If you wear prescription glasses it is very possible that you feel lost whenever it is time to change the graduation or do eyeglass lenses replacement. The first thing I want to tell you is that it is completely normal for you to feel that way since the current advertising in the optical sector is very confusing (for being soft). In my view of confidence I will advise on the type of lens that will suit you best depending on the type of graduation you have. Choosing a good optics with good professionals is the key to not messing up, but I also want you to have a minimum of practical information that will help you in this process and give you security in your decisions.
How to choose the best glasses for your prescription glasses?
You can go with the lesson learned before going to change, but now, we are going to talk about the different types of ophthalmic lenses that exist and I will give you 7 practical tips to know to choose the most appropriate for your glasses and your graduation. You will avoid errors and dislikes. Is it better to buy organic or mineral lenses?
The first thing they will ask you is if you want the lens to be of organic material or mineral material.
Glass or mineral lenses are very fragile
It is the type of lens that many people know as “authentic crystal lenses” because if it falls it breaks. It also has another problem, which weighs more than the organic material. The advantage it has is that it is scratched less than the organic one. But still, it is increasingly out of use because it gives worse results than the organic one. In addition, the danger that these lenses break near the eyes due to any blow, has made this type of material for ophthalmic lenses is currently prohibited in many countries.
Organic crystals or lenses are much more resistant
It is the type of lens that people know as “plastic lenses”.
It is quite lighter than the mineral material, but it is scratched more.
It is the material that is put more today. What are hardened and anti-reflective treatments?
The hardening of the lens is a treatment given to the lenses so that they scratch less. This does not mean that the lens is immortal, if you throw it to the ground and step it will most likely end up with a few scratches, but with this treatment we get them to last longer intact.
If we make a lens without hardening and then we regret it is not possible to put it later, since this treatment can only be added at the time of manufacture of the lens.
The anti-reflective is a treatment that serves to give greater quality of vision eliminating the reflexes. If we do not put anti-reflective, it would be like, for example, to see through the glass of a glass, full of reflections. In addition also makes from the outside we see better aesthetically as eliminating the reflexes we see our eyes better.
The way to know if your glasses are antireflective would be to check the reflections produced by the lens. If the reflections are white, do not wear anti-reflective. But if the reflections are colored, usually purple or green, the lens is antireflective. This treatment is recommended for all types of graduations. I have sometimes been asked if being a spectacle used only for reading is necessary. The answer is a resounding yes, because if we have annoying reflections in our reading, we will tire much more the view.
A new improved treatment has recently come out that serves to protect against blue light. This light is the one that comes to us from computer screens, tablets, mobiles and other electronic devices being very harmful to our eyes. This type of treatment causes the lenses to be seen with a bluish reflection and also have a residual yellowish hue. Do not be afraid of that bluish reflection when they give you your new glasses, as it is normal.
Should I buy photochromic or color change lenses? What are they and how do they work?
The photochromic treatment makes the lenses darken with the sun (activated by ultraviolet rays). Thanks to the new improvements in this treatment, it has been achieved that the change from transparent to dark is practically instantaneous and that the lens is (in general) much more aesthetic. With a photochromic lens we get two glasses in one, the sun and the graduated. When you go from outdoor to indoor, it is slower to react and can take up to 3 minutes to disappear all the color it had on the outside. Special note for drivers: This photochromic treatment is only activated when you are driving because the treatment is not activated in the car. The windshield of the car filters these UV rays. If you drive a lot you will find it better to buy some good polarized graduated sunglasses. You might need to do ray ban lenses replacement.
Are you interested in putting small glasses in your glasses? Well it depends … I’ll explain it here.
When we talk about lenses or reduced crystals we do not mean that they reduce the lenses by slicing them. They simply use materials of different refractive index that manage to produce the same graduation being thinner. The material with the most basic refractive index is 1.5 and is used for the lowest graduations. What few people know is that this type of material does not include 100% UV (ultraviolet) protection.
Important: Refractive index lenses are higher than 1.6 if they include the UV protection of almost 100%. Therefore, if in addition to carrying the correct graduation and have a lens as aesthetic as possible and if you need to be protected from radiation you need to ask for index lenses higher than 1.6. This protection is not complete and therefore it is necessary to use also sunglasses if you are exposed to UV rays.