Subhyaloid hemorrhage is usually a benign condition that generally imp
roves spontaneously and rarely causes visual loss. However, because su
bhyaloid hemorrhage may be associated with permanent macular changes b
efore it spontaneously resolves, posterior Nd:YAG hyaloidotomy may be
indicated in selected patients. We performed Q-switched Nd:YAG laser p
osterior hyaloidotomy via the transcorneal route in two cases of subhy
aloid hemorrhage. The hemorrhage instantaneously drained into the vitr
eous cavity, resulting in a dramatic increase in visual acuity.