同济大学：《眼科学》课程电子教案（PPT课件讲稿）白内障 Ophthalmology

Ophthalmology Lens Disorders For MBBS Class 2016

Ophthalmology For MBBS Class 2016 Lens Disorders

Learning objectives: Lens:Anatomy and Biochemistry Cataract Concept Classification Diagnosis Treatment-Surgery Intraocular Lens Development of anti-cataract drugs Ectopia Lentis

Learning objectives: . Lens: Anatomy and Biochemistry . . . Cataract Concept Classification Diagnosis Treatment - Surgery Intraocular Lens Development of anti-cataract drugs . Ectopia Lentis

Superior rectus m _Ora serata Ciliary body 感光系统 Lens:Anatomy .Posterior chamber Retina. Anterior Chamber Vitreoun Body Fovea centra 屈光系统 inferior rectus

Lens: Anatomy

Glycogen Glucose-6-PO Qehydrogenase Glucose Glucose-6-PO 6-Phosphogluconate NADPH Lens: Biochemistry Sorbitol Hexose Sorbitol Anaerobic Monophosphate Pathway Glycolysis Shunt NAD Normally utilizes Utilizes about Utilizes about 5% about 5%of 78%of glucose of glucose glucose 、NADH Fructokinase Fructose Fructose-6-PO Pentose-PO Phosphofructokinase Fructose-1-6-di-PO Lactic Lactate Pyruvate Krebs Citric Acid Cycle Dehydrogenase (Tricarboxylic Acid Cycle) NAD NADH

Lens: Biochemistry

Definition of Cataract: "Any congenital or acquired opacity in the lens capsule or substance,irrespective of the effect on vision,is a cataract." Cataract is a relative severe disease which can cause blindness.It may scare the patients.So,it is better not use it in the case that the lens opacity would NOT affect the vision of the patients. Use“lens opacity”instead. Cerulean Cataract

Definition of Cataract: Cataract is a relative severe disease which can cause blindness. It may scare the patients. So, it is better not use it in the case that the lens opacity would NOT affect the vision of the patients. Use “lens opacity” instead. “Any congenital or acquired opacity in the lens capsule or substance, irrespective of the effect on vision, is a cataract.” Cerulean Cataract

Cbafa:clinical observation and pathology.It consists of several subgroups based on the etiology or mechanisms.For example, Congenital ~may or may not be genetic. Age-related ~seen in most of the cases. Metabolic ~like diabetic and galactosemic Traumatic ~ Radiation ~ Nutrition deficient ~

Classification of Cataract: Cataract is a name based on clinical observation and pathology. It consists of several subgroups based on the etiology or mechanisms. For example, Congenital ~: may or may not be genetic. Age-related ~: seen in most of the cases. Metabolic ~: like diabetic and galactosemic ~ Traumatic ~: Radiation ~: Nutrition deficient ~: … …

Causes of Cataracts: It's not precisely understood why people get cataracts. Aging is a known risk factor (ARC) Others include: Smoking Excessive use of alcohol Diabetes Trauma to the eyes Extended use of corticosteroids Prolonged radiation or sun exposure

It’s not precisely understood why people get cataracts. Aging is a known risk factor (ARC). Others include: Smoking Excessive use of alcohol Diabetes Trauma to the eyes Extended use of corticosteroids Prolonged radiation or sun exposure Causes of Cataracts:

Cataract A.P.~ P.P~ Traumatic

Cataract A.P. ~ P.P. ~ Traumatic ~

Cataract:

Cataract:

Cataracts in systemic diseases DM Myotonic Dystrophy Atonic Dermatitis

Cataracts in systemic diseases DM Myotonic Dystrophy Atonic Dermatitis