Visually aligning dispensing unit

A method for applying eye drops to an eye of a user, the method comprising:

• placing a dispensing unit above the eye of the user in a dispensing configuration, wherein the dispensing unit comprises a dispensing barrel and one or more concentric rings disposed around a circumference of the dispensing barrel, wherein the one or more concentric rings comprise a first ring having a first polarization and a second ring having a second polarization that differs from the first polarization, and wherein the dispensing configuration comprises having the dispensing barrel disposed towards the eye of the user;
• aligning the dispensing unit so that the one or more concentric rings provide a visual indication of alignment above the eye of the user, wherein aligning the dispensing unit comprises aligning the first and second rings such that a user perceives a complete dark ring, wherein the complete dark ring results from the differing polarization of the first and second rings;
• and
• dispensing one or more eye drops from the dispensing unit to the eye of the user.