We report here on a Japanese male infant with megalocornea-mental reta
rdation (MMR) syndrome. He had megalocornea (corneal diameter: 13 mm)
without glaucoma, developmental retardation, hypotonia, frontal bossin
g, high-arched palate, carp-like mouth, micrognathia, and delayed myel
ination. He seems to be included in Verloes type of the MMR syndrome.