## Sunday, July 31, 2011

### How to transpose an eyeglass prescription easily !

Learn how to transpose an eyeglass prescription easily by learning a few simple rules!

Transposing a prescription is one of the most common actions when working in an optical laboratory, doctor’s office or even on a retail floor when an optician.  Some eye doctors prescribe eyeglasses in what is called plus cylinder, and others do so in minus cylinder.  Regardless of which is used, the prescriptions are the same.  This can be proven by transposing the eyewear prescription.

Transpose a prescription written in plus cylinder form to minus cylinder form as follows:

1. Add the sphere and cylinder powers to determine the new sphere power.
2. Change the sign of the cylinder.
3. Change the axis by 90 degrees.

Example 1:
 Transpose -3.00 +2.00 x 30 Step 1 Add the sphere and cylinder powers to determine the new sphere power. (-3.00) + (+2.00) = -1.00 Step 2 Change the sign of the cylinder -2.00 Step 3 Change the axis by 90 degrees. (if the axis is 90 or less than 90, add 90 degrees to the axis, if the axis is greater than 90 deduct 90 from the axis) 120 The transposed prescription is: -1.00 -2.00 x 120

Example 2:

 Transpose -3.00 -2.00 x 30 Step 1 Add the sphere and cylinder powers to determine the new sphere power. (-3.00) + (-2.00) = -5.00 Step 2 Change the sign of the cylinder +2.00 Step 3 Change the axis by 90 degrees. (if the axis is 90 or less than 90, add 90 degrees to the axis, if the axis is greater than 90 deduct 90 from the axis) 120 The transposed prescription is: -5.00 +2.00 x 120

Example 3:

 Transpose +3.00 -2.00 x 30 Step 1 Add the sphere and cylinder powers to determine the new sphere power. (+3.00) + (-2.00) = +1.00 Step 2 Change the sign of the cylinder +2.00 Step 3 Change the axis by 90 degrees. (if the axis is 90 or less than 90, add 90 degrees to the axis, if the axis is greater than 90 deduct 90 from the axis) 120 The transposed prescription is: +1.00 +2.00 x 120

Example 4:

 Transpose +3.00 +2.00 x 30 Step 1 Add the sphere and cylinder powers to determine the new sphere power. (+3.00) + (+2.00) = +5.00 Step 2 Change the sign of the cylinder -2.00 Step 3 Change the axis by 90 degrees. (if the axis is 90 or less than 90, add 90 degrees to the axis, if the axis is greater than 90 deduct 90 from the axis) 120 The transposed prescription is: +5.00 -2.00 x 120

credit: opticianworld, ehow, laramyk

1. +1.00/-2.50 cyl 180

1. -1.5/+2.5*90

2. i think cylinder is greater no change required in this number

3. -4 sph+4cylaxis90

4. -4 sph+4cylaxis90

2. -4.00 X 180 how we do transposition for it ?

3. -4.00 X 180 how we do transposition for it ?

1. -4.00 × 180 is equal to 0.00 -4.00 × 180
as per the above formula, transposed SPH will be (0.00 + -4.00)= -4.00
transposed CYL will be +4.00
and transposed axis will be (180-90)= 90
it means the transposition for -4.00×180 will be -4.00 +4.00 ×90.

2. Ans: +4.00×90°

4. Whatbabout when You want to transpose a negative cylinder to plus, can You show a step by step. I like Your explanation.

5. Whatbabout when You want to transpose a negative cylinder to plus, can You show a step by step. I like Your explanation.

6. I like the way you are explaining except that for example in this one I can not understand it the spherical equivalent of (-2.00+3.00 x090 why is the answer -0.50

1. Thank you for the comment. But I couldn't find the power which you have said in your query?
If you want to transpose -2.00+3.00x90;
Transposition will be: +1.00 -3.00x180

2. This comment has been removed by the author.

3. If you want to transpose-2.00+3.00×90; Transposition will be +1.00-3.00×90;on axis 90 to change opsosite to 180 ; an 180 axis change to 90 just simple Technique

7. -3.00 +2.00 x 130

1. Transposed Rx is -1.00 -2.00 x 40

8. I've heard the term acylinder lenses before. What does that refer to? Is it a new term, or is it just an incorrect one? I was under the impression that all lenses are roughly cylindrical and that they don't work otherwise.
http://www.mathewsoptical.com/products.html

10. hw to transpose wen cycloplegic has been added and distance is 2/3 m....??

