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Dry Eye ( Not a Disease , But A Symptom Complex) (Treatment (Preservation…

- - - - Primary Age related Hyposecretion ( Most Common)
      - Lacrimal Gland DEFECIENCY
        
        Congenital Alacrima
        Post Radiational Fibrosis
        Sarcoidosis
      - Lacrimal Gland Duct Obstruction (Old Trachoma , Chemical Burns)
      - Reflex Hyposecretion
        
        Riley Day Syndrome
        
        Parkinson’s Disease
        
        7th nerve Damage
  - - - Chronic Posterior Blepharitis
      - Rosacea
    - - Facial nerve Palsy
      - Severe Proptosis
      - Symblepharon
- - - - Normal 15 - 35 Second
      - < 10 seconds ➡️ Unstable Tear Film
  - - - Normal 15 mm or above / 5 min
      - Mild to Moderate Dry Eye 5 - 10 mm
      - Severe Dry eye < 5mm *
  - - - C Pattern ➡️ Fine punctate stain in Interpalebral Area ➡️ Mild Dry Eye
      - B Pattern ➡️ Extensive Staining ➡️ Moderate dry eye
      - A Pattern ➡️ Confluent Staining Of Conjunctiva & Cornea ➡️ Severe Dry Eye