Vidalista 60  Blurred vision or difficulty focusing. Changes in colour perception, although these are less typical with tadalafil than with sildenafil. Rarely, sudden loss of vision in one or both eyes, which can be serious and potentially permanent. DailyMed +1 Is Vidalista 60 a high dose? Yes. Vidalista 60  is above the usual maximum recommended as-needed dose of tadalafil for erectile dysfunction, which is 20 mg. Higher doses may increase adverse effects, so don't take another dose or use it again until you've discussed the dose with a doctor. If you experience sudden vision changes or vision loss, stop taking it and seek emergency medical care immediately. Have you already taken Vidalista 60 and noticed a vision change, or are you asking before taking it? If you've noticed a change, tell me whether it's blurring, a blue/yellow tint, or sudden loss of vision.