Isometropia is a term used in ophthalmology to describe the condition of having equal refractive error in both eyes. However, there are several other synonyms that are used for this condition, including equimetropia, isometropism, and orthometropia. These terms all refer to the same underlying condition, where an individual's eyes have the same level of visual acuity and require the same correction for optimal vision. While isometropia is the most commonly used term, these synonyms are sometimes used interchangeably depending on the context. Regardless of the terminology used, isometropia remains a common condition that can have a significant impact on an individual's vision and quality of life.