Fixed dilated pupil after vitrectomy

  • Country:

    Canada

  • Age:

    38

  • Gender:

    Female

  • Do you suffer from pre-existing illnesses in the eye:

    Yes

    Detached retina
  • Did you perform any surgery for the eyes:

    Yes

    Vitrectomy (twice, to insert silicone oil and to remove it)
  • Do you use any eye drops:

    No

  • Do you wear lenses or glasses:

    Yes

    For myopia, not related to the retinal issues
  • Do you suffer from any diseases in the body:

    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 transiet effect with gradual return to normal or near normal within months due to reinnervation or sometimes it is a permanent damage/

 

Web Eye Clinic
 



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