You just solved a freaking puzzle for me as an optician! I’ve been an Optician now for about two years. I’m 23 and finally moving to a big boy job where I will have to really know my lensmeter. I haven’t had the privilege to learn on a manual as we are always so short staffed. But not at this place! I’m so excited! Thank you for solving a hard puzzle piece for my confused brain.
Me runs to the lensmeter to test this! Haha. I love your videos. I'm new Optician for a big company and I was just throw into this with NO training and your videos help so much. You make my job easier. 😁
Very good! I used to be a Option, I even whent to school. It’s a very long story but I forgot how to use the lenzometer until I saw this vid. So thanks.
Absolutely stunning Sir!!!You made it too easy to learn,,,it's my first time watching your channel.i was in search of a good tutorial for myself and here it is, Thanks 🤍
This is awesome, I wanted a refresher for my contact lens NACOR this sunday a good reminder for when I need to read RGP/soft lenses. My current work uses an auto lensmeter and I wanted to refine my memory. I use to love the manual Lensmeter the auto ones make it easy to loose this skill!
I am new to use lensometer. I understand the concept of adjusting the axis wheel to make the sphere lines straight. However, I mostly get it wrong even though when I take a look, those sphere lines are still straight to me. Do you know how can I solve my problems? Thank you!
What equipment are u using to get the lens meter view into the video? I know they make microscope cameras but I haven't found anything similar for a lens meter yet. Work at a small to medium and growing lab. Would really Love to be able to put a manual lens meter live feed on our 65-in conference room TV to train people
After trying MANY different things I ended up using a cellphone telescope mount. It is fussy, difficult, unreliable and near impossible to maintain a consistent focus. You aren't the first to ask - I wish I had a better answer for you. If you try pull off the soft rubber eyecup.
I understand every concept of the lensometer my issue is I get crisp spheres line at a certain axis, and veteran optician Bob says you're off 1/2 diopter and or off on the axis. Very rare is the case where I'm on the money. According to him. I know you said in one of your video that that lensometer is subjective but how can I be so wrong all the time? I adjust the lens ometer to my eyesight and I'm still off.
D Sep, First thing that comes to mind is, "Do either of you wear glasses?" If, yes, I'd start there and try working with the lensmeter without wearing them. Next, I'd work with the lab and get them to mark up some lenses for you and see who is right and who is wrong. A few around +/-4 with about 2 cyl. have THEM mark an axis while in a good high end auto-lensmeter. Or, maybe you have a lensmeter gauge? I'd say the subjective amount should be closer to 0.125 and 1 or 2 degrees, not 0.5. If you can please let me know how this gets solved, it would make a great teaching tool. In fact depending on where you are we might even send you some lenses.
This is happening to me when I'm reading my lenses. I read it as I see it on the lensometer and Bob the Optician is testing me and gives me minus points for off axis, even if it is within ANSI. "He" said "practice with your lensometer", or maybe your blocking is off.
I came across an older TOKYO KOGAKU lensmeter/verometer. This does not have lines but rather series of dots in a circle. I've got the sphere part right. How do i read the cylinder?
Hello Sir, how do you find the optical center of a plano lens? . Is it always at the center of the lens in a plano?.. what if the plano lens doesnt center in the lensmeter? What could be the problem..thank you in advance
Just curious... I'm a LDO and thinking of setting up a small edging shop for patients, and ordering uncut lenses. Have you tried the Topcon LM-8E (which I'm accustomed to), and how does it compare with the Marco? Are they very similar? I actually do like the looks of the various features on the Marco, but that bright green background on your Marco seems to bother me...?? Is the other switch setting milder? I'd prefer something closer to a neutral/black&white.. Thanks much!
I have no experience at all with the Topcon. For basic SV finishing layout work just about anything will do. If you are familiar with the Topcon and like the Topcon I'd go ahead and get one. And - I think you will save some $$$.
Is it correct to deduce that the second example +1.00 -2.50 at X degrees is actually the same as -1.5 +2.50 at X+90 degrees? And is there a customary convention to always write these using the smaller number as the spherical, or perhaps to use whichever order results in a negative cylinder, or something like that?
Please go back and watch the entire lensmeter series again. Sounds like you need to be at a lensmeter and maybe have a mentor with you. I'm sorry but not much I can say beyond what is in the video series and on the OpticianWorks website. John
Hell guys IM staring to practice with the manual lensometer I feel a little bit confused to determine +/- cyl If I understood correctly the axis to choose is the meridian where the cylinder has no power so for instance : A = +3.00DSx120 B=+1.00xDS X 30 +3.00DS, -2.00 cyl X 30 axis hence im working in minus cyl On the other hand A = +1.00DSx120 B=+3.00xDS X 30 +1.00DS, +2.00cyl X 120 axis Working in plus cyl. Then if I want to work again in minus cyl I have to transpond
Sorry but, no. Lenses in series and lenses in contact are part of geometric optics and require different formulas than the single lenses in eyeglasses. You would want to look for physics and optical engineering books or sites. John
I bought a Lensmeter and the two sets of mires are equal in distance apart. There are no thick and thin lines, the two sets of lines are the same size and they are always in the shape of a cross. What am I doing wrong?
