Lens ii 12.04.17,n.swathi.n
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Transcript of Lens ii 12.04.17,n.swathi.n
LENS - IIDr.Swathi.NMGMC & RI
Objectives:
• Stages of senile cataract
• Lens induced glaucomas
• Pre-op assessment of cataract
Age related senile cataract – • Cortical; nuclear
• Lamellar separation• Incipient cataract• Immature cataract• Mature cataract
• Intumescent cataract• Hypermaturity – morgagnian ; sclerotic
Senile nuclear sclerosis (yellow pigmented protein
derived from tryptophan)
Symptomatology :
• Asymptomatic• Astigmatism• Second sight / index myopia• Defective vision • Sudden painful loss of vision ???
Lens induced glaucomas
• Phacomorphic glaucoma
• Phacotopic glaucoma
• Phacolytic glaucoma
Phacomorphic glaucoma
Phacotopic glaucoma
Phacolytic glaucoma
Management :
Cataract surgery
Pre operative evaluation :
• Visual acuity & refraction• Intraocular pressure• Patency of NLD• Slit lamp evaluation & LOCS II• Fundus • A – scan; K reading – IOL power calculation• Systemic : diabetes, hypertension
• Types of senile cataract
• Stages of cortical cataract
• Lens induced glaucomas
Suggested reading :
• Management of cataract
• Intra-operative complications of cataract surgery
• Immediate & late post operative complications of cataract surgery