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.
However, ptosis of the upper eyelid can be a symptom of several health conditions, including diabetes, diseases of the nervous system such as myasthenia gravis, or damage to the third cranial nerve that controls the eyelids. Myasthenia gravis is a serious autoimmune neuromuscular disease that results in nerve weakness.
As you look at your eye, a sizable part of your iris (the eye's colored circle) should be visible above your pupil, and no part of the pupil itself should ever be covered by the eyelid. If you have ptosis, the drooping eyelid narrows your eye's opening, which makes your affected eye appear smaller than normal. You also may lose the crease (fold of skin) that normally lies between your upper eyelid and eyebrow.