abnormalities
Last reviewed 01/2018
Observations can be as follows:
- direct response to light - a normal pupil should constrict briskly when a light is shone into it
- indirect - consensual - response to light - the pupil that is not having light shone directly into it should simultaneously constrict when its partner is stimulated in the manner; if this occurs, then it shows that the afferent pathway is intact
- Marcus Gunn phenomenon - this is paradoxical dilatation of the abnormal pupil a short time after illumination has passed over to it from the normal eye
light reflex absent with intact accommodation reflex
light reflex absent with absent accommodation reflex