38 year old woman with only one eye. Her left eye was removed for retinoblastoma when she was a child. She has vision loss in the right eye for 2 weeks. She is 12 weeks pregnant and has had trouble with her past pregnancy and a miscarriage. Vision is 20/50. There is macular edema and a CRVO. She did well and recovered 20/16 vision in about a month with an ozurdex injection. Testing showed that she was homozygous for MTHFR c677t. Homocyteine results were not available.