لَيْتَ عَيْنَيْهِ سَوَاءٌ
Would that his two eyes were equal.
The wish may be read favorably (both eyes equally sound) or unfavorably (equally defective). Tawjīh focuses on such opposed evaluative readings of one statement.
Tawriyah instead needs a particular expression with a near, plausible meaning and a remote intended meaning. Merely finding two contrasting possibilities is not enough to establish tawriyah. The solution must specify how the senses differ.