As your vision changes near tasks and the computer can become a struggle and you may find that wearing a progressive lens design is more comfortable and far more convenient than two or three pairs. They are a different design to Bi-focal lenses, which as the name implies Bi-focal gives you two foci.
Normally your Distance and Reading prescription, but this can be Dispensed specifically to satisfy different criteria. You could have your computer prescription in the top and read in the bottom or your distance driving prescription in the top and intermediate dashboard prescription in the bottom. The need to have different prescriptions to correct different visual tasks is common from when you are in your forties. We think there is some correlation between the need for this type of vision correction and the number of candles on your birthday cake. But we wouldn’t say that!
If you are new to Progressive Lenses it is normal for you to have an adaption period Like most things in life some people assimilate changes more quickly than others.
Frequent Observations By some Patients
Skew and Sway” in your vision or loss of clarity when looking to the side of your lenses
A disoriented feeling when in a dynamic situation, Walking, dancing cycling
A distortion of text/print or blurred vision at a near reading distance.
Raising your head upward ” excessively” to obtain sharper vision at a computer and reading lengths.
Every Progressive lens is designed on a similar optical principal by creating a “Progressive Corridor” of vision which is calculated from your eye position within the specific frame dimensions which you were guided in selecting by The Dispensing Optician or a trained Optical Assistant.T his zone is where your optimum vision is calculated.
Your prescription in the lens is “progressive” hence the generic term. ( PALS Progressive Addition Lenses, referred to as Progressive Lenses.
(There is a myriad of industry names and commonly used terms including Varifocals, Multi-vocals often wrongly referred to as Bi-focals, which as the name implies is “two foci” (focuses at two points) and not any type of progressive lens at all.)
Your distance prescription in the top of the lens slowly progresses downward through arm’s length, intermediate vision to your reading zone in the bottom area of the lens.
Your vision can become more blurred as you look obliquely towards the periphery of your lens, this is due to “unwanted aberrational blur” due to the change in prescription powers this occurs at the edge of the lenses.
The most up to date sophisticated lens design virtually eliminate this unwanted phenomenon. So far there isn’t an Ophthalmic Laboratory that has been able to defy The Laws of Physics and Mathematics, but they are getting very close to creating Progressive lens designs which provide virtually no peripheral compromises.
Initially, you will need to adapt to the difference in your peripheral vision and will normally require slight changes in your horizontal head and eye movements. Adaptation to your new lens progressive lenses will increase with time as you become more accustomed to your new glasses.
Do not interchange between your old and new spectacles
Wear your new prescription constantly throughout the day
The fit and adjustment of your new progressive spectacles is key to your adaption Wear your new glasses at the position the Dispensing Optician has set them, some people habitually, put their glasses in any arbitrary position on their face, especially if previously they were used to wearing single vision reading spectacles, where the tendency is often for people to wear them halfway down their nose so they can look over the top of them to see better at distance.
Point your nose at the print and gradually raise your chin up and look down, when you want to read.
We are here to guide you through it and most people adapt very readily and join the many millions of progressive lens wearers around the World who wear their Progressive glasses without a seconds thought.
For most people, the adaptation period will only last a few hours. Some individuals need several days or even weeks before they feel completely comfortable.
It is important to note that everybody is different and will have different visual experiences, especially with Progressive lenses.
The fitting of your Progressive spectacles is vital to your successful adaption. It is key to ensuring you are getting the optimum vision. The frame and lenses are an optical marriage which needs a carefully selected suitable frame which makes allowances for the parameters of a Progressive lens. This selection is the starting point.
If your new progressive spectacles aren’t fitting quite right or they keep slipping down please drop in so we can readjust them by one of our Dispensing Opticians. or trained Optical staff.I f you have been wearing Progressives for several weeks or longer and your vision feels uncomfortable in any way, please call into the practice and have a chat with us. There are a small percentage of people who simply just can not adapt to progressive Lenses, they are not for everyone and if that is the case it’s not the end of the world. At our practice, we have a policy that at no extra cost we will find a different optical solution to satisfy your visual criteria where technically possible.