There are many criteria against which you can analyze measures and dimensions of your nose and their proportion to other parts of your face. By knowing characteristics of a beautiful nose, you can determine what changes your nose will need to reflect such beauty. It should be noted however that this beauty depends on your taste as well as your gender. On the other hand, these criteria differ from one nation or race to another. For example, Iranian people use nasal surgery to reduce the size of their noses while patients in some other countries, like East Asian countries, want their nose to be bigger. To analyze your nose, you need standards photos from different angles (full face and profile view with no makeup). Take photos under natural light and do not tilt your head as this will make appraisal process more difficult and inaccurate. Then use these photos to visually appraise your nose. Here is a brief discussion on common criteria for visual appraisal of the nose.
In profile view, the ideal angle between the nose and the forehead measures 115-135 degrees (Figure 4). Larger angles will make the nose look longer, while smaller angles make your nose appear shorter. Ideal outcomes can sometimes be reached just by modifying this angle without altering other parts.
In profile view, the proper angle formed by the nose and the face is 30 to 40 degrees. The ideal angle is 36 degrees (Figure 5). Your nose will look larger as this angle increases.
In profile view, the proper angle formed by the nose and the chin is 120-132 degrees. In this case, the upper lip is typically 4 mm away from the line connecting the nose to the chin, while the lower lip is placed at 2 mm from this line. Clearly, if over- or under-projected chin does not meet this criterion (Figure 6).
The first step in rhinoplasty is to visually appraise the nose and compare its dimensions to see whether it is in proportion to other parts of the face. The criteria described above are only a part of comprehensive criteria against which the nose should be appraised prior to surgery. You should analyze your photo and find the flaws in your nose before the surgery. Using this type of analysis and the applications developed for this purpose, you can better imagine what your nose will look life after the surgery and discuss your desirable outcomes during the pre-surgery consultation session.