John, I am so happy to find you! I watch you for hours at a time! I have been in the business for years in a few small offices, with out coworkers to bounce info around. I am now with a large company cross training in the lab. You have helped tie all that I have learned hands on , study in trade mags, and now with coworkers. Thankyou !
Love your videos. I am an Eye Care Specialist student and when I don't understand something we went over in class, I watch your videos and it all makes sense.
wow thank you so much!!! this, i just started my optician course last week online and was feeling very discouraged and lost until i decided to look up the boxing system on youtube. im so glad i found this channel your way of explaining is soooo helpful. your channel will be my go to for the next 2 years! thank you so much
I am attending Penn foster optician course and also using you videos as well to try to get a better under standing. so far so good with the video.. now I only problem is retaining information..
it's hard to find a good teaching video for this. which I'm really grateful to found your channel. please keep inspring people. please keep give us students a good information so we can improve for future. thanks
You can't. But I'm guessing you mean how do people just "know" the ED from the frame measurements shown or stamped on the frame. A rule of thumb can be A + 2 but that only works (some of the time) for simple shapes and smaller to mid-sized frames. So for a 52/19 you might guess of an ED of 54. Won't matter much until you are trying get the thinnest possible lens in plus powers.
Comments about boxing system: you cannot always read the A and B directly from the frame! For example, for a slanted oval, the A and B must be read from the boundaries of the box. Because the oval is slanted, there is no place to measure. You must construct the box, and then measure the box. That is the whole principle of the "boxing system" You also comment where the "edge" of the lens is. For a lens fitted in a grooved frame (usually most plastic and full-rim metal frames), the box is tangent to the flat part of the lens edge, not counting the protruding part. For grooved lenses (in half-frames using nylon cord), the boundary of the lens is the flat edge, not the groove. Please comment on the details of this! Do frame tracers trace the groove or the flat surface outside the groove? Another measurement is lens circumference. Is that measured over the protruding groove, or over the flat part of the lens edge?
Brian, If you have a different way of doing anything I show then by all means use it. As long as you get good consistent results - that is all we are ever after. John
In the US segment "drop" is the distance from half the frame "B" and the top of the segment. It is another way set height can be written. X # mm below half the B or X # mm above the lowest point in frame eyewire opening. John
Hi John, I have a question. (Disclaimer: I'm not an optician, just someone trying to get a decent pair of glasses for my Dad.) I was doing some searching and reading about UV400, and an article on the Laramy-K website named "The Problem with UV400 Treatments" came up on Google. That article was written in 2010, which was a long time ago. Do you know if it's still the case that the UV400 treatments used on most lenses lose their effectiveness fairly quickly, or if things have changed for the better since then? I know you didn't write that particular article, but I wondered if you or anyone at your lab could shed some light on this topic. Many thanks if you can answer.
Yeah No, All are welcome here. UV400 dip coatings are primarily used on CR-39 or the original plastic used for lenses. Most glasses today use other materials that have good UV protection built into the lens. A good AR or non-glare coating can also add additional UV protection. It comes down to material and how much UV exposure he might be getting in daily life. When outdoors one should be wearing a good pair of sunglasses! Otherwise IMO any good lens and AR coating should provide all he needs for ordinary daily living. John
Hello Mr. Seegers. I'm having some trouble when getting A, B, and C measurements. My issue has to do with the placement of the PD ruler on the lens' front surface, due to its curvature. When I rest the PD ruler on the lens' surface, is it supposed to rest flat on the middle of the lens or do I press the 0mm mark against the edge of the lens and follow it until the other edge, all the while flattening the ruler as I go?
Assuming a plastic PD stick with some give I would lay the wider flat side against the lens for stability and use my thumbs nasally and temporally. Don't make yourself crazy about it... The only time 0.5mm will matter is if you are trying to get the absolutely thinnest possible plus lens in surfaced.
They don't teach us these things anymore.
Thanks so much for this.
John, I am so happy to find you! I watch you for hours at a time! I have been in the business for years in a few small offices, with out coworkers to bounce info around. I am now with a large company cross training in the lab. You have helped tie all that I have learned hands on , study in trade mags, and now with coworkers. Thankyou !
You are welcome! Don't miss out on the website www.OpticianWorks.com. The videos are just a small part of the big picture. John
Love your videos. I am an Eye Care Specialist student and when I don't understand something we went over in class, I watch your videos and it all makes sense.
Great to hear, Gabriella. Thanks for watching!
wow thank you so much!!! this, i just started my optician course last week online and was feeling very discouraged and lost until i decided to look up the boxing system on youtube. im so glad i found this channel your way of explaining is soooo helpful. your channel will be my go to for the next 2 years! thank you so much
What program did you start? And don''t miss the website! www.opticianworks.com
@@LaramyKOptical im in the optical science-eyeglasses program in NAIT and no i haven't checked out the site but will right now!
Thank you so much, I wish I could watch this when I was a student, your way of explanation is very fun and easy.
Thanks for all your comments and support, yasa!
I am attending Penn foster optician course and also using you videos as well to try to get a better under standing. so far so good with the video.. now I only problem is retaining information..
You do not need Penn Foster course. These video and some good text books is all that is sufficient.
which book
your chanel is amazing. im a qualified Dispensing Optician an i must say i watched almost all your vids. im from cape town!
