An<unk>  is a written order by an ophthalmologist or an optometrist to an optician for<unk> es. It specifies the refractive power to which the<unk> es are to be made in order to correct blurred vision due to refractive errors, including myopia, hyperopia, astigmatism, and presbyopia. It is typically determined using a phoropter or an automated refractor.
Eyeglass prescription
Visual routine
Ocular prosthesis
Ophthalmoscope
Optometry
Audiometrist
Cataract surgery
Light therapy