Here are 7 things to know about prescribing your potency contact lenses
Understand your electric contact lenses » prescribing could be a difficult task. It is completely normal for the values and acronyms on the prescription to appear written in a foreign language.
Although it may seem confusing, the electric contact lenses prescription provides important details to contact lens suppliers, ensuring the safety of the contact lenses you purchase. Thus, allowing you to achieve the best possible vision correction for your eyesight.
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Why would I need a prescription for contact lenses?
Sale electric contact lenses without a prescription is not recommended and for the right reasons – after all, contact lenses are a medical device. Using contact lenses without the right prescription can induce distorted vision, sometimes pain or irritation, because they don’t fit the eye properly or are not made of the best materials that would suit your eye. your eyes. Note that ill-fitting contacts can also cause lasting damage to eye tissue in exceptional cases.
When will my contact lens prescription expire?
The expiration of electric contact lenses the prescription is something you need to be careful of. Using an expired prescription for your contact lenses can cause discomfort, dryness, and blurred vision.
Your optometrist will notify you when your contact lens prescription expires, depending on your eye condition. You should avoid purchasing contact lenses after your optometrist has expired your lens prescription, unless your optometrist changes the prescription. This will also require an eye exam to assess your overall eye health and ensure contact lenses are not causing you any discomfort.
What exactly does each section of your prescription say?
Your contact lens prescription contains a number of details that may be difficult to understand. To read your contact order, know these things:
- Base Curve (BC): The base curve defines the type of fit needed for the lens to fit the curve of the eyes. This dimension is normally expressed in millimeters, but it can also be expressed using terms such as flat, median or steep.
- Power/Sphere (PWR/SPH/D): This value indicates whether you are nearsighted or farsighted, as well as the degree of correction you will need. Your values will start with a plus (+) sign if you have farsightedness.
And, in case of myopia, it will start with a minus sign (-). Additionally, it will be followed by a number that starts at 0 and increases in 0.25 diopter increments. The higher the value, the greater or stronger the optical correction required.
- Diameter (DIA): The diameter of a contact lens is measured in millimeters and specifies the width that best fits your eye.
- Cylinder (CYL): If toric lenses are needed to correct astigmatism, your lens prescription will include cylinder and axis values. The cylinder would always have a negative integer that grows in increments of 0.50. The cylinder describes the value of astigmatism and any other visual need, identical to the power/sphere figure seen in all normal prescriptions.
- Axis (AX): An uneven curvature of the eye characterizes astigmatism, and the axis is a value that specifies the angle of correction required that would allow you to see correctly. A value between 0 and 180 degrees has always been used as the axis.
- Addition (ADD): If you have presbyopia, the “Addition” value indicates the degree of correction you will need to see correctly up close. A positive integer between 0.50 and 3.00 would be the addition value which is mentioned as low addition for near powers up to +1.50D and high addition for near powers greater than +1.50D in lenses multifocal contact lens used in case of presbyopia
- Dominant: If you are using multifocal or bifocal lenses, lens correction requires determining a dominant and non-dominant eye. The dominant eye, designated with a “D”, favors distance vision, while the non-dominant eye, designated with an “N”, prefers near vision.
Find yourself a leading contact lens supplier
After understanding how your electric contact lenses prescription features, you can consider a variety of contact lenses from trusted brands such as Bausch+Lomb, which offers a wide range of contact lenses. However, before actually buying a electric contact lenses, remember to consult with your optometrist and discuss which contact lenses would be best for your eyes.