How should the size of pupil measured in clinical examination??

Question

and how to classify it into constricted,normal or dilated??is there any such classification or is it just observer dependent judgement.
Please do give reference to your answer also.

Answer 1

It is just an observer dependent judgement. The size of the pupil always depend on the amount of Visible light enters the eye. If no visible light enters, it is dilated (1.5 mm Diameter) which means that the inner involuntary muscle of the iris stretches and the size of the pupil increases. It is constricted (8 mm Diameter) when high amounts of Visible light enters the eye which means when the iris contracts, the pupil size decreases. It is normal when the amount of Visible light is moderate. It is all in the natural relationship of Luminous Intensity and Pupillary Reflexes.

Answer 2

You use a small plastic measuring stick that measures in millimeters. You positioned it below the attention at the external of the attention lid similar to you could if you happen to had been meauring whatever else. Generally while you're doing this, you're doing it for a rationale in a eye general practitioner's workplace like seeking to see if the sufferer has reached the highest dilation that you simply count on when you installed drops. In usual mild, the scholar starting in so much individuals might be approximately five millimeters(mm). Once dilated, the scholar might be approximately 9mm. Someone utilizing drops that make the scholar smaller, like for glaucoma, might be approximately two mm-3mm.