Hypotelorism is a medical term used to describe a condition where the eyes are abnormally close to each other. Some synonyms for hypotelorism include hypertelorism or telecanthus, which are used to describe conditions where the eyes are abnormally far apart from each other. Hypophthalmia is another term used for hypotelorism, which describes a condition where the eyes are smaller than usual. Other synonyms for hypotelorism include microphthalmia, which describes a condition where the eyes are smaller than normal, and anophthalmia, which is a condition where the eyes are absent. These conditions can arise due to genetic abnormalities or as a result of environmental factors.