News1 min ago
Vary Focals &bifocals
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Is there any difference? Thanks, Jersey, C,I.
Answers
Yes, bifocals have 2 lenses, one for reading and one for distance; they are cemented together to form one lens. Varifocals have one lens which gradually changes the focal length as you get to the bottom of the lens. Thus, keeping your head still, as you look downwards to read you look through the correct part of the lens for the print to be clear. It has the...
20:13 Sun 12th Jul 2015
Yes, bifocals have 2 lenses, one for reading and one for distance; they are cemented together to form one lens. Varifocals have one lens which gradually changes the focal length as you get to the bottom of the lens. Thus, keeping your head still, as you look downwards to read you look through the correct part of the lens for the print to be clear. It has the advantage that middle-distance objects are in focus, as you look through the correct part of the lens for that too. A further advantage is that there is no obvious "reading" part of the lens, so they are aesthetically better (if you care).
I tried varifocals for a month a couple of years ago and couldn't get used to them so went for separate glasses for reading and distance. Earlier this year I decided to get bifocals for general use rather than needing to have both pairs with me whenever I go out and I find that I much prefer them to varifocals.
Opticians such as Specsavers usually let you try such lenses for 30 days to see if you're ok with them.
Opticians such as Specsavers usually let you try such lenses for 30 days to see if you're ok with them.
I use varifocals but it often seems the wrong part of the lens is being looked through. That said other eye problems mean I ignore a lot of vision issues these days. Most of the time the lenses are smeared and there I am assuming it's my eyes. Roll on the day when the glasses can detect what you are looking through and at what, and auto adjust to be correct.
taichiperson - my OH has exactly the same problem and he also has a 'distance' pair for when he plays golf, so he's now got three pairs, reading, distance and transition varifocals. He now says the transitions go 'too dark' so he's thinking of getting yet another pair of plain varifocals!! You can't please some folk!!!
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