no hablar inglés yo gracias
The normal WBC count is around 4000-11000. So yes, less than 4000 would be low
Answer: Refraction Phoropter
Explanation:
Refraction (refractive power): As light enters the eye, the lens helps focus light rays so that they come to a focus on the retina. This action is called refraction.
An instrument called a phoropter detects the eye’s error of refraction.
D. Im pretty sure!!! I hope this helps!