The general symptom of cataract is a gradual loss of vision and finally blindness, without symptoms such as eye pain throughout the process. If patients suddenly feel a significant loss of vision without pain, they should consider that there may be a lesion in the fundus, such as: fundus hemorrhage, optic nerve papillopathy or retinal detachment, etc. They must see an ophthalmologist immediately and not mistake it for the cause of cataract.
During the development of senile cortical cataract, there is a process medically called expansion period. During this period, there is more water accumulation in the crystal, which makes it swell sharply, the volume increases and the anterior chamber becomes shallow, and the patient can feel that the vision decreases too fast at this time. If this glaucoma is not treated in time, it will cause permanent blindness, and even cataract surgery cannot save the vision. Overmaturity can cause crystal-derived endophthalmitis.