Short Answer
Complete Explanation
In ophthalmic and optometric prescriptions, the letters “PL” are a shorthand notation for “plano,” which describes a lens with zero dioptric power. When a prescription lists PL for one eye, it means that eye does not require corrective power, either because the vision is already within normal limits or because a corrective lens is not needed for that eye.
- Definition of PL:
PL stands for “plano,” indicating a lens that has no refractive power (0.00 diopters). - Usage in prescriptions:
Optometrists and ophthalmologists write PL when a patientâs eye does not need correction, or when only one eye requires a prescription. - Difference from 0.00:
While both PL and 0.00 convey the same optical power, PL is a conventional abbreviation used on many prescription forms for brevity. - How it appears on different formats:
On handwritten notes, electronic records, and eyeglass lab orders, PL may replace the numeric value, but the meaning remains consistent across formats.
Common Misconceptions
PL means the lens is polarized.
PL refers to “plano,” not “polarized.” Polarized lenses are a separate feature unrelated to prescription power.
PL indicates a power of +1.00 diopters.
PL signifies zero power; a positive numeric value such as +1.00 would be written explicitly.
FAQ
Is PL the same as a 0.00 prescription?
Yes, PL and 0.00 both indicate a lens with zero dioptric power; PL is simply an abbreviation.
Can PL appear on a prescription for both eyes?
It can, but typically it appears only for the eye that does not need correction, while the other eye may have a numeric value.
Do glasses with PL lenses need special ordering?
No special ordering is required; PL lenses are treated as standard lenses with zero power during fabrication.
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