May try drops. Most important is to find out why the eyelid is drooping and rule out anything significant that might contribute to it. This is essential. If everything that might be related to the cause of a droopy eye is excluded it may be possible to use a low dose of neosynephrine (phenylephrine) drop infrequently to mask the droop if you do not desire a surgical correction. Only with advice and followup with ophthalmologist.