Anophthalmia and microphthalmia: A clinical case with a prenatal diagnosis

Abstract Introduction Anophthalmia and microphthalmia are serious eye malformations that describe, respectively, the absence of an eye and the presence of a small eye within the orbit. These conditions are the most frequent congenital eye malformations in the newborn, and the precise aetiology remains unknown, but they may occur in isolation or as part of a syndrome, with chromosomal, monogenic and environmental causes already identified. The pre- and post-natal diagnosis can be made using imaging techniques and genetic analysis. The authors present a clinical case diagnosed prenatally. Case report A 35 year-old primiparous woman, with normal first trimester examinations and karyotype 46,XX, in whom the ultrasound at 18/23 weeks revealed an asymmetry of ocular globes, with a small diameter of the left orbit. This study was complemented with foetal magnetic resonance that confirmed a severe microphthalmia in the left eye, with difficulty in observing the integrity of the optic nerve. The interruption of the pregnancy was discussed, but the parents did not want this. The remaining routine examinations were normal. The pregnancy was terminated at 37 weeks, palpebral closure with absence of ocular globe of the left eye and opacification of cornea and microphthalmia in the right eye was confirmed. Conclusion This case shows that a difficult diagnosis of a rare pathology can be made in utero by ultrasound. However, some are impossible to diagnosis, and this must be explained to parents.