Maybe, just maybe, SWAG here that they might appear different if you have a lens with cylinder? Drop in a -5.00 with 2.00 cylinder and see what happens? Oh, wait, no, maybe you just need to put a lens in it? You might be looking at the reticle not the sphere and cylinder lines? The reticle is constant and fixed and all the lines are the same.
No, that wouldn't work. You are aligning the lens to the position not the other way around. 135 is 135 is 135 you set the axis to 135 and rotate the lens to match it so that the power you need is at 135.
You just solved a freaking puzzle for me as an optician! I’ve been an Optician now for about two years. I’m 23 and finally moving to a big boy job where I will have to really know my lensmeter. I haven’t had the privilege to learn on a manual as we are always so short staffed. But not at this place! I’m so excited! Thank you for solving a hard puzzle piece for my confused brain.
Hi
Me runs to the lensmeter to test this! Haha. I love your videos. I'm new Optician for a big company and I was just throw into this with NO training and your videos help so much. You make my job easier. 😁
Same here
If you dont mind me asking, does the big company pay you well?
I was struggling to figure out the manual lensmeter but watching this just made it all click! Thank you for this 🙂
Hello Laramy, I know how to use a lensmeter, BUT, always it's something to learn...thank you...
This video has a very clear understanding, I was able to follow easily then all the other videos I watched..😀
Very good! I used to be a Option, I even whent to school. It’s a very long story but I forgot how to use the lenzometer until I saw this vid. So thanks.
Just like riding a bike. And if you fall off the lensmeter it doesn't hurt.
This is a perfect lesson ❤,I will practice it tomorrow,the teaching made it soo easy ❤❤❤
Absolutely stunning Sir!!!You made it too easy to learn,,,it's my first time watching your channel.i was in search of a good tutorial for myself and here it is, Thanks 🤍
This is awesome, I wanted a refresher for my contact lens NACOR this sunday a good reminder for when I need to read RGP/soft lenses. My current work uses an auto lensmeter and I wanted to refine my memory. I use to love the manual Lensmeter the auto ones make it easy to loose this skill!
Yes, it does. Thanks for watching Jisoo!
thank you so much for your hard work and dedication
My dad was an old school optometrist and always made me print out Rx's in .12ths
Hi good explanation of a very important optical instrument!
See the video Flat Transposition.
Thanks for your videos,it really helps
You explained perfectly.
I am new to use lensometer. I understand the concept of adjusting the axis wheel to make the sphere lines straight. However, I mostly get it wrong even though when I take a look, those sphere lines are still straight to me. Do you know how can I solve my problems? Thank you!
That is clear, concise, thank you!!
You are an exceptional teacher thank you !!!
Thank you, nicely explained.
Appreciate you!
very clear explanation. Thanks!
Thanks for watching, Dr. Ben!
تبو
Very very thanks 👍👍👍 sir ।
What equipment are u using to get the lens meter view into the video? I know they make microscope cameras but I haven't found anything similar for a lens meter yet. Work at a small to medium and growing lab. Would really Love to be able to put a manual lens meter live feed on our 65-in conference room TV to train people
After trying MANY different things I ended up using a cellphone telescope mount. It is fussy, difficult, unreliable and near impossible to maintain a consistent focus. You aren't the first to ask - I wish I had a better answer for you. If you try pull off the soft rubber eyecup.
I understand every concept of the lensometer my issue is I get crisp spheres line at a certain axis, and veteran optician Bob says you're off 1/2 diopter and or off on the axis. Very rare is the case where I'm on the money. According to him. I know you said in one of your video that that lensometer is subjective but how can I be so wrong all the time? I adjust the lens ometer to my eyesight and I'm still off.
D Sep, First thing that comes to mind is, "Do either of you wear glasses?" If, yes, I'd start there and try working with the lensmeter without wearing them. Next, I'd work with the lab and get them to mark up some lenses for you and see who is right and who is wrong. A few around +/-4 with about 2 cyl. have THEM mark an axis while in a good high end auto-lensmeter. Or, maybe you have a lensmeter gauge? I'd say the subjective amount should be closer to 0.125 and 1 or 2 degrees, not 0.5. If you can please let me know how this gets solved, it would make a great teaching tool. In fact depending on where you are we might even send you some lenses.
This is happening to me when I'm reading my lenses. I read it as I see it on the lensometer and Bob the Optician is testing me and gives me minus points for off axis, even if it is within ANSI. "He" said "practice with your lensometer", or maybe your blocking is off.
Same with me, i got mad all time about that😢😢
awesome refresher lesson Thanks
O.D student here🙌🏼
I came across an older TOKYO KOGAKU lensmeter/verometer. This does not have lines but rather series of dots in a circle. I've got the sphere part right. How do i read the cylinder?
