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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.
of different fabric weights (4oz vs. 2oz polyester)
Check local zoning laws, as some cities have specific regulations regarding temporary outdoor signage. buy feather flags
Flags typically range from 8 feet to 17 feet; taller flags are better for roadside visibility. of different fabric weights (4oz vs
In the competitive world of visual marketing, feather flags have emerged as a primary tool for businesses looking to capture attention and direct foot traffic. These dynamic, tall, and slender banners—named for their feather-like silhouette—serve as a bridge between traditional signage and modern mobile advertising. For any organization or small business owner, the decision to buy feather flags involves navigating a variety of technical specifications, material choices, and strategic considerations to ensure the investment yields a high return. In the competitive world of visual marketing, feather
If you are looking to narrow down your options, I can help by comparing: designs (which is faster/cheaper?) Pricing tiers from major online retailers
The hardware is equally as important as the flag itself. A standard kit typically includes a sectional pole made of fiberglass or aluminum, which provides the necessary flexibility to create the signature curve at the top. Selecting the right base is a logistical necessity based on where the flag will be placed. Ground spikes are ideal for soft surfaces like grass or soil at outdoor events, while cross-bases with weighted water bags are necessary for hard surfaces like sidewalks or indoor trade show floors.
Beyond durability, the printing method determines the visual impact of the flag. Most buyers must choose between single-sided and double-sided printing. Single-sided flags are "printed through," meaning the design is visible on the back as a mirror image with approximately 80% to 90% opacity. While more affordable and lighter in weight, they can be difficult to read if the text is not designed with mirroring in mind. Double-sided flags, conversely, consist of two separate pieces of fabric sewn together with a block-out layer in between. This allows for right-reading text on both sides, ensuring the message is clear regardless of the wind direction or the viewer's position.
*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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