The advent of laser therapy has given doctors a noninvasive means of applying treatment within the eye by passing laser light through the cornea and onto the retina. Now, the emergence of diode lasers has taken this process a step further by enabling the photocoagulator to be sent overnight by courier to anywhere in the world for treatment of an affected child. The mechanism of passive stabilization which gives the lasers characteristics suitable for photocoagulation is discussed in detail in this article.