1. Congenital pterygium Conjunctival pterygium can occur at any age. Congenital pterygium is rare but has been reported by Jacklin' in 1964 in six members (four females, two males) in a three generation kindred. Murken and Table 2 Environmental factors thought to play a role in pterygium of the conjunctiva and cornea
2. Familial predisposition to pterygium formation: report of a family;HN, I.Jacklin;AmJ Ophthalmol,1964
3. Zur Genetik des Pterygium corneae;Murken, J.D.; Dannheim, R.;Klin Monatsbl Augenheilkd,1965
4. Mendelian inheritance in man;McKusick, V.A.,1988
5. An investigation of aetiology and heredity of pterygium. Report of 11 cases in a family;Zhang, J.-D.;Acta Ophthalmol (Copenh),1987