What is a requisite of all intraocular solutions?

Intraocular solutions are critical for various ophthalmic surgeries and treatments, and their requirements are stringent to ensure patient safety and effectiveness. One of the fundamental requisites is that these solutions must be sterile and preservative-free. This is crucial because intraocular applications are made directly into the eye, where they can easily introduce bacteria or contaminants if not sterile.

Preservatives, while useful in other topical medications, can potentially irritate or damage ocular tissues or interfere with therapeutic actions when placed directly in the eye. Therefore, formulations designed for intraocular use are specifically manufactured without preservatives to minimize any risk of adverse reactions.

Other options presented do not meet the specific criteria set for intraocular solutions. For instance, some solutions containing preservatives could lead to tissue irritation, while the inclusion of coloring agents or refrigerants is not a standard requirement and could compromise the solution's effectiveness or safety. Thus, the exclusive requirement for these solutions to be sterile and preservative-free is to ensure they are suitable for safe and effective use within the eye.