Vision Problems After Chemotherapy

Is my current blurred vision (looking through a dark gray fog) related to my chemotherapy treatments? On Aug. 31, 2011, I finished six cycles of Herceptin, Taxotere and Carboplatin (cisplatin) for Breast Cancer. I was also diagnosed with Lung Cancer and had a Lobectomy in April 2011. I am now receiving a maintenance dose of Herceptin every three weeks and just finished my 12th dose of Herceptin this January.

The gray fog first occurred in October 2011 in the right eye only. It came and went away in two weeks. However, this recent occurrence in January 2012 came on slowly, again only in the right eye. I've been looking through the dark gray fog for two weeks now. I just visited an ophthalmologist and he has referred me to a neuro-ophthalmologist. I hope this problem is temporary. Is it the Herceptin or one of the other Chemo drugs?