OET interlinear YHN (JHN) 10:21

uW Translation Notes:

Note 1 topic: figures-of-speech / metonymy

ταῦτα τὰ ῥήματα οὐκ ἔστιν δαιμονιζομένου

(Some words not found in SR-GNT: Ἄλλοι ἔλεγον Ταῦτα τά ῥήματα οὐκ ἐστίν δαιμονιζομένου μή Δαιμόνιον δύναται τυφλών ὀφθαλμούς ἀνοῖξαι)

Here, words refers to what a demon-possessed man would say. If it would be helpful in your language, you could express the meaning plainly. Alternate translation: [These things are not what a demon-possessed man would say]

Note 2 topic: figures-of-speech / rquestion

μὴ δαιμόνιον δύναται τυφλῶν ὀφθαλμοὺς ἀνοῖξαι?

(Some words not found in SR-GNT: Ἄλλοι ἔλεγον Ταῦτα τά ῥήματα οὐκ ἐστίν δαιμονιζομένου μή Δαιμόνιον δύναται τυφλών ὀφθαλμούς ἀνοῖξαι)

The people are using the form of a question to emphasize that they do not believe that a demon could heal a blind person. If you would not use a rhetorical question for this purpose in your language, you could translate these words as a statement or an exclamation and communicate the emphasis in another way. Alternate translation: [Certainly a demon cannot cause a blind man to see!] or [Certainly a demon cannot give sight to blind people!]

Note 3 topic: figures-of-speech / metonymy

τυφλῶν ὀφθαλμοὺς ἀνοῖξαι

(Some words not found in SR-GNT: Ἄλλοι ἔλεγον Ταῦτα τά ῥήματα οὐκ ἐστίν δαιμονιζομένου μή Δαιμόνιον δύναται τυφλών ὀφθαλμούς ἀνοῖξαι)

Here, open the eyes describes the ability to see by referring to something associated with vision coming into action, specifically, the eyes. If this would confuse your readers, you could express the meaning plainly. Alternate translation: [to cause the blind to see]