Presize

Essilor's remote edging service

Presize, Essilor's highly accurate and cost-effective remote edging system, allows you to order lenses precisely cut to shape and size so you simply have to fit the lenses into the frame. Presize uses a PHI or TESS tracer to accurately trace the frame and our Linx ordering system to send the prescription and glazing information directly to Essilor. The lenses will be delivered ready-edged for you to mount into your patient's frame.

Easy ordering

Once the patient has chosen their frame, you simply enter their prescription details into Linx and trace the frame. The information is then sent and, once the order is received, the majority of stock lenses and single process RX lenses are cut within a day and four to five working days for most RX lenses, reducing the time it takes for your patients to receive their spectacles.

Precise

All lenses are edged to specific standards and the possibility of expensive edging errors is removed. All Essilor materials can be processed so you can offer your customers a wide choice of materials.

Edging

General edging conditions

The Essilor Edging service is of the highest quality. This is the result of a significant investment and re-organisation program which has taken place over the last few years. Continued investment in the edging facility will ensure that the service stays at the forefront of technology. We process all types of frames including rimless (edge, drill and plug), nylon and wraparound.

To enable Essilor to process the order as quickly as possible please use the Essilor order form and ensure that the following information is provided:

• Your account code
• Patient reference
• Lens form, material and any coating
• PDs and heights
• Prescription

Frames

• All re-edges are carried out at your own risk
• Essilor will not be held responsible for any breakage to own frames.

Lens thickness

In order to guarantee stability we produce lenses to specific minimum thickness criteria:

• Nylon - 1.8mm edge thickness at thinnest point
• In Line Metal -2.2mm edge thickness at thinnest point
• Rimless - minimum edge thickness at drill hole is optimised to ensure lens safety, security of fit and overall product integrity

These are our recommendations on minimum lens thickness; however it can be amended depending on individual job requirements. Please contact your local laboratory for more information.

Fitting

Rimless Frames

New rimless frames sent to Essilor for fitting must be accompanied by all necessary fittings and fixings as supplied by the frame manufacturer.

Rimless fitting charges include edging, standard polishing, drilling and mounting.

Clip-on – if a rimless frame is to be used in conjunction with a clip-on we request it to be sent with the order to ensure accurate sizing and fit. No single eye cut and drills will be done.

Facettes – Please contact customer services for availability.

Edge Finishes

All glazed Airwear products will have machine polished edges. For Rimless and Nylon, only Airwear lenses will have polished edges.

In line Metal Nylon

To ensure the accuracy of shape, we request that you send the frame, or demo lens or lens former with your frame.

Essilor Edging

Essilor laboratories offer a complete fitting service, all Essilor Nikon lens ranges are available edged through the Essilor laboratories fitting facility. The following additional services are available:

Fitting stock

A next day service is available from receipt of order, through our standard courier service.

Precal

Optimal Thickness for All Lenses

Precal is a lens calculation process which predetermines the thickness of an edged lens, based on lens and frame shape, prescription and centration. Precal calculates the minimum centre thickness to which a lens can be surfaced to provide the thickness appropriate to the lens/mount combination.

Ordering Using Actual Edged Shape

1. Provide full prescription

   • Lens type
   • Prescription
   • Tints and/or coatings
   • Frame type or edge thickness

2. Shape outline

   Draw around former or edged lens with point of pen inclined inwards to ensure outline is true size and shape.

3. Centration

   Quote right and left monocular PDs. Quote right and left fitting heights measured from the HCL (old datum) or tangent to lower edge of lens.

4. Frame details

   State frame type or quote the lens edge thickness required at the thinnest point, no less than 1mm. If no edge thickness is quoted for a rimless frame we will automatically aim to ensure 2mm or 2.5mm at drill holes depending on lens material. Essilor gives a minimum edge thickness of 1.8mm for Nylon Frames.

You may also order Precal by telephone by quoting the lens type, prescription and coatings etc accompanied by:

• A standard shape number
• The A box measurement
• The B box measurement
• The boxed minimum distance between lenses
• The thinnest glazed edge requirement or frame type e.g. metal, plastic, nylon, rimless

TIP When it is difficult to clearly define the shape by number, shape No.7, (a rectangular shape with rounded corners) or shape No.5, (an oval shape) have been found to give consistently good results.