2.按发病年龄( according to age of occurring):先天性( congenital)、婴 儿性( infantile)、青少年性 ( juvenile)、成年性( adult)、老年 性( senile) 3.按混浊部位( according to the site of opacity):皮质性( cortical)、核性 nuclear)、囊膜下( subcapsular) 囊膜性( capsular)
• 2. 按发病年龄(according to age of occurring): 先天性(congenital)、婴 儿性( infantile)、 青少年性 (juvenile)、成年性(adult)、老年 性(senile)。 • 3. 按混浊部位(according to the site of opacity): 皮质性(cortical)、核性 ( nuclear)、囊膜下(subcapsular)、 囊膜性(capsular)
4.按混浊的程度( according to the d e legree of opac ity):初期 incipient) 未熟期 (immature)、成熟期( mature)、 过熟期( hypermature)o 5.按混浊形态( according to the shape of opacity):点状( punctate)、冠状 ( coronary)、板层白内障( lamellar)
• 4. 按混浊的程度(according to the degree of opacity):初期(incipient)、 未熟期(immature)、成熟期(mature)、 过熟期(hypermature)。 • 5. 按混浊形态(according to the shape of opacity):点状(punctate)、冠状 (coronary)、板层白内障(lamellar)
年龄相关性白内 (age-related cataract) 是中老年开始发生的晶状体混浊,随着年龄增加 患病率明显增高。由于它主要发生于老年人中, 又称老年性白内障。分为皮质性、核性和后囊下 种类型。 is the most common one. often seen in the elder more than 50 years old. With aging its morbidity rate goes higher. It is gradually appeared degenerative change in the course of lens aging. Its pathologic mechanism isnt understood completely yet, related with ultraviolet ray, with systemic disease such as diabetes, hypertension, arteriosclerosis genetic factor as well as lens nourishment and metabolic condition and so on
年龄相关性白内障 (age-related cataract) • 是中老年开始发生的晶状体混浊,随着年龄增加, 患病率明显增高。由于它主要发生于老年人中, 又称老年性白内障。分为皮质性、核性和后囊下 三种类型。 • is the most common one, often seen in the elder more than 50 years old. With aging its morbidity rate goes higher. It is gradually appeared degenerative change in the course of lens aging. Its pathologic mechanism isn’t understood completely yet, related with ultraviolet ray, with systemic disease such as diabetes, hypertension, arteriosclerosis, genetic factor as well as lens nourishment and metabolic condition and so on
临床表现( clinical findings) 常双眼患病,但发病可有先后,严重程度 也不一致。主要症状为眼前阴影和渐进性 无痛性视力减退。由于晶体吸收水分后体 积增加,屈光力增强。因晶体纤维肿胀和 断裂,使屈光度不均一,可出现单眼复视 或多视。因光线通过部分混浊的晶状体时 生散射,干扰视网膜上成像,可出现畏 光和眩光
临床表现(clinical findings) • 常双眼患病,但发病可有先后,严重程度 也不一致。主要症状为眼前阴影和渐进性、 无痛性视力减退。由于晶体吸收水分后体 积增加,屈光力增强。因晶体纤维肿胀和 断裂,使屈光度不均一,可出现单眼复视 或多视。因光线通过部分混浊的晶状体时 产生散射,干扰视网膜上成像,可出现畏 光和眩光
症状( symptoms) 主要症状是视力模糊、减退、并可致盲。 其视力障碍与晶体混浊的位置有关 自觉症状有以下3点: 眼前出现固定不动的黑点; 2.单眼多视,物像变形或出现重影: 3.晶体性近视的出现是由于晶体核硬化
• 症状(symptoms) • 主要症状是视力模糊、减退、并可致盲。 其视力障碍与晶体混浊的位置有关。 • 自觉症状有以下3点: • 1.眼前出现固定不动的黑点; • 2.单眼多视,物像变形或出现重影; • 3.晶体性近视的出现是由于晶体核硬化