Iwaszkiewicz E, Czubak M, Gałecki W, Woźniak W
Kliniki Okulistycznej II Wydziału Lekarskiego AM w Warszawie, Poland.
Klin Oczna. 1992 Nov-Dec;94(11-12):345-6.
The study presents conditions mostly described as co-existing with the keratoconus in 7 patients (from among 300 examined) born from an uni-ovular twin pregnancy. Only one pair of twins showed keratoconus of both eyes and developing identically in both eyes.