Eye and ear drop days supply
Days supply from bottle size, drops per mL, and directions.
Inputs
CompletemL
bottles
drops/mL
drops
Eyes or ears
per day
Worked calculation
Your values are highlighted.
- Days
When to use
- Billing ophthalmic or otic solutions.
Pearls and pitfalls
- Drop counts vary from about 15 to 30 per mL by product; 20 is a common payer default.
- Suspensions and gels give fewer drops per mL.
- Latanoprost 2.5 mL is usually billed as 25 days for both eyes once daily.
Why use
Avoids the most common ophthalmic billing reject.
Days = bottle mL × drops per mL ÷ (drops per eye × eyes × times per day)
Rounded down.