The front neck shaping is worked with decreases and increases (see photo below and page 2 of pattern). Sweater has optional crochet edging around neck, cuffs and hem. This sweater is a wardrobe staple worth having in more than one color, and it is a fast knit! (from pattern description) Also available on Craftsy.
In general, if the ptosis is caused by a systemic muscle weakness, other muscles in the face, head, or body may be affected. A drooping eyelid can also be a symptom of a brain tumor or stroke, especially if it comes on within a few days or a few hours or if just one eye is involved.
Your eye muscles (orbicularis oculi muscle) help to support your eyelid and keep it from drooping. It is possible that Botox placed too close to this part of the eye muscle can cause decrease in support of the lower eyelid and cause it to droop slightly. If this happens it's feasible to get slightly dry eyes....