Well, wearing glasses with the wrong pd will not do harm to your vision, but it will make you feel uncomfortable. If you get a pair of incorrect glasses prescription, you are likely to have the symptoms of blurred or fuzzed images, eye strain, dizziness, vertigo, headaches or nausea. Under such circumstances, stop wearing the glasses and consider changing a pair of glasses. If you do not care about it, you may have difficulty in seeing while driving, which can cause an accident and pose a threat to your life. In a word, cherish your own body and wear glasses with the precise pd.