Glasses pass
A glasses pass is a document that contains essential information about corrective glasses , in some cases also order details for their production. It represents a service and is handed out by the company that delivers the glasses to the customer, usually by an optician . The glasses passport, which is usually about the size of a bank card , is personal and contains the name of the glasses wearer. In addition to information about the thickness and material of the glass, information about the type and size of the glasses frame, the manufacturer and the date of issue are also often noted.
There are no binding guidelines or standards with regard to the content, structure or appearance of a glasses passport, which is why they usually differ from optician to optician. The benefit of a glasses passport is that it is easy to carry with you and, in the event that glasses are lost or damaged, they can be quickly made by any optician or at least replaced at short notice using the information noted.
Frequently used abbreviations on glasses passports and their meaning:
| abbreviation | meaning |
|---|---|
| R or RA | right eye |
| L or LA | left eye |
| Sph | Sphere : mostly in 0,25er increments graded correction value with the unit " diopter " for a short (-) or farsightedness (+) |
| Cyl | Cylinder : correction value usually graduated in 0.25 steps with the unit "diopter" for a corneal curvature (depending on the calculation - or +) |
| A. | Axis : Axis position of the cylinder with the unit "degree" in integer graduated values between 0 ° and 180 ° |
| P or Pr | Prism : prismatic effect of a spectacle lens with the integer unit “ prism diopter ” to compensate for a manifest or latent squint |
| B or Bas | Basis : basic position of the prism with the unit "degree" with integer graded values between 0 ° and 360 °, often just "inside", "outside", "above" or "below" |
| F. | Distance : Correction values for distance glasses or the distance part of multifocal glasses |
| N | Proximity : Correction values for close-up glasses (often also called reading glasses) or the near part of multifocal glasses |
| Add | Addition : graduated in steps of 0.25 with the unit “diopter”, in addition to a distance correction, usually for a close distance |
| HSA, HS or H | Corneal vertex distance with the unit “millimeter”, distance between the posterior surface of the lens and the anterior corneal surface of the eye |
| PD | Pupillary distance with the unit “millimeter”, distance between the eyes or the distance between the right and left eye and the center of the face |
| EP or H (Fielmann) | The grinding height ("eye point") with the unit "millimeter" describes the distance from the lower edge of the frame to the remote centering point. |
