Since my neck dissection almost 2 weeks ago, I have become aware of a slight difference in the size of the pupils in my eyes.
My surgery was on the right side, and I have noticed my right pupil is slightly smaller than the left.In addition, I have a slightly droopy right eyelid and my eyeball feels a little sensitive. Initially, I thought this was down general manhandling during the operation, but research indicates this could be a condition known as aniscoria, and a result of lymph node removal creating pressure/swelling on that side of my face.
This condition does not affect my vision but I have noticed that extended reading, watching TV or computer use does tire me out.
Wondered if anyone else has any insight into this ( and if it temporary) ?

I did not have a ND but noticed a droopy eye lid on my right side after radiation. I also had some difficulty with focus in that eye for a time. These look to be diminishing over time. The droopy lid is gone and the strain is much less now 10 months out.

I do know that one of the radiation lines from the IMRT was right behind my right eye as my RO was worried about its proximity to the optic nerve.

I just finished treatment, and my left eye was closing from eye lid weakness, I believe, but I'm blind in the left eye anyway from chemo in November 2009 with Taxotere, Cisplatin, 5-FU causing ocular toxicity, which caused or contributed to several eye diseases...Optic Ischemic Neuropathy, and Neovascular Glaucoma that made me blind 8 months later. Before the blindness, one pupil was bigger than the other for quite some time, which is caused by many factors, but I didn't seek further treatment, being I was in the hospital or 6 months, and didn't want to go back to see anyone about it. This same eye changed to a dark color after the blindness, surgery, probably from blood, and my right eye is blue. Last week I went to my Opthomolgist, who did my eye surgery, to check my eyes by doing a dilation, and optic nerve tests, which were found to be ok, except the blindness, but gave me cortisone cream for the eye irritation, and dryness.

Surgery for a neck dissection can cause blindness, but not sure to what extent for other conditions. The same with radiation, can cause blindness, chemotoo, and other eye conditions, If there is damage to certain nerves. I would also see an Opthomolgist to have the eyes checked, because once your vision goes, it may not come back. Good luck.

Told by my Consultant this week that this condition is infact Horner's Syndrome and for me, is most certainly temporary.

Good news it's temporary! Thanks for the name of the ailment.

Yeah!!!! Heal well.