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Spectacle wearers will likely be familiar with the frustration of having to switch between sunglasses and prescription eyeglasses on a sunny day. Photochromic or “transition” lenses offer a simple alternative to this struggle: they start out clear and darken when exposed to sunlight. Transition lenses make it easy to find designer glasses that are practical as well as stylish. Whilst the technology does not appeal to everyone, many people find the convenience of these glasses invaluable. Listed below are some of the advantages and disadvantages associated with photochromic spectacles. The Advantages - Many Different Styles The rising popularity of photochromic glasses means they are available in a multitude of fashionable styles and colours. Additionally, the technology is suitable for the vast majority of prescriptions. With so much choice out there, you won’t struggle to find designer glasses with transition lenses. - Convenient Carrying two pairs of glasses on a sunny day is a pain. Transition lens technology solves this issue by combining the practicality of prescription glasses with the protective benefits of sunglasses in one frame. - Cost Effective Not only do they save you from carrying around multiple frames, they could also save you money. Never again will you need to purchase separate prescription specs and sunglasses. -Constant UV Protection It is all too easy to lose or forget your sunglasses when you are switching between frames all day long, but without sunglasses your eyes could be exposed to dangerous levels of UV rays. In fact, increased exposure to UV light is a known cause of cataracts. Photochromic spectacles solve this problem by providing continuous UV protection. You are far less likely to forget your prescription specs whilst out and about, and your eyes will surely be grateful for the added protection. The Disadvantages - Unreliable in Cars The effectiveness of photochromic lenses varies, depending on the levels of UV rays they are exposed to. Car windscreens block UV rays, and so they are unlikely to darken quickly in the car. This could leave you battling with the harsh glare of the sun whilst driving. This added worry would likely be avoided by wearing regular sunglasses. - Less Effective in Cold Weather Cold weather could decrease the efficiency with which transition specs react to UV light. A slower transition time could cause some discomfort on bright days. - Variation Between Brands Unfortunately, these kinds of lenses are not standardised and the quality of the technology varies considerably between brands. You might notice that the glass in some takes considerably longer to darken than others. Some might not darken as much as you would like, whilst others might darken too much. - Likely not Polarised Not all transition lenses are polarised. You could spend a great deal of time trying to find designer glasses with polarised transition lenses. For people who are particularly sensitive to light, quality polarised sunglasses may be a safer and easier option. Many people use and love photochromic lenses. However, for the reasons listed above, some find that this technology is not the correct choice for them. The best way to decide what will work for you is to meet with an expert optometrist. Together, you can thoroughly discuss the options to ensure that you find designer glasses which suit you and your needs. Author Plate David Paul opticians epitomise everything you want from a local eyewear specialist. Not only do they offer eye tests, they provide an expert service that includes OCT testing and advice to help you find designer glasses and much more. The team of experienced eyewear specialists and expert optometrists are there to make your glasses and contact lens buying experience the best it can be.
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