11. We pneumatic products manufacture several products, including solenoid valves,air control valves, piston air cylinder, Pneumatic Air Filter and some pneumatic accessories. Most of goods are exported to USA, Europe and Asia. And they are widely used on electronic, pharmaceutical, food processing, packaging, medical and automotive industries. Visit: www.xinyipneumatic.com

12. The particular eye continues to be called essentially the most intricate body organ within our body. It really is remarkable that one thing so little might have so many doing work elements.Although the fact that precisely how tough the work of delivering eyesight really is,perhaps it really is absolutely no ponder in the end.

eye specialist in jaipur

13. I have Right eye power : +2.25, CYL: +1.25, Axis: 180
And Left eye power : +1.25, CYL: +0.75, Axis: 165

It shows calculate prescription as follows:
Right(OD) 4 -1.75 90
Left(OS) 2 -0.75 75
But how i can order lenses online their is no CLY option for plus power in any websites?

1. Could you please provide any lens ordering website link? so that I can tell you how.

2. But the transposition for the given prescription is;
R +3.50 -1.25 x 90 (you have mentioned as +4.00 -1.75)
L +2.00 -0.75 x 75

3. would you please explain how you did that? thank you.

14. Prescription Sunglasses-James Bensen women's prescription glasses. Beautifully designed fashion eyeglasses with single vision prescription lenses only R995. Get started with our free Home Try-On program!"

15. Is it safe to buy prescription eyeglasses online?

online prescription eyeglasses

16. How can I get prescription sunglasses?
cheap prescription eyeglasses

17. good 1 if you want to know more read here http://www.knowyoureye.com/transposition-in-optometry/

18. Awasome Post
My blog about lens and eyeglasses :
Kacamata Minus

19. -4.00/+2.00 axis 140

20. -4.00/+2.00 axis 140

1. The transposition will be
-2.00/-2.00 axis 50

2. Plano/+2.00*140

3. +4.00/+2.00×140

4. Plz reply nd solve my confusion

-4.50@90, +2.25@180

22. Transpose an eyeglass prescription is very important for prescription glasses retailer. Some of the retailer don't know the exact prescription transpose. If we use the best performance glasses, it wouldn't a big deal for us.

I am using some eyeglasses over 2+ years and I am not getting any problem there. I got it from online eyeglasses.

>......................>
prescription safety glasses online

23. Great Article..The design and looking of above sunglasses are really superb.

24. What about transpert -4.50 shere to mius cylinder

25. What about transpert -4.50 shere to mius cylinder

26. Nice Post is this!SmartBuyGlasses Coupon

27. easy way to transpose tnx du

28. This comment has been removed by the author.

29. Please transposition this PRESCRIPTION:( +0.75 -0.75 @85 ) & ( +0.25 -0.25 @90 )

30. Please transposition this PRESCRIPTION:( +0.75 -0.75 @85 ) & ( +0.25 -0.25 @90 )

31. This comment has been removed by the author.

32. At Concourse Optometry we stock the most recent styles from many name brands. Whatever your needs, we will locate the most attractive, best fitting pair of eyeglasses for you! Here is a rundown of the brands we convey: Irvine Optometrist

33. Superb post and even great help and advice! This blog post is very effective and used by us. Thanks for expression valuable tips.

34. The Concourse Optometry Team - Julie Chen has extensive clinical experience in comprehensive vision examinations, contact lens fittings, and managment of refractive/cataract surgery. Dr. Chen is also a Clinical Director at NVision Laser Centers in Newport Beach. In her position there, she is involved in the refractive surgery consultation process and pre/post-operative care for refractive surgery patients.

