Clean the salad and place it in a large salad bowl. Combine yogurt, avocado, garlic, parsley, lime juice, red wine vinegar, olive oil and salt in a blender and process until smooth. Add more oil if need be. Mix the salad, radishes with the avocado dressing. Place a mound in a dish. Slice the hard boiled eggs and place them alongside the salad. Sprinkle the shaved Parmesan cheese in top of salad.