μύωψ
ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
English (LSJ)
ωπος, ὁ, ἡ, (μύω, ὤψ)
A closing or contracting the eyes, as shortsighted people do, and so, shortsighted, Arist.Rh.1413a4, Pr.959a3, b38, Alex.Aphr.Pr.1.74. II as Subst. μύωψ [ῠ, but ῡ Nic.Th.417, 736], ωπος, ὁ, horse-fly, gadfly, Tabanus, ὀξυστόμῳ μύωπι A.Pr.675; βοηλάτην μ. Id.Supp.307, cf. Pl.Ap.30e, Arist.HA528b31, 552a29, al. 2 goad, spur, X.Eq.8.5; ἐν τοῖς μύωψι περιπατεῖν to walk in spurs, Thphr.Char.21.8; προσθεῖναι τοὺς μ. Plb.11.18.4, cf. AP5.202 (Asclep.); ox-goad, βουσόος μ. Cerc.8.2, cf. Call.Fr.46, A.R.3.277. 3 metaph., stimulant, incentive, Luc.Cal.14, Am.2; τινος to a thing, ῥόμβον θιάσοιο μ. AP6.165 (Phal.); τὸν μύωπα ἐμβαλεῖν τινι Ach.Tat.7.4. 4 a plant growing in the Achelous, Ps.-Plu. Fluv.22.5. 5 the little finger, Sch.Opp.H.3.254.