Troubles with BoNT use in ophthalmology occur on account of toxin diffusion or inadvertent placement into the adjacent muscles. Ptosis in the eyelid is the commonest complication of BoNT treatment of strabismus and blepharospasms.23 Although this effect is nearly always non permanent and self-resolving, apraclonidine 0.5% (Iopidine) or phenylepheri