The patient was a 26-year-old female. Since childhood, the poor visual acuity in both eyes could not be improved, so he went to Beijing Tongren Hospital affiliated to Capital Medical University. Deny history of ocular and systemic diseases, trauma, surgery, maternal infection, toxic exposure. Eye examination: the best corrected visual acuity was 0.15 for the right eye and 0.2 for the left eye; IOP was 14 mmHg (1 mmHg =0.133 kPa) in the right eye and 13 mmHg in the left eye; Under the slit lamp microscope, the lens nucleus and anterior cortex of both eyes were opaque, with a coral-like distribution (Essence Picture 1), and no other obvious abnormalities were seen in the anterior segment of both eyes. Clinical diagnosis: congenital coral cataract in both eyes.