Lens and cataract 罗怡( Luo yi.MDPh.D) Eye EnT Hospital 复旦大学附厲眼耳鼻喉科凄院
Lens and Cataract 罗 怡 （Luo Yi. M.D Ph. D) Eye & ENT Hospital 1
Lens anatom Sclera Choroid Ciliary Body and Muscle Vitreous Body. Fovea Centralis Ins in Macula Lens Optic Nerve Cornea Zonular lanelle 巴复旦大学附属眼耳鼻喉科蔗院
Lens Anatomy 2
Lens function 1. Refraction 2. Accommodation 复旦大学附厲眼耳鼻喉科箧院
Lens Function 1.Refraction 2.Accommodation 3
Lens Function----Refraction Cornea >refractive power: 43D(70%) >refractive index: 0=1.377 Lens >refractive power: 20D >refractive index n=1. 437 (nucleus>cortex) 复旦大学附属眼耳鼻喉科虔院
Lens Function----Refraction • Cornea: refractive power: 43D (70%) refractive index: n=1.377 • Lens: refractive power: 20D refractive index: n=1.437 (nucleus>cortex) 4
Lens function-- Accommodation ★ objects Ciliary Zonular fiber Shape of lens muscle distance relax tension flatten near contract relaxation spherical PresbyopIc Symptom loss of it 复旦大学附厲眼耳鼻喉科医院
Lens Function---- Accommodation objects Ciliary muscle Zonular fiber Shape of lens distance relax tension flatten near contract relaxation spherical Presbyopic Symptom loss of it 5