Developmental Cat - Congenital Developmental Cataract Copy...

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Congenital / Developmental Cataract Copy of power point presentation of lecture taken for junior final year by Dr Sanjay Shrivastava Professor of Ophthalmology Gandhi medical College, Bhopal (M.P.)
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December 24, 2011 Dr Sanjay Shrivastava 2 Classification of Cataract 1. Developmental 2. Age related (senile) 3. Cataract associated with ocular diseases 4. Cataract associated with systemic diseases (pre-senile) 5. Traumatic Cataract 6. Drug induced cataract
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December 24, 2011 Dr Sanjay Shrivastava 3 Developmental Cataract When cataract is present at birth it is called congenital. Types 1. Punctate : most common manifestation, in its minute form it is of universal occurrence. Multiple small opaque spots are seen scattered all over the lens. Types: a. Blue dot – appearing as tiny blue dots in oblique illumination.
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December 24, 2011 Dr Sanjay Shrivastava 4 Punctate Cataract b. Sutural – when opaque spots are crowded in the Y sutures c. Central Pulverulent Cataract – Autosomal dominant inherited, non- progressive, central spheroidal or biconvex opacity consisting of fine white powdery dots within embryonic or fetal nucleus.
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December 24, 2011 Dr Sanjay Shrivastava 5 Developmental Cataract.. Types 2. Zonular Cataract : accounts for approximately 50% of all visually significant congenital cataracts. Etiology – May have a genetic origin with a strong hereditary tendency of autosomal dominant type. They may have an environmental origin, due to malnutrition at late intra-uterine or early infantile life and Vitamin D deficiency. Patient may have Rickets and defective enamel of permanent teeth.
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December 24, 2011 Dr Sanjay Shrivastava 6 Zonular Cataract Zone around embryonic nucleus, usually area of fetal nucleus is affected and opacified. Its extent depends on the duration of the inhibiting factor. Sharply demarked opacity, area within and around opacity is clear; with linear opacities resembling spokes of a wheel (riders) running towards equator. Such cataracts are usually bilateral formed just before or shortly after birth, may be sufficient in diameter to fill the pupillary area and vision is affected.
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December 24, 2011 Dr Sanjay Shrivastava 7 Developmental Cataract- types 3. Fusiform Cataract – Spindle shaped, axial or coralliform. There is antero- posterior spindle shaped opacity sometimes with offshoots giving an appearance of coral.
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