Aphakia - Aphakia Aphakia Copy of Power Point presentation...

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Aphakia Aphakia Copy of Power Point presentation of Undergraduate (MBBS-prefinal year) lecture taken by Dr Sanjay Shrivastava Professor of Ophthalmology Gandhi Medical College Bhopal (M.P.)
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December 24, 2011 Prof Sanjay Shrivastava 2 Aphakia Aphakia When the crystalline lens has been removed condition is called aphakia. In this condition the crystalline lens is absent from its normal position.
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December 24, 2011 Prof Sanjay Shrivastava 3 Causes of Aphakia Causes of Aphakia 1. Congenital: a. True absence of lens, is a rare congenital condition, b. Posterior dislocation of lens (lens is completely out of pupillary area, in posterior segment).
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December 24, 2011 Prof Sanjay Shrivastava 4 Causes of Aphakia Causes of Aphakia 2. Acquired: a. Surgical removal of lens b. Complete absorption of lens in children following trauma (act like surgical procedure, needling) c. Posterior dislocation of lens (usually traumatic)
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December 24, 2011 Prof Sanjay Shrivastava 5 Symptoms of Aphakia Symptoms of Aphakia Marked diminution of vision (in previously emmetropic individuals)
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December 24, 2011 Prof Sanjay Shrivastava 6 Signs of Aphakia Signs of Aphakia 1. Markedly reduced visual acuity 2. Conjunctival scar may or may not be there 3. Corneo-scleral / corneal scar 4. Deep anterior chamber 5. Tremulousness of iris 6. Jet black pupil
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December 24, 2011 Prof Sanjay Shrivastava 7 Signs of Aphakia Signs of Aphakia 7. Absence of lens 8. High hypermetropic fundus 9. High hypermetropic refraction
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December 24, 2011 Prof Sanjay Shrivastava 8 Optics in Aphakia Optics in Aphakia Eye becomes high hypermetropic due to removal of lens. There is only one converging structure i.e. Cornea, which
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Aphakia - Aphakia Aphakia Copy of Power Point presentation...

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