A friend of mine, just about 57 years old told me she has to have cataract surgery. It is a complication from a previous surgery she had several years ago to correct a different problem. She decided to get trifocal lenses which led me to ask what on earth these are. She said it corrects near, medium and far vision. Apparently medium vision is a viewing area an arm's length from the face. Have you heard of trifocals?
Yet another friend decided to do a DNA test to trace her ancestry and health. She said it took her a good 2 hours to collect half a test tube's worth of saliva which is required for the test. That was surprising. I wonder if most of us would have that problem?
Yet another friend decided to do a DNA test to trace her ancestry and health. She said it took her a good 2 hours to collect half a test tube's worth of saliva which is required for the test. That was surprising. I wonder if most of us would have that problem?
17 comments:
I have not only heard about them, but I got a pair. The top portion was for distance, the middle line (and that's what the problem was, it was a thin line only) was for computer distance, the bottom for reading. I spent too much of my time, tilting my head north and south trying to find the middle computer area. After a while I just gave up on them.
I didn't realize the DNA tests required that much saliva, but I guess it makes sense...
That's fascinating about the DNA testing. I had a pair of trifocal glasses a few years back but I could never get used to them. I tried really hard but had to give up eventually.
I wear glasses like that. I have had lots of OPs for repairing my retinas which led to the need for cataract surgery very early. My glasses are 'continuous', which means there are no lines in them and you have almost no problems adjusting to them. Have a great day, hugs, Valerie
I have heard the term 'trifocals' but wasn't sure what they were.
oh that is interesting and Valerie-Jael's comment is interesting as well,
I think I could have the 1/2 a tube in no time unless it is a hot day and I am up moving around a lot. Trifocals..never heard of them. I don't even use bifocals. I have a pair of glasses with them in there but I have never been able to adjust to them so I just use my distance for driving and movies...and readers for the closer, smaller stuff.
I have never heard of trifocals! I really hope I never need any kind of multiple focal lens...I'm bad though I don't even wear my glasses when I should!
Not heard of trifocals, but I do wear varifocals!
All the best Jan
What did people do in the old days? Thank God, my eyes are normal.
Gathering saliva is hard. I did it when I had menopause.
Re: lenses. Mine are called progressives, and switch gradually from far to reading in the bottom of the lens. There is no clear division, though. Hubby just has 3 paris of glasses!
I have never heard of trifocals.
Never had a DNA test either :)
Happy Belated Birthday 🎂🍰🍦
those DNA tests are often hit or miss sadly, you really need to do your research to make sure you get one that actually does work properly
Praying for your friends.
God bless.
Jan those sound like trifocals
I never had a problem with spitting in the one I did.
Hi Christine, I think they are so very, very similar.
I checked it out on Google because I found it quite interesting
Trifocal https://en.wikipedia.org/wiki/Trifocal_lenses
Varifocal (sometimes called progressive)
https://en.wikipedia.org/wiki/Progressive_lens
This is why I enjoy blogging, you never know what blogging friends are going to post and it so often results in wider knowledge. Thank you.
Once again Happy Birthday Wishes
All the best Jan
Trifocals - just got them. So far, so good.
Have never done the spit test.
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