How should cataracts be categorized?

1, senile cataract The most common type of cataract. Age-related cataract is an aging phenomenon, with the increase of age, the crystal body will slowly occur hardening, clouding and causing visual impairment. Early symptoms: foggy vision, color change, black spots in front of the eyes, crystalline myopia, diplopia, etc.; late symptoms: visual impairment deeper and deeper, and finally can only identify the manual in front of the eyes or only remaining light vision.

2, congenital cataract is due to heredity, chromosomal mutation, intrauterine infection caused by cataract. The symptom is that soon after the baby is born, parents find white or gray cloudy spots in the pupil. Sometimes the eyeballs will be accompanied by nystagmus, the visual development is worse than normal infants, and there is no active grasping response to the bottle and toys in front of the eyes.

3. Complicated cataracts are caused by intraocular diseases, such as iridocyclitis, glaucoma, retinitis pigmentosa, vitreous degeneration and other secondary cataracts.

4, traumatic cataract caused by car accidents, blunt force injuries, sharp objects or penetrating intraocular foreign body. The symptom is the rupture of the crystal capsule, resulting in clouding of the crystal, which leads to visual impairment.

5, drug cataracts Long-term use of steroids caused by cataracts, as long as the use of steroids to stop, some cataracts can be restored. But most patients once the cataract, more or less will remain unrecoverable crystal clouding.

6, metabolic cataract due to endocrine diseases or biochemical abnormalities caused by cataracts, such as diabetes, hypocalcemia, hypothyroidism, mono-milk glucosemia and other diseases may cause cataracts.

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