[Botulinum toxin injections for senile entropium].
Involutive changes in the collagen and muscular structures of the lower lid in ageing may lead to the formation of senile entropium. Treatment of this condition may be achieved using botulinum toxin injections to the dislocated orbicularis muscle. These injections lead to cessation of the symptoms for a mean of 3.8 months. Repeat injections are possible. Botulinum toxin injections are a viable option for patients who are not amenable to surgical correction of the entropium.