Which contact lens is more powerful?
Which contact lens is more powerful?
The highest level of corrective power for monthly soft contact lenses is about -12 Dioptres (bear in mind that the average prescription for short sighted people is -2.00 Dioptres), and is available from both Purevision 2HD and Biofinity.
Do I need stronger contact lenses?
Hard contacts are more durable than soft ones. They’re easier to take care of but can be less comfortable. They often give better vision for conditions like astigmatism (when your eye is more oval than round) and can be a good choice if you have allergies.
How do I choose contact lens power?
If a GP lens is selected with a base curve radius that’s one-half diopter flatter (less curved) than the cornea, a contact lens power of -2.75D would be predicted. If the base curve radius is a half diopter steeper (more curved) than the cornea, a contact lens power of -3.75D would be predicted.
How to understand power in contact lenses healthfully?
If you are among the individuals with the same prescription for both eyes, you may see an OU for ocular uterque. Understand the sphere power of your lenses. Sphere power is the primary power in the lens to correct either hyperopia, farsightedness, or myopia, nearsightedness.
Which is better sphere or dioptor for contact lenses?
Sphere power is favorable if you are farsighted and negative if you are nearsighted. The unit of measure for sphere power is a dioptor, or D. Contact lens producers make lenses in 0.25 D power increments. The greater the sphere power is from absolutely no, the stronger the prescription.
How are contact lenses different from contact lenses?
And the power will also be different because, while a contact lens sits directly on the surface of the eye, eyeglasses sit about 12mm in front of it. So the eyeglass prescription must account for that distance as well. Each of your eyes may have different challenges to correct.
Can you wear contact lens higher than 0.75?
Yes, you can wear any prescription you want, but you should never wear a prescription that is higher than your own prescription. If my eyesight is -0.75, can I use a -1.00 contact lens instead of a -0.75? Yes, you can. But you shouldn’t. Overcorrection causes eye strain and headaches. Other than causing discomfort, your myopia will get worse.