Tropicamide S isomer is a drug widely used in ophthalmology for its mydriatic and cycloplegic effects. However, it may be beneficial to explore alternative terms that describe this compound. One synonymous expression for Tropicamide S isomer is "(-)-Tropicamide". This term refers to the stereochemistry of the molecule and distinguishes it from the (+)-Tropicamide. Additionally, another synonym often used is "Isopto Homatropine". This alternative name reflects the therapeutic indication of the drug as a mydriatic and cycloplegic agent. While these terms may be used interchangeably to refer to the same compound, it is critical to ensure the appropriate dosage and usage guidance when utilizing these alternative names.