Announcement

Collapse
No announcement yet.

What happened to my glasses?

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • What happened to my glasses?

    When I buy new glasses I always take along an old set of frames and have lenses made made for reading or close work. No need to always lift my head back to see through the bi-focals. These reading glasses last me for years before the frames break and I start over with another old set of frames.

    My last pair of reading glasses are barely 8 weeks old and I noticed they became pitted overnight. I wondered what I could have done to them. My oldest pair of reading glasses are still not pitted after hours of surface grinding. Just fine scratches from cleaning.




    These new glasses seem to get worse over time. The lenses are plastic (cheaper). I'm wondering if they are defective. I looked at the pits with my centeringscope and could see the pits are craters and do not appear to be caused by impacts from chips or grit. Worse yet, there are pits on the inside of the lenses as well. Outside is worse.

    Anyone have some ideas.

    Larger pic
    http://img.photobucket.com/albums/v3...espittied2.jpg

    Outback
    So much to learn, so little time

  • #2
    Have you been welding with them on ?Some people just for a quick weld close their eyes for a few seconds it looks like some small spatter burns.Alistair
    Please excuse my typing as I have a form of parkinsons disease

    Comment


    • #3
      That's what happened to my shop window when I moved my grinder in front of it. You sure you didn't have them laying on the workbench behind the grinder?
      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
      Thank you to our families of soldiers, many of whom have given so much more then the rest of us for the Freedom we enjoy.

      It is true, there is nothing free about freedom, don't be so quick to give it away.

      Comment


      • #4
        For what ever reason, I get eyestrain easier from scratched and pitted optics than most people that wear glasses. I wish it were not so but se la vie.

        I am OCD about a specific procedure for cleaning my eyeglasses. In the past it has always given me a year at least of clear optics. Honestly it gives me almost two years at which time I get scolded by the doctor for missing a yearly appointment. Why go if I can still see.

        A recent set didn't get me 6 months before they looked similar to yours, and I took them back. After a bit of complaining, comparing my previous lenses (which I keep) and looking in my file to show them when I had been in for a checkup they reluctantly made me a new pair. They told me that I really should get the scratch resistant lenses. I asked them to refer back to my file where they found that I had paid for scratch resistant lenses when I bought them last time. These new ones have lasted about a year and look bad now. I have used the same big name store in the past but I may not again.

        I think that they have switched materials or suppliers. There was a comment made by the doctor that led me to believe that something was different. They told me that I was cleaning the lenses wrong. When I explained that I clean my glasses the same way I would clean any type of optic lens, which led to my amateur astronomy hobby being brought up. Thats when the doc perked up and a new set of eye-ware was ordered.

        Now my safety specific glasses look great and I bought them when they ordered my second free pair of street glasses. I wonder if I can specifically order my street ware with safety lenses in them.

        I cant say for sure but something is different. In this new world of cost reduction and higher profit margins there is something that has changed, exactly what I don't know, but if some one can tell us for sure please do.

        I have decided that my next pair will will be scratch resistant and I will be watching them closely for issues. I also plan to buy them close to the house because I bet I'll be making a few trips to the store.

        Good luck.
        rock~
        Civil engineers build targets, Mechanical engineers build weapons.

        Comment


        • #5
          Looks like impact damage, have you been subject to a solar wind??

          Regards Ian
          You might not like what I say,but that doesn't mean I'm wrong.

          Comment


          • #6
            Originally posted by Circlip
            Looks like impact damage, have you been subject to a solar wind??

            Regards Ian
            leftovers from Shoemaker-Levy 9? One thing I always did with a safety glasses scrip is to have them ground to halfway between my normal and bi-focal scrips. As I could not wear either for doing machine work.
            Forty plus years and I still have ten toes, ten fingers and both eyes. I must be doing something right.

            Comment


            • #7
              Originally posted by rockrat
              For what ever reason, I get eyestrain easier from scratched and pitted optics than most people that wear glasses. I wish it were not so but se la vie.

              I am OCD about a specific procedure for cleaning my eyeglasses. In the past it has always given me a year at least of clear optics. Honestly it gives me almost two years at which time I get scolded by the doctor for missing a yearly appointment. Why go if I can still see.

              rock~
              Rockrat- What is your procedure for cleaning your glasses? I seem to do more harm than good when I clean mine.
              Rich

              Comment


              • #8
                See post #6.

                http://bbs.homeshopmachinist.net/showthread.php?t=35334

                rock~
                Civil engineers build targets, Mechanical engineers build weapons.

                Comment


                • #9
                  I'm with Circlip. Have you been anywhere near Cern?

                  Comment


                  • #10
                    I tried plastic lenses, after a short time they looked worse the photo.
                    That was an expensive lesson. After that I have always had my lenses made from glass. They will last until I need another proscription.

                    Comment


                    • #11
                      Just a first thought.

                      The lenses might have some wonder coating on them. You have been using some chemical that is eating away the wonder coating. Something in the oils your are using, for example ATF which will take off paint, is eating the lens.

                      Comment


                      • #12
                        I have used Lenscrafters for years. They are more expensive....However they have an extra scratch resistant coating. I currently have a pair that are about five years old. Over the past year I have finally started to get a couple scratches on them...Skittering across the asphalt at the track has finally caught up with them. As well as shop hazards. I will be going back shortly to get new ones.

                        A side note, I spent the money for the flexible frames, I have not had a single problem with them. I have sat on them, been hit in the face with a wrench or two, fallen asleep wearing my glasses a good number of times, even steped on them a time or two...Never had to bend them back, never a problem with fit!

                        Comment


                        • #13
                          Guy at work bought the latest miracle coating. Keeps glasses in case in shirt pocket. Uses only occasionally, noticed after about 3 months the ear pieces had worn through the coating on both lenses. Miracle coating right!
                          mark costello-Low speed steel

                          Comment


                          • #14
                            'wonder coating' and 'miracle coating'- you guys on drugs or what- this is the age of cheap, fraud, and scam. I wonder if there is any coating- or most likely there probably is if there is supposed to be, but it's nothing like what it should be. Or the plastic lens material is not formulated and manufactured properly. Maybe it's too brittle, or the chemistry has been cheapened.

                            I would say it's pretty hard to cheapen glass, but that would be wrong. I'm sure there would be a way, and that aspect will be taken advantage of by the manufacturer.

                            Of course, there COULD actually be another reason why those glasses have gone like that.
                            I seldom do anything within the scope of logical reason and calculated cost/benefit, etc- I'm following my passion-

                            Comment


                            • #15
                              Originally posted by darryl
                              'wonder coating' and 'miracle coating'- you guys on drugs or what- this is the age of cheap, fraud, and scam.
                              True, but you can buy most of the top-line safety glasses in normal and hard-coat. My current favorite is the Crews Z-series wrap-arounds, and the hardcoat really does seem considerably more scratch resistant.
                              "Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did."

                              Comment

                              Working...
                              X