Prescription Eligibility & Requirements
Learn more about requirements and eligibility for the TrueDark Rx program
What prescription types are supported?
The TrueDark Rx Program currently supports single vision prescriptions only. Progressive and bifocal lenses are not available at this time.
What are the supported prescription power ranges?
The following ranges are supported across all four compatible frames:. Prescription Component. Supported Range. Sphere. -8.00D to +3.00D. Cylinder. -2.00D to +2.00D (in 0.25 increments). Axis. 1°–180°. Axis Requirement. Required when cylinder is not
My prescription is outside the supported range. What are my options?
Unfortunately, prescriptions outside the supported parameters cannot be fulfilled at this time due to manufacturing constraints. We recommend monitoring truedark.com for updates as the program expands. In the meantime, you can use non-prescription Da
What is a Pupillary Distance (PD) and why do I need it?
Pupillary Distance (PD) is the measurement in millimeters between the center of your right pupil and the center of your left pupil. It is used to position the optical center of each lens directly in front of your pupils, ensuring accurate vision corr
How do I find my Pupillary Distance (PD) if it’s not on my prescription?
Ask your optometrist or ophthalmologist — they are legally required to provide your PD upon request in most U.S. states. Alternatively, you can use a printed PD ruler and a mirror to measure it yourself. Many online optical retailers (such as Zenni a
How recent does my prescription need to be?
Your prescription must be dated within the past 2 years from a licensed optometrist or ophthalmologist. Expired prescriptions cannot be accepted.
Do I need to upload my actual prescription document?
You will be asked to submit your prescription values at checkout either by uploading a digital copy of your prescription or by manually entering the values. Prescription eligibility is verified before your order is processed.