Piper H F
Klin Monbl Augenheilkd. 1977 Sep;171(3):384-91.
In cases of paralytic ectropion the slackened skin must not be resected but has to be used for the lifting of the lower eyelid. This aim can be reached by an antidromic skin shifting with an ypsiliform incision or in less difficult cases by a hook-shaped skin flap, who becomes effective as a curb of the lower eyelid by the exchange of the flaps.