problem with poor-quality alloy lenses, which are highly oxidized, sweaty, humid, rusty in just a month or two, skin contact with non-ferrous metal components and, in many cases, allergy and red pox. And this mirror has a poor metamorphosis, it's crooked, it's tilted, it's specular, it's skewed, it's missighted, and it only increases faster。
The 2,000-dollar frame is basically pure titanium, beta titanium, medical tr90 and high-end import plates. The material is light and soft, weighs only half of the normal frame, wears it for a long time, has no sense of oppression, and wears it all the time without pain。
The process is finely grinded, the edges are smooth and the skin is smooth, the welding is solid and non-breakable. It is highly resistant to oxidation, sweating and wearing for long periods of time, without rusting paint and without skin allergies in sensitive muscles. Stereotyped effects are stable, daily small bumps are not tilted, standard wear angles are always maintained and eye burdens are not indirectly exacerbated by mirror deformation。
In addition to materials and processes, there is an invisible, yet most visible, gap: light accuracy, which is also the key point where many people spend money to step on the pit。
The flat-cost mirror door store, 300-dollar set, is basically a simple machine for light measurement, with simple finishes directly processed lenses, regardless of eye habits, eye scenes, eye coordination, dispersive axes. Machine data are only basic references and are per se subject to errors, with mirrors directly based on this data and lens parameters that do not match their own eyes。
Many people wear cheap glasses, wear them more and more, see things for long periods of time and become dizziness, blink more dry than their own eyes, do not pass the parameters, and the eyeballs have been forcing the wrong lenses, with long-term downsliding eyesliding and increasing light。
High-priced mirrors, with a large proportion of the core costs being specialized fine light testing. In combination with your eye view, the glitter sits in office, students read books, outdoor eyes, separates measurements, finely adjusts the eye balance, pupils ' distance, dispersive axes, and regulates the error to the minimum. They are designed to fit their eyes, their eyes are relaxed, their eyeballs are free of force, their eye time is used equally, their fatigue is significantly reduced, and their effective delay is increased, and cheap mirrors simply cannot。
Speaking of which, a lot of people wonder, 2,000 glasses are so good, don't they have a little premium? Objectively, any commodity has a reasonable premium, but we have to make a rational distinction between what is a practical value and what is a redundant premium。
It is true that 2,000 glasses include the cost of shop services, brand operations and after-sales security, but the proportion is not exaggerated. The real bulk of the expenditure is spent on the mirror base, membrane plating, frame mass, fine light testing, fine grinding。
The 300-dollar glasses, which compress all costs, cheap raw materials, streamlined processes, and light-screening can only meet the minimum requirement of “readable” and not “comfortably worn, unharmed, durable”。
But it also reminds everyone that not all people must buy 2,000 glasses, blindly pursuing higher prices and equally waste money. We can only spend the least and achieve the best results if we are precise in our own circumstances。
If the limit is within 400 degrees, the daily eye is low, the computer phone is not used for long periods of time, only to walk, look away and wear occasional glasses of $300 to $500 is sufficient. They are small in their own eye loads, they are not susceptible to fatigue, they are slow to wear and tear, and they are replaced once a year at very high value, at no cost。
If the limit is 400 to 800 degrees, the workmen, the student party, if they read screens and books for long periods of time every day, have a high eye strength and do not have to go straight to 2,000, 1,000 or so medium end lenses with light measuring frames, is the price for sex against the ceiling. Optical processes, membrane plating and light testing meet standards that mitigate visual fatigue, moderate thickness, high durability, avoidance of redundant brand premiums and cost savings。
If the degree is over 800 degrees, the altitude is dispersed, the eye is sensitive, the eye is often dried and there are many eyes at night, it is recommended to choose between 1,500 and 2,000 glasses. High-altitude lens optical requirements are extremely high, low-cost lenses are thick, deformed, visual dyslexia, long-term wears can deepen rapidly, and high-end ultra thin lenses + precision light testing are the most cost-effective options for protecting eyesight。
A lot of people spend their whole lives with glasses. They are considered to be consumables and can save money. They tend to change cheap glasses every year, keep looking at them rising, re-spectrum them more frequently and over time, costing more than a pair of good glasses, and causing visual damage。
The true mirror logic was never to look at the price, but at the load and the conditions of the eye. There is no need to pay for the brand logo, net red premium, but also not for the sake of saving money at the expense of light accuracy and mirrors。
Glasses are optical items that directly affect the eyes and are not ordinary decorations, fit, clear, comfortable, eye-protecting, the core criterion。
Seeing here, i'm sure everyone can tell the difference between the different price glasses. Consider whether you've been wearing glasses for years, and you've increased the frequency of eye acidity, whether you've had bad eye habits or wrong lenses and configurations from the beginning. The comment area can say that you've had your degrees and mirroring experience, and we'll talk about how ordinary people can fit their glasses without poking。