35. Great and useful article. Creating content regularly is very tough. Your points are motivated me to move on.

optical online store

cateye eyeglasses online

36. Nice blog good to see if you want more information visit http://triocorporation.in/ophthalmology-software.aspx.

37. Thanks for the valuable information and insights you have so provided here... Antipodes

38. For transposition any apps

39. Thanks for the information. Get  free health question consultation in Australia  from online doctors.
24 hour doctor

41. https://www.eyehealthnepal.com/2017/10/lens-transposition.html here you find more easier way

42. https://www.eyehealthnepal.com/2017/10/lens-transposition.html

43. Sometime it becomes very hard to find a well written and well established bog which give you correct and useful information. However, I found this blog and got some relevant information which are really helpful for me.
ร้านแว่น

44. Hi Dear,

I like Your Blog Very Much..I see Daily Your Blog ,is A Very Useful For me.

Buy IMOOL disposable daily、monthly、yearly contact lenses online ,which is on the meitongs.hk website,we have the largest global supplier of IMOOL colored contacts lenses and sell to USA,UK,Australia,Southeast Asian countries.you will receive them in 5 working day with high quality and cheap colored contacts

Visit Here - https://www.meitongs.hk/collections/imool/

45. Transpose+1/_3×180

46. Buy latest trends in oceanic sunglasses and reading glasses from ShadyVEU. You will like this collection of unique sunglasses and stylish readers.

47. Hiv disease for the last 3 years and had pain hard to eat and cough are nightmares,especially the first year At this stage, the immune system is severely weakened, and the risk of contracting opportunistic infections is much greater. However, not everyone with HIV will go on to develop AIDS. The earlier you receive treatment, the better your outcome will be.I started taking ARV to avoid early death but I had faith in God that i would be healed someday.As a Hiv patent we are advise to be taking antiretroviral treatments to reduce our chance of transmitting the virus to others , few weeks ago i came on search on the internet if i could get any information on Hiv treatment with herbal medicine, on my search i saw a testimony of someone who has been healed from Hiv her name was Achima Abelard and other Herpes Virus patent Tasha Moore also giving testimony about this same man,Called Dr Itua Herbal Center.I was moved by the testimony and i contacted him by his Email.drituaherbalcenter@gmail.com . We chatted and he send me a bottle of herbal medicine I drank it as he instructed me to.After drinking it he ask me to go for a test that how i ended my suffering life of Hiv patent,I'm cured and free of Arv Pills.I'm forever grateful to him Drituaherbalcenter.Here his contact Number +2348149277967...He assure me he can cure the following disease..Hiv,Cancer,Herpes Virus,Hpv,Pile,Weak Erection,Lyme Disease,Epilepsy,Glaucoma.,Brain Tumor,psoriasis, Cataracts,Macular degeneration,Cardiovascular disease,Chronic Diarrhea,Lung disease.Enlarged prostate,Osteoporosis.Alzheimer's disease,
Dementia. ,Bladder Cancer,Autism,Colorectal Cancer,Breast Cancer,Kidney Cancer,Leukemia,Lung Cancer,Tay tach disease,Non Hodgkin Lymphoma,Skin Cancer,Lupus,Uterine Cancer,Prostate Cancer, Seizures, fibromyalgia ,ALS,Hepatitis,Copd,Parkinson disease.Genetic disease,Fibrodysplasia disease,Fibrodysplasia Ossificans Progressiva,Fluoroquinolone Toxicity Syndrome,Stroke,Hpv,Weak Erection,Liver/Kidney Inflammatory,Men/Woman infertility, bowel disease ,Huntington's disease ,Diabetes,Fibroid.

48. Reqular eye examinations are crucial for maintaining the health of your visoin. they are a routine part

of an eye doctor visit and require no preparation on your part Healthy adults should have a

refraction test every two years,
while children need them every one or two years

beginning at age 3.

49. What about -0.25/-0.25*180 being transposed?