We report a 9-month-old boy with major features of Neuhauser syndrome, including megalocornea, mental motor retardation, hypotonia, dysmorphic findings (high-arched palate, broad nasal bridge, epicanthus), who also had additional findings such as Peters' anomaly, microcephaly, undescended testicle, patent ductus arteriosus and atrial septal defects. Ophthalmologic examination demonstrated central opacity of the left cornea and lens and iris adhesions extending from the pupillary margin to the borders of the opacity. Keratoplasty operation was done for the right eye owing to central corneal opacity. Neuhauser syndrome should be considered in the differential diagnosis of the patients with megalocornea, hypotonia and mental and motor retardation who have dysmorphic findings. To the best of our knowledge, Peters' anomaly has not been reported in Neuhauser syndrome previously.