The joint occurrence of Peter's anomaly, congenital central deep corneal opacity with an enterior cone-shaped polar cataract, and Rieger's anomaly, hypoplasia of iris stroma, dyscoria, and iridocorneal adhesions in the angle of the anterior chamber, is described. The term Peters-Riger's syndrome is proposed for this clinical association. Associated ocular anomalies which apparently have not been previously mentioned in the literature were dysversion of the optic disc, ganglionic neuroretinal hypoplasia (hypoplasia of the optic nerve), and downward ectopia of the macula. Other associated ocular and systemic anomalies of Peters-Rieger's syndrome are also mentioned.