A prescription for glasses is not the same as a prescription for contact lenses. This information also indicates the degree of nearsightedness, farsightedness, or astigmatism in each of your eyes. Suite 200 Ill try to make this explanation of your glasses prescription as user-friendly as I can. Enter the Sphere and Cylinder values from your prescription into the Lens Calculator below and click the Calculate button to determine which of our lenses would best suit your needs. Questions or Concerns? The column labeled Sphere is especially useful, since a value closer to zero represents a more mild condition. This is illustrated by simulating the blurry perception of a Snellen eye chart, which is commonly used to make eye examinations. Doctors use this to tell you that you need single vision lens instead of bifocal or progressive lens. This value only applies to people who have astigmatism, a common problem with the curvature of the cornea in front of the pupil. On the other hand, a contact prescription will include more advantages when we talk about the healing of your sight no matter what kind of type of problems it needs. We avoid using tertiary references. The decision to order glasses is frequently sufficient for some parents to seek a second opinion, so it is important to spend time speaking to the parents so that they understand the underlying reasons. People can start developing presbyopia when they are in their 20s. When it comes to the left eyes we talk about the O.S is what we can Oculus Sinister. A farsighted persons eyes dont have enough focusing power, so they have to use muscles to squeeze the lens of their eyes to add focusing power. Slowly move your head back till focus looks blurred, as indicated red arrow in the sample image. Rx Lens Info - Deep Blue Gear Because contact lenses sit directly on the surface of your eye, they need additional information, such as the base and curve of your eye. For example, if you focus perfectly in the horizontal (left to right, or straight across) position, but have one unit (called a diopter) too much focusing in the vertical (up and down) position, then your prescription would read: plano (zero) -1.00 at 180. Lens brand or material. The more nearsighted you are, the higher the numbers will be. The CYL can answer your question about how bad is my eye prescription. Presbyopia is a normal part of the ageing process, and it usually begins sometime after age 40. That means you can read a letter at 20 feet that people with "normal" vision can read at 200 feet, meaning you have very poor visual acuity. Your glasses prescription is fairly simple and consists of three parts: Sphere: this tells the person making your glasses if your eyes needmoreorlessfocusing power to see clearly. The axis is labeled as a number from 1 to 180. Here we are indeed dealing with the concept of the base curve. The more nearsighted they are, the closer they can see clearly. If the PD of your basic prescription is 29.5/31.0, the reading PD would be 28.0/29.5. The content on this site is for informational purposes only. Diabetic retinopathy is a condition that can affect people with diabetes.
how bad is my eye prescription calculator