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  Helpline (9am-5pm Mon - Friday) :  01925 357003 
     

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HELP WITH PRESCRIPTION RANGE

 

The following information will assist you in deciding if your prescription is within manufacturing frange for the frame you are considering...

 

(SPH + CYL) not more than ...


 

Remember the rules of adding two numbers of similar sign and of different sign 

If your (SPH + CYL) exceeds the stated value then it is not available

 

For example....

 

The right (SPH+ CYL) is +0.25 

 

The left (SPH + CYL) is -5.25

 

 

 

Ordering single vision near


.

For wearers over 45 years old where an ADD may be involved the calculation needs to be slightly different..

 

Careful with this one because the value of the (SPH + CYL) is different because the ADD changes the SPH for near.

For single vision near the NEAR SPH is (-1.25) + (2.25) = +1.00 

Then the NEAR SPH + CYL becomes (+1.00) + (1.50) = +2.50

   

If in doubt...

(

01925 357003

Telephone support available 5 days per week

(9am to 5pm) 

 

Alternatively fax your prescription through 

after you have placed your order 

to 01925 357113 

or 

email a copy of it to us at email@safetyspecs.co.uk

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