What is a diopter in contact lenses?

Most terms on contact lens prescriptions are measured in diopters, a unit of refractive power that is equal to the reciprocal of the focal length in meters of a lens. Diopter is often abbreviated as D.

What do the diopters on my Prescription mean?

For glasses prescriptions, the diopters on your prescription such as -5.00 tells you how far your eyes can focus and therefore how much lens power is needed. It’s basically an inverse of the distance to your “edge of blur”.

How many diopters of glasses prescription equal a contact lens prescription?

Any prescription over -3.50 to -4 diopter, and add +0.25 diopters for every two diopters of increase: So a -4.00 glasses prescription is roughly equal to a -3.75 contact lens prescription.

How do I Convert my Prescription to contact lenses?

Any prescription over -3.50 to -4 diopter, and add +0.25 diopters for every two diopters of increase: So a -4.00 glasses prescription is roughly equal to a -3.75 contact lens prescription. Some advise starting conversion at -3.50.

Diopter Contact Lens Prescription - Contact Information Finder

Listing Results Diopter Contact Lens Prescription

All Time (0 Results) Past 24 Hours Past Week Past month

Please leave your comments here:

Contact List Found

Frequently Asked Questions
What is a diopter in contact lenses?
Most terms on contact lens prescriptions are measured in diopters, a unit of refractive power that is equal to the reciprocal of the focal length in meters of a lens. Diopter is often abbreviated as D.
What do the diopters on my Prescription mean?
For glasses prescriptions, the diopters on your prescription such as -5.00 tells you how far your eyes can focus and therefore how much lens power is needed. It’s basically an inverse of the distance to your “edge of blur”.
How many diopters of glasses prescription equal a contact lens prescription?
Any prescription over -3.50 to -4 diopter, and add +0.25 diopters for every two diopters of increase: So a -4.00 glasses prescription is roughly equal to a -3.75 contact lens prescription.
How do I Convert my Prescription to contact lenses?
Any prescription over -3.50 to -4 diopter, and add +0.25 diopters for every two diopters of increase: So a -4.00 glasses prescription is roughly equal to a -3.75 contact lens prescription. Some advise starting conversion at -3.50.

Diopter Contact Lens Prescription