Fixed dilated pupil after vitrectomy

 

 

Submitted by Anonymous (not verified) on Wed, 12/12/2018 - 23:09
Country
Canada
Age
38
Gender
Female
Did you perform any surgery for the eyes?

Vitrectomy (twice, to insert silicone oil and to remove it)

Do you suffer from pre-existing illnesses in the eye?

Detached retina

Do you suffer from any diseases in the body?
No
Do you use any eye drops?
No
Do you use any eye drops?
No

Question

 

 

Hi,

Is a permanently dilated and fixed pupil a normal side effect of vitrectomy surgery that includes laser treatment, or is it caused by surgical error that damages the nerves controlling the pupil? 

Thanks

 

Answer

Thanks for your Question

Tonic pupil or Fixed Dilated Pupil after vitrectomy surgery can be caused by thermal damage to short ciliary nerves by endolaser photocoagulation. Endolaser is very important during vitrectomy surgeries and one of its common but undesirable complications is tonic pupil.

Short ciliary nerves pass through suprachoroidal space to supply iris muscles and damage to these nerves will affect pupil dilation. It can be a transient effect with gradual return to normal or near normal within months due to re-innervation or sometimes it is a permanent damage,

 

 

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