General Questions

Contact Lenses

What are contact lenses?

Eye glasses change the focus of light on the eye so that the picture on the retina becomes well focused. If one is short-sighted the glasses spread light, and if one is far-sighted the glasses concentrate the light. Contact lenses do exactly the same thing, but are made of materials that sit directly on the eye instead of on the nose.

Do contact lenses stop UV-light?

There are lenses that have some UV-blocking, but there are no lenses that stop the dangerous UV-light completely. Contact lenses only cover a part of your eyes and therefore should not be used as substitute for sunglasses with UV-protection.

Can a contact lens get lost behind the eye?

No, a membrane between the eye and the brain keeps objects from coming in behind the eye. If a contact lens disappears from the cornea it is somewhere under the eyelid.

Lens parameters

Where do I find my lens parameters?

You can find your lens parameters either on your lens package or on your prescription. The parameters stated are (PWR) Refractive power, (BC) Base curve, (DIA) Diameter and eventually (AX) Axis and (CYL) Cylinder. The values are sorted under (OS) for the left eye and (OD) for the right eye. The lens package or prescription will also state the lens type and brand. If you have any questions about your lens information you are welcome to contact out customer support.

What is Base Curve (BC) and radius?

The base curve and radius are different names for the lens cup-size. You can find your BC-measurement either on your lens package or on your prescription. Or ask your optician.

What is diameter (DIA)?

The diameter (DIA) states the measurement straight across the lens and differs depending on the lens type.

What does axis (AX) and cylinder (CYL) stand for?

Axis and cylinder are to values that describe astigmatism. Astigmatism is a refractive error and can be corrected with toric lenses. Read more about astigmatism…

Lens products

Are EyeQ Premium, Freshcare and Bioflex identical to Biomedics 55 Evolution?

Yes, the original lens is called Biomedics 55 Evolution. Several chains of opticians have chosen to change the name and package of this lens in order to market them as their own brand. Shopping4net sell the lens under its original name Biomedics 55 Evolution.

Are Acuvue, Acuvue2, Acuvue Advance and Acuvue Oasys monthly lenses or fortnightly lenses?

All of these Acuvue lenses can be prescribed as fortnightly and monthly lenses. Always follow your optician prescription on how often you should change your lenses in order to avoid complication.

Can I use FreshLook One Day Color without going through a fitting if I am currently using Focus Dailies daily lenses?

Yes, if you have a prescription for Focus Dailies you can also use FreshLook One-Day Colour without getting fitted.

Price and Quality

Why should I buy my contact lenses at Shopping4net?

• 40-60% cheaper than at the optician.
• Only original products from well-known manufacturers.
• Quick delivery.
• Lens guarantee ( we replace all broken lenses)
• Personal service.

Can I be certain that the lenses I’ve ordered are original items?

Medical products, such as lenses, must always be identical no matter where or by whom they are sold. Therefore you can be certain that the lenses you buy at Shopping4net are identical to the ones you’ve bought at the opticians. The only difference is that Shopping4net offers a cheaper, quicker and easier way of shopping.

How is it possible for Shopping4net to sell contact lenses so much cheaper than my optician?

The answer is large volumes, low costs and smart logistical solutions. Most opticians only meet a few lens bearers per day. In order for them to get volume discounts with their suppliers, the opticians need to fill a certain quota of orders. That’s why it may take days or week for you to get your contacts. At Shopping4net we don’t sit around waiting before we order your lenses, we try to already have them in stock.

The opticians need to keep a high margin on there sales prices, in order to meet the costs of rent, personnel and storage etc. Since our shop is exclusively on-line, we don’t have the costs of a “physical” store.

We focus on keeping the largest possible stock of contact lenses, and on finding new logistical solutions. Our goal is to offer the quickest, easiest and most convenient way of shopping lenses.

Refractive error

What is astigmatism?

Astigmatism is a sort of refraction error caused by an irregularly shaped cornea. Toric lenses are used to correct astigmatism. Read more about astigmatism.

Can refractive errors come with ageing?

Yes, refractive errors can come later in life. The ability to focus and see well at short distances decreases with age. When this change in the lens occurs, the lens may be distorted and refractive errors may arise. If a refractive error already exists it can become greater or lesser through the change.