There are many good reasons why contact lenses are quite popular nowadays. This is because they are easy to manage and they provide a crystal clear view. Remember that there are various contact lens suppliers on the market that provide a variety of contact lenses. But before you decide to purchase the contacts, your eye doctor may need to examine your eyes and give you a prescription. This article discusses contact lens prescription.
Reading your contact lens prescription
It’s worth noting that you don’t have to provide a physical prescription so that you can buy contacts from contact lens suppliers. Regardless of this, it’s a good idea for you to understand what it is. You can have the prescription on a piece of paper that your optometrist gives you. It can also be on the end side of the contract lens box or even on the blister packs that have your contact lenses. view here high power prescriptions.
Ideally, a contact lens prescription usually has several specifications that include the base curve, sphere, and diameter. Here is a detailed explanation of these specifications:
This figure stands for the power in Dioptres that the spherical lens needs to correct your sight. Individuals who are short sighted require negative powered contact lenses. Short sighted people can focus quite well for close work but fail to see clearly distant things. On the other hand, people with long sighted issues require positive powered lenses. These people find it hard to see close things clearly.
Remember that people who just want glasses for reading can also need positive powered contact lenses. In most cases, these people can be at least 40 years old or more. These contact lenses can help you to read but may blur the distance vision.
A cylindrical lens also called Cyl refers to a type of contact lens that corrects Astigmatism. You should note that astigmatism can be caused by the optical surfaces of the eyes not being spherical, so they are elliptical. As a result, this can lead to de-focusing of your eye for near and distance.
Therefore, you can correct this condition by using a contact lens that has the power in only a single direction. The lens required to do this is a cylindrical lens.
These types of contact lenses are rarely used compared to the sphere and Cyl. They are designed to move an image down, up, right, or left. This type of contact lenses are utilized to correct double vision, either constant or intermittent, or the tendency of the eyes to fail to work properly together. In such cases, one eye tries to drift slightly.
The base refers to the prism’s direction and has a reference point to tell you the direction of an image. The direction can be up, down, in, or out.
That said, you need to get a prescription for contact lenses. A contact lens contacts the cornea, so you need extra measurements when it comes to fitting contacts and they need to be in the prescription.