Which test helps determine the prescription for a patient?

Determining a patient's prescription involves a comprehensive assessment of various visual parameters. The correct answer encompasses three essential methods: lensometry, auto refractor, and visual acuity testing, all of which together provide a detailed view of a patient’s visual needs.

Lensometry measures the prescription of existing glasses, allowing the technician to understand what corrective lenses the patient is currently using and how effective those lenses are. This is crucial for understanding the patient's baseline vision.

An auto refractor provides an automated measurement of the refractive error in a patient's eyes. This tool helps quickly generate an initial refractive error estimate, which is valuable for forming a starting point for the optometrist's further testing.

Visual acuity testing measures how well a person can see at a given distance, which plays a key role in establishing the need for corrective lenses and their strength.

Together, these assessments help create a complete picture of the patient's visual requirements, ensuring that an accurate and suitable prescription is provided. The integrated use of these testing methods allows an optometric technician to contribute effectively to the eye care process by formulating a prescription that best supports the patient's vision needs.