Search:

Type: Posts; User: majucalicut; Keyword(s):

Page 1 of 2 1 2

Search: Search took 0.11 seconds.

  1. Replies
    1
    Views
    3,026

    PAL focal points

    Do a progressive lens have focal points?
    If yes, how many?
  2. Replies
    9
    Views
    7,683

    Optical Centre

    How can we mark the optical center of a finished lens manually(with out the help of lensometre). I think with the help of a light reflection we can mark. Any other method ?
  3. Replies
    25
    Views
    20,289

    1.6 material or Poly ??

    Dear Friends,

    I would like to know which is better in terms of impact resistance. For rimless frame, what should I suggest, poly or 1.6 material. I heard that 1.6 materials are impact resistant...
  4. Replies
    2
    Views
    2,198

    Please answer

    Dear Friends,

    Please help me to clarify below doubts:

    1. Why plastic lenses(CR 39) turn yellow in color (when exposed to sunlight or kept in stock for a long period). Will it affect vision?
    ...
  5. Replies
    0
    Views
    1,568

    Please Help

    Dear Friends,

    Please help me to clarify below doubts:

    1. Why plastic lenses(CR 39) turn yellow in color (when exposed to sunlight or kept in stock for a long period). Will it affect vision?
    ...
  6. Under construction

    The Website is under Construction and will be back soon
  7. Ya, of course we tried the lens many time and got...

    Ya, of course we tried the lens many time and got such a good experience. It's back surface freeform lens customised for each prescription. It is having a fast adaptation. You will get the details in...
  8. Replies
    11
    Views
    10,618

    I would like to how mirror coated lens help...

    I would like to how mirror coated lens help cricket players while fielding?


    Regards,
    Maju
  9. Replies
    11
    Views
    10,618

    Mirror Coating

    Dear friends

    I would like to know the below things and the answers will be highly appreciated.

    1. What is the benefit of mirror coating and what are the materials used while coating and how the...
  10. Replies
    25
    Views
    15,153

    Night Driving

    Dear All,

    Which lens you can suggest for a person complaining on glare due to headlights in the night driving. What about umbrematic(yellow) lens and ARC? Any other option is there? Please Help
    ...
  11. Replies
    21
    Views
    10,256

    Transposition

    Dear All,

    I would like to know why there is a need of transposing the power and what are it's advantages. Please help
  12. Replies
    28
    Views
    9,433

    White Polarised

    I Know that all polarised are tinted. I would like to know wheather any polarised is availble without tint or clear? Please help:hammer:
  13. Replies
    1
    Views
    3,157

    Short or Regular?

    Please help me to answer below queries

    1) A customer who is using a D bifocal for a long time wants a progressive lens. Which one you suggest, a regular corridor or a short corridor?

    2) A...
  14. Replies
    13
    Views
    6,780

    Anti Glare Coating ???

    Is there any coating available as " Anti Glare Coating". Not Anti reflection coating.
    And is there any benefit by using a plano ARC lens for computer users?:o
  15. Thread: Base Curve

    by majucalicut
    Replies
    6
    Views
    4,662

    Base Curve

    I have a sunglass and a lens clock with me. I want to measure the base curve of the sunglass with the lens clock in order order a rx lens from the lab in that base curve. Now my question is where...
  16. Replies
    22
    Views
    13,286

    Majeed

    In India free form single vision and FF polarised are available. Free Form single vision can be defined as double sided aspheric lens. It will be thinner and flatter than normal aspheric lens. The...
  17. Replies
    10
    Views
    9,338

    If the power at fitting cross is equal to that of...

    If the power at fitting cross is equal to that of distance reference circle, why we need 8 or 10 mm. One of our customer fitted the lens just giving 3 mm above the fitting cross and the end customer...
  18. Replies
    1
    Views
    4,783

    Progressive Design

    Dear All,

    I would like to know what is Hard design, soft design and Multi design in progressive lens. What are the benefits and differences?

    Regards,
    Maju
  19. Replies
    10
    Views
    9,338

    Above the fitting cross

    1. Can any one say what length should I keep above the fitting cross when fitting a progressive lens?

    2. What will be the power at the fitting cross? Is it same as distance power?
  20. Replies
    2
    Views
    2,639

    Please Help

    Dear All,

    Please help me to clarify the below doubts:-

    1. Can you suggest a PAL for a squint patient?
    2. How to take PD of a squint patient?
    3. Which PAL you suggest for a better adaptation....
  21. Thread: Base curve

    by majucalicut
    Replies
    10
    Views
    6,459

    Base curve

    Is there any SI unit for the base curve and refractive index???????
  22. Thread: Hi-Index

    by majucalicut
    Replies
    6
    Views
    4,195

    Hi-Index

    Dear All,

    Is there is any instrument to find out the index of the lens fitted on a frame. When the customer came with a hi-index fitted on their frame.it is becoming a great confusion
  23. Replies
    15
    Views
    9,194

    Sport Lenses

    If you want to do a PAL in 8 base with an optics of 5 or 3 base you can go for NOVA sport lenses. In India it's brand name is Nova Sport. It's a freeform progressive of SEIKO design available in 6 to...
  24. Replies
    33
    Views
    27,594

    Ild

    I think sumit082 meant ILD itself. Here ILD stands for Individual Lens Design. A freeform progressive from Rodenstock for developing countries which have a refracive index of 1.60. Rodenstock ILD is...
  25. Replies
    2
    Views
    3,003

    Full Forn of CR39

    Dear freinds,

    I would like to know the full form of CR39. I think it is Columbia Resin batch no-39. I also want to know invented CR39.


    Regards,
    MAJU
Results 1 to 25 of 30
Page 1 of 2 1 2