Thanks Nicki!
it's hard to find a good teaching video for this. which I'm really grateful to found your channel. please keep inspring people. please keep give us students a good information so we can improve for future. thanks
You are welcome!
Muchas Gracias !
thank you so much for the knowledge, this study lesson is so rare on youtube
Nice job John. Thanks for the good work that you do.
Thanks for watching, skieye!
Thank you so much
Great ℹ️
Thanks for amazing videos I am an optical lab technician always refresh my optical knowledge with your fantastic videos keep it up 👍
Thank u sir, this video is use full in every optometrist
thanks for this video.Can you teach me how to measure vertical and horizontal dimension of lens.
Thanks sir🙏👍
Thank you so much this vedio is very useful and increase my experience to take a frame mesurement
thank you so much!!!!! I'm studying for my ABO and you make it super easy to understand it!!! more over study books!! lol thank you so much!!
Thanks!
I’ve been crying this one that uses words to describe how to solve the problems but not any examples 😭
Thanks a lot
You are welcome!
Thank you very much for your help to understand the boxing system; but how I can get the ED without ruler?
You can't. But I'm guessing you mean how do people just "know" the ED from the frame measurements shown or stamped on the frame. A rule of thumb can be A + 2 but that only works (some of the time) for simple shapes and smaller to mid-sized frames. So for a 52/19 you might guess of an ED of 54. Won't matter much until you are trying get the thinnest possible lens in plus powers.
you`re the best!
I'm thinking about taking the ABO soon how can you guys help me to prepare for it
Go to the Laramy-K UA-cam page and watch the video, How To Pass The ABO!
Here you go: ua-cam.com/video/K-kWaPKEK88/v-deo.html
Laramy-K Optical Thank you so much
Thanks for watching!
Please formulas of boxing system
Comments about boxing system: you cannot always read the A and B directly from the frame! For example, for a slanted oval, the A and B must be read from the boundaries of the box. Because the oval is slanted, there is no place to measure. You must construct the box, and then measure the box. That is the whole principle of the "boxing system"
You also comment where the "edge" of the lens is. For a lens fitted in a grooved frame (usually most plastic and full-rim metal frames), the box is tangent to the flat part of the lens edge, not counting the protruding part. For grooved lenses (in half-frames using nylon cord), the boundary of the lens is the flat edge, not the groove.
Please comment on the details of this! Do frame tracers trace the groove or the flat surface outside the groove? Another measurement is lens circumference. Is that measured over the protruding groove, or over the flat part of the lens edge?
Brian,
If you have a different way of doing anything I show then by all means use it. As long as you get good consistent results - that is all we are ever after.
John
Thanks! You're awsome!
Thanks for watching, Adam. :) You're awesome too!
Why, thank you!
Awesome video
Grande thank you
You are welcome.
Sir your explanation is very easy.
I want know sir , how we give segment drop in bifocal
In the US segment "drop" is the distance from half the frame "B" and the top of the segment. It is another way set height can be written. X # mm below half the B or X # mm above the lowest point in frame eyewire opening. John
Sir please suggest me your video for blending of progressive lens and design of progressive lens
www.OpticianWorks.com
Hi John,
I have a question. (Disclaimer: I'm not an optician, just someone trying to get a decent pair of glasses for my Dad.)
I was doing some searching and reading about UV400, and an article on the Laramy-K website named "The Problem with UV400 Treatments" came up on Google. That article was written in 2010, which was a long time ago. Do you know if it's still the case that the UV400 treatments used on most lenses lose their effectiveness fairly quickly, or if things have changed for the better since then?
I know you didn't write that particular article, but I wondered if you or anyone at your lab could shed some light on this topic. Many thanks if you can answer.
Yeah No,
All are welcome here.
UV400 dip coatings are primarily used on CR-39 or the original plastic used for lenses.
Most glasses today use other materials that have good UV protection built into the lens.
A good AR or non-glare coating can also add additional UV protection.
It comes down to material and how much UV exposure he might be getting in daily life.
When outdoors one should be wearing a good pair of sunglasses!
Otherwise IMO any good lens and AR coating should provide all he needs for ordinary daily living.
John
What I learned: a PD stick is a metric ruler showing mms.
Can u tell me what is abo and give further details
Hello Mr. Seegers.
I'm having some trouble when getting A, B, and C measurements. My issue has to do with the placement of the PD ruler on the lens' front surface, due to its curvature. When I rest the PD ruler on the lens' surface, is it supposed to rest flat on the middle of the lens or do I press the 0mm mark against the edge of the lens and follow it until the other edge, all the while flattening the ruler as I go?
Assuming a plastic PD stick with some give I would lay the wider flat side against the lens for stability and use my thumbs nasally and temporally. Don't make yourself crazy about it... The only time 0.5mm will matter is if you are trying to get the absolutely thinnest possible plus lens in surfaced.
whats the effective diameter ed of 54 mm round lenses
Unless it's a trick question and I missed it - it would be 54.
What should I have to do for this abo exam
www.OpticianWorks.com --- You will find everything you need to answer all your questions there! John
Hi sir , am in pondicherry , can i also try this exam
Am an optometrist , can i try abo
Yes, anyone can take the examination. You pay the fee and give it a try.
Wat a funny at starting, 😊
Measuring for people who have never measured anything before.