col
Lifetime Member
Posts: 329
|
Post by col on Nov 2, 2012 19:02:23 GMT -5
A question for anyone that uses bifocal glasses . Do you have any problems view your computer screen I have Just picked up my new glasses. I must admit not totally happy .. I paid extra for tinting and wide field of view..And as for the seamless bifocal lenses.. Now that's a total waste of time. looking at the computer screen over 3/4 would be out or focus..and as for reading any text all that is in focus is just a couple of words it's just like reading a teletext machine a bit like looking down a tunnel with a field of view was just a couple of degrees .. Oh well that what's pissing me off at the moment..The good news is the optician is very understanding and has told me the lenes can be changed. But I'm not sure for what would be best in my situation .
|
|
Dave
Lifetime Member
Posts: 124
|
Post by Dave on Nov 2, 2012 19:11:42 GMT -5
I too have bifocals -- blended lenses. I have no problems. It may be where the focal length changes in your lenses. My opthamologist set the blend about midway because I do a great deal of reading both on and off the computer. Therefore the reading focal length of my bifocials is larger. I think any optician should know about this.
|
|
lloydy
Lifetime Member
Posts: 506
|
Post by lloydy on Nov 2, 2012 19:17:35 GMT -5
High street and big chain opticians will nearly always give you varifocals with the smallest possible close / reading element. It's cheaper. Go back and give them hell until the make it clear just how big that element is, and if it is the smallest possible tell them it's not good enough. I won't use the big chain opticians any more for this reason, they promise all kinds of deals and free second pairs. It's bullnuts, they sell cheap lenses and make massive profits. Can you tell I've had this same problem in the past?  |
|
|
|
Post by Randy on Nov 2, 2012 21:54:57 GMT -5
I went to the store and bought the strongest reading glasses I could find. Don't have to tip my head backwards anymore.
|
|
col
Lifetime Member
Posts: 329
|
Post by col on Nov 3, 2012 3:18:30 GMT -5
Thanks for the help guys
Randy been thinking of that
|
|
mickeyobe
Lifetime Member
Resident President
Posts: 7,280
|
Post by mickeyobe on Nov 3, 2012 4:31:54 GMT -5
I tried the seamless bifocals several years ago. I could not use them. Stairs never seemed to be where they should. My peripheral vision was so severely limited that I could not drive. The merging of the two images was bothersome. My optician exchanged them for regular bifocals and suggested that for computer use I measure the distance from the screen to my face, take some reading material to my drugstore and try their $10.00 reading glasses. There was a revolving rack with dozens from which to choose. I selected a pair marked 1.5.
I still use them. Everything is sharp from 15" to 33".
Since I usually misplace glasses I now have several pair scattered around the house where they are most likely to be needed.
Mickey
|
|
|
|
Post by Peltigera on Nov 3, 2012 4:37:08 GMT -5
I use old fashioned bifocals with a very definite line part way up. I have to tilt my head slightly to see the screen properly - not a problem for reading forums like this but gets tiring when using Gimp. When I have my eyes tested in January, I am going to get some special computer glasses as well as the bifocals - I cannot use off-the-shelf reading glasses as my two eyes are too different.
More problematical for me is using binoculars - the line ends up half way up the field of view.
|
|
Stephen
Lifetime Member
Still collecting.......
Posts: 2,718
|
Post by Stephen on Nov 3, 2012 6:55:57 GMT -5
I think the best solution if the prescription is the same for both eyes, is a dedicated non bi-focal reading strength pair for just the computer, or if the eyes differ, then a special pair. Bi-focals can cause extra eye strain struggling to focus, and even slight neck strain as you move the head a lot more. The seamless type will not help with screens, if one parts is in focus another to bound to be out. I use a selection of strengths for close up work, clock making etc., and mild strength reading for computer screens when close.
The trouble for some with the cheap reading glasses is they start at 1 dioptre, when really .5 would be better, they go up to 3 dioptre usually.
