Which eye formulation should be used first when administering treatments?

The rationale behind using the formulation with the lowest viscosity to the highest viscosity when administering eye treatments is primarily based on absorption and therapeutic effectiveness. Lower viscosity formulations tend to be more readily absorbed by the ocular surface, ensuring that the active ingredients can penetrate effectively. When these formulations are applied first, they can deliver their medicinal benefits quickly and efficiently across the eye.

As higher viscosity products are applied afterward, they can then retain moisture and act as a barrier, prolonging the therapeutic effect. If a high-viscosity product were to be administered first, it could potentially create a barrier that hinders the absorption of lower-viscosity medications, leading to a reduced therapeutic effect.

Using only one kind at a time is not optimal because it doesn't leverage the potential synergistic effects of different formulations that can be administered in a carefully selected order. Mixing formulations together could compromise their stability and effectiveness, as not all eye medications can be combined without reducing their therapeutic action.

The practice of administering eye treatments in this specific order maximizes the benefit of each medication used, ensuring that patients receive the best possible outcomes from their eye care regimen.