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Cataract
 

Cataract

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    Cataract Cataract Presentation Transcript

    • DEFINITION AND CLASSIFICATION OF CATARACT
    • ‘ CATARACTA’(LATIN)MEANING ‘WATERFALL’
    • DEFINITION: CATARACT IS CAUSED BY OPACIFICATION AND DEGENERATION OF LENS FIBRES ALREADY FORMED, THE FORMATION OF ABBERENT LENS FIBRES OR DEPOSITION OF OTHER MATERIALS IN THEIR PLACE.
    • CATARACT
    •  
      • ETIOLOGY:
      • EYE INJURY
      • SUN EXPOSURE
      • SMOKING
      • HYPERTENSION
      • KIDNEY DISORDERS
      • DIABETES MILLETUS
      • LONG TERM USE OF STEROIDS
      • TOXIC SUBSTANCES
      • HEREDITARY
      • PATHOGENESIS:
      • DEGENERATION
      • OPACIFICATION
      • DEPOSITION OF OTHER MATERIAL
      • ABNORMALITY OF LENS PROTEIN
      • DISORGANISATION OF FIBRES
      •    Blurred vision
      •   Need for frequent changes in your eyeglasses or contacts 
      • Trouble in driving at night ( Glare ) 
      • Sensitivity to bright light 
      • Change in color vision ( yellow , orange , and red appear brighter and WHITE appears dull).
      • Polyopia and monocular diplopia
      • Coloured haloes
      SYMPTOMS:
    • BLURRED VISION DUE TO SCATTERING OF LIGHT ON THE RETINA
    • blurred vision
    • GLARED VIEW(TROUBLE DRIVING AT NIGHT)
    • CHANGE IN COLOUR VISION(DIMNESS)
      • CLASSIFICATION :
      • BASED ON :
      • MORPHOLOGY
      • AGE OF ONSET
      • MATURITY
      • ETIOLOGY
    • MORPHOLOGIC: 1.CAPSULAR CATARACT -ANTERIOR CAPSULAR CATARACT -POSTERIOR CAPSULAR CATARACT 2.SUB CAPSULAR CATARACT -ANTERIOR SUBCAPSULAR CATARACT -POSTERIOR SUBCAPSULAR CATARACT 3.NUCLEAR CATARACT 4.CORTICAL CATARACT
    • 5.LAMELLAR/ZONULAR CATARACT 6.SUTURAL CATARACT
    • - POSTERIOR SUBCAPSULAR CATARACT -CORTICAL CATARACT -NUCLEAR CATARACT -MATURE CATARACT
    • AGE OF ONSET: 1.CONGENITAL 2.INFANTILE 3.JUVINILE 4.PRE-SENILE 5.SENILE
    • CONGENITAL CATARACT
    • INFANTILE AND JUVINILE CATARACT
    • MATURITY: 1.INTUMESCENT CATARACT 2.IMMATURE CATARCT 3.MATURE CATARACT 4.HYPERMATURE CATARACT 5.MORGAGNIAN CATARCT
    • MATURE AND IMMATURE CATARACT
    • IMMATURE CATARACT
      • ETIOLOGIC:
      • TRAUMATIC CATARACT
      • METABOLIC CATARACT
      • TOXIC CATARACT
      • COMPLICATED CATARACT
      • INTRA UTERINE CATARACT
      • HERIDITARY CATARACT
      • RADIATIONAL CATARACT
      • ELECTRIC CATARACT
    • 9. CATARACT ASSOSCIATED WITH SKIN DISEASES-ICHTHYOSIS,ATOPIC DERMATITIS 10.CATARACT ASSOSCIATED WITH OSSEOUS DISEASES-PARATHYROID TETANY 11.CATARACT WITH MISCELLANEOUS DISEASES-DYSTROPHIA MYOTONICA,ALPORTS SYNDROME,DOWNS SYNDROME AFTER CATARACT
      • SUBJECTIVE CLASSIFICATION:
      • GRADE 0: CLEAR LENS
      • GRADE 1: SWOLLEN FIBRES AND SUB CAPSULAR OPACITIES
      • GRADE 2: NUCLEAR CATARACT AND VISIBLE LENS FIBRES
      • GRADE 3: STRONG NUCLEAR CATARACT WITH PERINUCLEAR AREA OPACITY
      • GRADE 4: TOTAL OPACITY
    • SUBJECTIVE CLASSIFICATION
    • THANK YOU !