The Figure demonstrates the evolution from relatively mild telangiectatic vascular changes over the superior optic nerve in a youth to a large, typical combined hamartoma of the optic nerve 5 years later.1,2 Over this period, the visual acuity declined from 20/40 OS to 7/200 OS. Shields et al3 reported their experience on 77 cases of combined hamartoma of retina and retinal pigment epithelium and noted that progressive vision loss occurs in only 13% of extramacular tumors, as this case was initially according to their definition. In contrast, if the macula is involved, progressive vision decline was noted in 60% of cases.