Symptoms blurred vision for both near and distance without pain Reduced intensity of colors 巴复旦大学附属眼耳鼻喉科医院
Symptoms • Blurred vision for both near and distance without pain • Reduced intensity of colors 11
Symptoms Vision field defects Hazy Glare Increased difficulty seeing at night Change in the eyes refractive error Second vision myopia increased 复旦大学附属眼耳鼻喉科医院
Symptoms • Vision field defects • Hazy Glare • Increased difficulty seeing at night • Change in the eye's refractive error Second Vision （myopia increased） 12
High risk factors Ultraviolet radiation Diabetes mellitus Drugs Smoking ●A| cohol Nutritional deficiency EENT 复旦大学附厲眼耳鼻喉科1院 15
High risk factors • Ultraviolet radiation • Diabetes mellitus • Drugs • Smoking • Alcohol • Nutritional deficiency 15 13
Mechanism >Oxidative damage >Free radicals Molecular chaperone of a-crystallin Apotosis EENT 复旦大学附厲眼耳鼻喉科1院
Mechanism Oxidative Damage Free radicals Molecular chaperone of α-crystallin Apotosis 14
Types of senile cataract 1. cortical cataract affects the layer of the lens surrounding the nucleus 2. nuclear cataract located in the center of the lens 3.posterior subcapsular cataract the back outer layer of the lens 17 复旦大学附属眼耳鼻喉科医院
Types of senile cataract 1. cortical cataract affects the layer of the lens surrounding the nucleus 2. nuclear cataract located in the center of the lens 3.posterior subcapsular cataract the back outer layer of the lens 17 15