In my opinion, optometrists should not use the auto refractor results for spectacles prescription.

Some reading will be helpful ... here's an AI generated overview:

"An "autorefraction" is a computerized measurement of the eye's refractive error done by a machine without requiring patient input, while a "manifest refraction" is a more precise measurement obtained by asking the patient to subjectively choose which lens provides the best vision during the eye exam, essentially involving patient feedback to refine the prescription; meaning, autorefraction is an automated initial assessment, and manifest refraction is the final, patient-involved determination of the eyeglass prescription.
Key points about the difference:
Patient involvement:
Autorefraction is completely automated, while manifest refraction requires the patient to actively participate by indicating which lens provides better vision.
Accuracy:
While autorefraction provides a good starting point, manifest refraction is generally considered more accurate for determining the final prescription, especially in cases where the patient has irregular corneal shapes or other complex eye conditions."