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OD is an abbreviation for the Latin term oculus dexter which means right eye. Notice that the right eye information is asked for first even though we typically read from left to right.
OS is an abbreviation of the Latin oculus sinister which means left eye. That will be referenced on the far right column of the prescription.
SPH is short for sphere. The sphere of your prescription indicates the power on the lenses that is needed to see clearly. A plus (+) symbol indicates the eyeglass wearer is farsighted. A minus (-) symbol indicates that the eyeglass wearer is nearsighted.
CYL is short for cylinder. The cylinder indicates the lens power necessary to correct astigmatism. If the column has no value (is blank), it indicates that the eyeglass wearer does not have astigmatism. If this is the case on your prescription, you can leave it blank when entering it in.
AXIS is a prescription will include an axis value for those with astigmatism. This number represents the angle of the lens that shouldn't feature a cylinder power to help correct your astigmatism.
ADD is short for "additional correction." This is where details about bifocals, multifocal lenses or progressive lenses would appear.
Incluye soporte completo para español entre otros 28 idiomas. Requisitos Técnicos y de Instalación
Si eres propietario de un vehículo del grupo PSA (Peugeot, Citroën, DS) o de modelos recientes de Opel, habrás notado que el mantenimiento moderno requiere algo más que llaves inglesas. La herramienta se ha consolidado como la solución predilecta para aquellos que buscan un control total sobre la electrónica de su coche sin depender exclusivamente del concesionario oficial. ¿Qué es Diagbox 9.91 Top Full? diagbox 991 top full espanol
| Feature | Description | |---------|-------------| | | Reads vehicle identification number automatically and loads correct ECU map | | Multi-ECU Diagnosis | Accesses all electronic control units (engine, ABS, airbag, BSI, ESP, parking assistance, etc.) | | Live Data Streaming | Real-time sensor parameters with graph display (customizable units in Spanish) | | Actuator Tests | Remote activation of components (windows, injectors, fans, lights, relays) | | Fault Code Reading | Reads and erases DTCs with Spanish descriptions and troubleshooting hints | | Configuration / Coding | Enables/disables vehicle options (e.g., cruise control, DRL, TPMS) | | Key Programming | Programs transponder keys and remote controls (requires FICHIER code or PIN) | | ECU Firmware Update | Flashes updated software into ECUs (downloadable from official or offline packs) | | Guided Procedures | Step-by-step repair / calibration (injector coding, steering angle reset, oil reset, etc.) | | Wiring Diagrams | Full interactive electrical diagrams (Spanish labels + component location) | | Maintenance Reset | Service light reset, oil counter, DPF regeneration requests | | Immobilizer & BSI | BSI backup/restore, virginizing, PIN code extraction (restrictions apply) | | Multiplexing Support | CAN, K-Line, VAN (older Citroën models) | | Offline Operation | Works without internet after installation (full Spanish database included) | Incluye soporte completo para español entre otros 28
– Voice-guided diagnostic steps for common DTCs in Latin American and European Spanish variants. ¿Qué es Diagbox 9
*Discount applied on the current website price at the time of order. Offer only valid for new customer first contacts order over $10. Maximum discount of $100. Cannot be combined with any other offers. Promotions are subject to change without notice. We reserve the right to cancel orders that are in breach of the terms and conditions of this offer.
| Lens Width | Bridge Width | Temple Length | |
|---|---|---|---|
| XS | < 42 mm | < 16 mm | <=128 mm |
| S | 42 mm - 48 mm | 16 mm - 17 mm | 128 mm - 134 mm |
| M | 49 mm - 52 mm | 18 mm - 19 mm | 135 mm - 141 mm |
| L | >52 mm | >19 mm | >= 141 mm |
Buying eyewear should leave you happy and good-looking. Use our sizing tool to find frames that best fit your unique facial measurements.
Grab a regular card with a magnetic stripe on the back. Student IDs, credit cards and gift cards work well to start our online PD tool.
You may have received our paper PD measurement tool in your recent online order. In order to use this tool, place the ruler on your eyes so that the "0" lines up at the centre in between your eyes. Add up the two numbers, to get your PD. See example below:
Click on this link to download and print your own PD measurement tool.
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