Image ghosting problem cannot solve

sorry to bother you,when I use the openmvH7Plus to take image of pupil,I find the image has the ghosting problem,it shows like this,and the script is showing in the second image

the pupil is not circle any more,it shows like a gourd,but other parts display normally,at the first time,I think the reason is my pupil moving,but the three image have the same problem,Could you please help me solve this problem? Thank you

What’s the issue exactly? The picture looks correct?

the pupil is not correct,it seems like a gourd

I’m not sure what you want me to say… what the pupil looks like in reality isn’t ideal.