This may happen as the result of poor lower eyelid tone. Preoperatively, patients are examined for this potential deformity. Sometimes a tightening procedure called a canthopexy or canthoplasty is performed to provide better support to the lower lid. This is performed by suspending the corner of the eye at the latheral canthus to prevent \\u201cthe white of the eye\\u201d or sclera from showing too much.