EE repairing 990 bucket tooth-air-arced old shank off day prior to incident. Was welding shank back into place date of incident.EE using Big40Miller Welder w 70/18 rods. Wearing weld helmet w/o safety glasses underneath.Felt pain in L eye at shift end,told super,but didn't seek med. treatment-as pain didn't subside EE req. med. treatment 7/23,finally sought treatment on 7/26/10.