SW Choi, et al. A CASE OF PHOTIC RETINAL INJURY ASSOCIATED WITH EXPOSURE TO PLASMA ARC WELDING Fig. 1. Fundus photograph shows a round yellowish lesion at the parafoveal area (both eyes). (OD) (OS) Fig. 2. Amsler grid test shows a round scotoma in the central region (both eyes). 2). The lesion of the macula was scanned using OCT, and no abnormal signs were observed (Fig. 3). H-R-R plates (Hardy-Rand-Rittler plates) were used to test color vision and no abnormal signs were observed. On the same day, the patient was examined with fluorescein fundus angiography. In the early phase, ring-shaped paracentral hyperfluorescence appeared simultaneously with a central dark halo. In the late phase, the dark center of the lesion was surrounded by progressively increasing hyperfluorescence (Figs. 4, 5, 6, and 7). He was put under observation without any specific treatment for a month. After a month of follow-up studies, his best corrected vision improved to 1.0 and the central scotoma disappeared. The lesion in the macula was no longer visible. Discussion Welding-induced photic retinal injury is clinically rare and was first reported by Terrien in 1902. The high temperature light waves that are radiated while welding emit wide ranges of electromagnetic waves. UV, near ultraviolet ray, and blue light, all part of the wider ranging light spectrum, can damage the eyes. Welders are also susceptible to an increase 251