Figure 3. Levels of DA, DOPAC, and HVA in the eyes of the three groups after the 8-week experiment. A: Retinal levels of DA, DOPAC, and HVA increased in the FLM group but decreased in the FDM group compared with controls (p<0.05). B: Expression of these substances in the vitreous body was comparable to their trends in the retina, whereas the vitreal DOPAC level in the FLM group showed no significant difference compared with that in the control group (p>0.05) and showed a significant difference compared with that in the FDM group (p<0.05). C: Levels of DA and its two metabolites in the RPE were significantly increased in the FDM and FLM eyes compared with control eyes (p<0.05; FLM: flickering light (FL)-induced myopia, FDM: form-deprivation myopia, DA: dopamine, DOPAC: 3,4-dihydroxyphenylacetic acid, HVA: homovanillic acid. *p<0.05 versus control group; #p<0.05 versus FDM group; data are presented as mean ± standard error of the mean [SEM]).