Sorry but no idea.
Hello Sir, how do you find the optical center of a plano lens?
. Is it always at the center of the lens in a plano?.. what if the plano lens doesnt center in the lensmeter?
What could be the problem..thank you in advance
A plano lens has no optical center. See OpticianWorks.com - you are missing several basic concepts that are the foundation for opticianry.
Just curious... I'm a LDO and thinking of setting up a small edging shop for patients, and ordering uncut lenses. Have you tried the Topcon LM-8E (which I'm accustomed to), and how does it compare with the Marco? Are they very similar? I actually do like the looks of the various features on the Marco, but that bright green background on your Marco seems to bother me...?? Is the other switch setting milder? I'd prefer something closer to a neutral/black&white.. Thanks much!
I have no experience at all with the Topcon. For basic SV finishing layout work just about anything will do. If you are familiar with the Topcon and like the Topcon I'd go ahead and get one. And - I think you will save some $$$.
Is it correct to deduce that the second example +1.00 -2.50 at X degrees is actually the same as -1.5 +2.50 at X+90 degrees? And is there a customary convention to always write these using the smaller number as the spherical, or perhaps to use whichever order results in a negative cylinder, or something like that?
Keep watching the series. See also: th-cam.com/video/rVMW5a6qJ6I/w-d-xo.html
@@LaramyKOptical Ah yes, of course you would have covered this in a subsequent video. Thanks for the reply.
How do I know when I'm on the right axis? When both sets of lines are clear?
Please go back and watch the entire lensmeter series again. Sounds like you need to be at a lensmeter and maybe have a mentor with you. I'm sorry but not much I can say beyond what is in the video series and on the OpticianWorks website. John
@stormrider777 Are both sets of lines clear at the same time? If so that is spherical lens and no axis needed.
Thank you 😊
This was awesome
Thanks, Bibi!
Good tricks Sir ,I am a student of optometry 2 year from India
Which clg
Mmu University haryana India
which axis to consider
U gotta use the forcimeter too please and that's gonna be super easy for a lot of people
????? If you meant focimeter that is the same as a lensmeter.
Thank you!
which axis to consider finally for cyl power
Ashwin, Everything I have and know on the lensmeter is in the video series. John
can’t find the kit at the website 😩
See the FAQ.
well done sir
Thanks!
Awesome!
Thanks Kimberly!
Hell guys IM staring to practice with the manual lensometer I feel a little bit confused to determine +/- cyl If I understood correctly the axis to choose is the meridian where the cylinder has no power so for instance :
A = +3.00DSx120
B=+1.00xDS X 30
+3.00DS, -2.00 cyl X 30 axis
hence im working in minus cyl
On the other hand A = +1.00DSx120 B=+3.00xDS X 30
+1.00DS, +2.00cyl X 120 axis
Working in plus cyl.
Then if I want to work again in minus cyl I have to transpond
It is time for a membership with OpticianWorks.com.
How do you determine the axis?
See the rest of the video series here: th-cam.com/channels/dfKXBLjBDbX2X2g0XuAbmw.htmlvideos
Thank you sir
Thank you, Gurpreet!
Does knowing manual better than auto?
thanks sir
Thank YOU, ahga carts!
how to use dot matrix manual lensometer
Ashwin, Everything I have and know on the lensmeter is in the video series. John
Sir I am from India. I am manufacturing microscope optical lens like 100x,40x,10x. Can you make a video about microscope lens.
Sorry but, no. Lenses in series and lenses in contact are part of geometric optics and require different formulas than the single lenses in eyeglasses. You would want to look for physics and optical engineering books or sites. John
I bought a Lensmeter and the two sets of mires are equal in distance apart. There are no thick and thin lines, the two sets of lines are the same size and they are always in the shape of a cross. What am I doing wrong?
Maybe, just maybe, SWAG here that they might appear different if you have a lens with cylinder? Drop in a -5.00 with 2.00 cylinder and see what happens? Oh, wait, no, maybe you just need to put a lens in it? You might be looking at the reticle not the sphere and cylinder lines? The reticle is constant and fixed and all the lines are the same.
what's the point of rotating the lens when you could just rotate the axis wheel?
No, that wouldn't work. You are aligning the lens to the position not the other way around. 135 is 135 is 135 you set the axis to 135 and rotate the lens to match it so that the power you need is at 135.
Could also stay still and wait for the earth to rotate 😆😆
Do you assume to have guessed the axis location every time ?
So many questions
@@angelikazavadska6117
How do you read a cylindrical lens?
Julian, Sphero-cylinder lens is just another way of saying, cylindrical lens. John
Is it "lens meter" or "lens o meter"?
lensmeter. Lens-o-meter was an old trade name and quite frankly sounds a little silly.
O - and it is actually a vertometer!
I'll start calling it a vertometer
opticianry got me fucd up😤