an instrument used to determine refractive errors of the eye iscalled ___

The aim to the examination is to get refractive status and best corrected visual acuity.

The aim to the examination is to get refractive status and best corrected visual acuity. A: 正确 B: 错误

The factors influencing the material mixing operation in the preparation process are A: Particle size distribution B: stack density C: Particle surface state D: Refractive index E: flowabilit

If the abnormality in the visual acuity is improved with pinhole test then most likely cause of decrease visual acuity is A: cataract B: Glaucoma C: Corneal opacity D: refractive error E: all of the above