|
|
|
|
Post by olroy2044 on Nov 3, 2012 10:51:49 GMT -5
I've had just the opposite experience with blended lens glasses. Mine are ground with a fairly large "reading" area. The change from the distance prescription to the reading prescription is gradual and seamless, giving me , in effect, a set of blended trii-focals. I adapted almost instantly to them and would not even consider any other type of glasses. I just assumed that this was the norm, but apparently I was wrong. (never happened before!! ;D) However, I did spend quite a bit of money on them, but have never regretted it. The only issue I have with them when using a camera is that I got the light sensitive lenses and they get so dark in direct sunlight that even my Fujica's finder looks dim!  I am due for a new prescription, and I will get the same type of lenses again, and have them put in the same titanium frames, which have proven virtually indestructible. That's saying a lot, because I am extremely hard on glasses! |
|
|
|
Post by Randy on Nov 3, 2012 12:07:39 GMT -5
I bought mine at a store called Family Dollar. For $2.89 it was a gamble that didn't cost much. Most of us waste more than 3 bucks on coffee and doughnuts. lol
|
|
mickeyobe
Lifetime Member
Resident President
Posts: 7,280
|
Post by mickeyobe on Nov 3, 2012 17:00:58 GMT -5
I cannot use off-the-shelf reading glasses as my two eyes are too different. More problematical for me is using binoculars - the line ends up half way up the field of view. I had cataract surgery a year ago. One eye is adjusted for distance and the other for close. I was concerned but the images merge and everything seems sharp and correct from about 21" to infinity without glasses. I prefer glasses when reading. I guess I am unconsciously straining my eyes when I get close enough for reading. The reading glasses I mentioned were purchased long before my surgery. Both lenses are 1.5 but I see perfectly in the 15" t0 33" range. As for binoculars. I take off my glasses. Focus the left eye by turning the centre wheel and then adjust the right eyepiece. After setting everything is in focus for both eyes at any distance by adjusting only the centre wheel. The binoculars are old Bushnell 7x50 Bino-Foto. Great when I am on a boat. Mickey |
|
|
|
Post by pompiere on Nov 3, 2012 19:30:36 GMT -5
My first pair of no-line bifocals worked pretty well after a few days of acclimation. We were building a house and going down makeshift stairs was an adventure. When I got my second pair of no-lines, I had so much trouble that I thought they had made the prescription wrong. After several tries by the optician, the doctor tried an adjustment. It was like he had put in new lenses. The doctor can have the right prescription, but it is the optician who takes the measurements to set the lenses in the frames that can have a huge impact on how well the bifocals work.
I have a set of binoculars with long eye relief that are made for eyeglass wearers. I don't take my glasses off for cameras, but sometimes I have trouble seeing the info displayed at the bottom or sides of the viewfinder.
|
|
lloydy
Lifetime Member
Posts: 506
|
Post by lloydy on Nov 3, 2012 19:41:17 GMT -5
I've had just the opposite experience with blended lens glasses. Mine are ground with a fairly large "reading" area. The change from the distance prescription to the reading prescription is gradual and seamless, giving me , in effect, a set of blended trii-focals. I adapted almost instantly to them and would not even consider any other type of glasses. I just assumed that this was the norm, but apparently I was wrong. (never happened before!! ;D) However, I did spend quite a bit of money on them, but have never regretted it. The only issue I have with them when using a camera is that I got the light sensitive lenses and they get so dark in direct sunlight that even my Fujica's finder looks dim! I am due for a new prescription, and I will get the same type of lenses again, and have them put in the same titanium frames, which have proven virtually indestructible. That's saying a lot, because I am extremely hard on glasses! That's the important thing if you are going to get varifocal lenses ( no line) Once I'd demanded they change the tiny reading area lens for a bigger one I had no problem at all with them, I wear them every moment I'm awake. Also beware that the shops will try to fit varifocal lenses into fashionable small frames, they don't work either, to get the lenses into the small frames they make the reading area tiny, and when you complain they say "well there's nothing we can do because you've chosen a small frame sir" I got bigger frames and lenses, it took a while and a lot of arguing with the manager, but I got them. ;D |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 3, 2012 23:10:43 GMT -5
I have worn blended lens bifocals for years. My only problem is constantly tipping my head back to see the screen clearly. I had a pair of single vision lenses made specifically for working with the computer when I was working but never liked them as I would forget to take them off and would find myself driving down the street with everything passt the instruments blurry.
|
|
|
|
Post by philbirch on Mar 30, 2014 17:00:26 GMT -5
I... Since I usually misplace glasses I now have several pair scattered around the house where they are most likely to be needed. Mickey I have seven pairs within arms length, three in the bedroom, one on the cabinet in the hallway, one on the bathroom shelf, one in my jacket pocket and one in the spare room on the window sill. I hardly use my bifocals for close work. I have one pair for long distance and reading. These are my photography glasses. I can use them all day, |
|
I am due for a new prescription, and I will get the same type of lenses again, and have them put in the same titanium frames, which have proven virtually indestructible. That's saying a lot, because I am extremely hard on glasses! 
