Drug Installation and Eye Irrigation

Picture sequence of Drop Instillation

Picture sequence of Irrigation Procedure

Dilating Agents

I.    Drug Installation

  A.    Purpose:  To deliver saline or drug solutions to the eye

  B.    Categories:
    i.    Saline / Ocular lubricants  (White or clear caps)
      a.    Saline
      b.    Artificial Tears
      c.    CL wetting solutions
    ii.   Anesthetics  (White or clear caps)
      a.    Proparacaine HCL  (Ophthaine)
      b.    Benoxinate (Fluress)
      c.    Tetracaine
    iii.  Mydriatics  (Red caps)
      a.    Mydriacyl (Tropicamide)
      b.    Phenylephrine HCL (Neosynephrine)
    iv.   Cycloplegics  (Red caps)
      a.    Cyclogel
      b.    Atropine
    v.    Miotics (Green caps)
      a.    Pilocarpine
      b.    Isoflurophate
      c.    Echothiophate ("irreversible" miosis)
    vi.   Others:  Antibiotics, Anti-glaucoma  
                  (Yellow and other colors) 

  C.    Delivery systems:
    i.    Solutions
    ii.   Suspensions:  Shake well before using
    iii.  Ointments:  1/2  to 1 inch strip in lower cul-de-sac 
      a.    Twist tube at end of procedure to interrupt ointment flow 
      b.    Pull upper lid over lower lid to avoid expulsion of ointment
    iv.   BE SURE TO CHECK EXPIRATION DATE PRIOR TO USING ON THE EYE 
    v.    BE SURE TO ASK ABOUT PATIENT ADVERSE REACTIONS TO OTHER OR 
          SIMILAR DRUGS

  D.    Instructions:
    i.    Warn patient that drop may "sting" or "smart" briefly 
      a.    Anesthetic use will reduce effect of drugs that follow
      b.    NOTE:  In office, refrigeration of bottle prior to use will
                   reduce patient "sting" response (sting due to acidic pH) 
                   as well as help  preserve the solution from decomposing 
                   faster.
    ii.   Tell patient length of action of the drug
      a.    Anesthetic:  Effect immediate -- lasts about 10 minutes
      b.    Mydriatics & Cycloplegics:  Effects in 15-30 minutes 
                                        -- lasts 2-4 hours
      c.    Ointments:  Blurry or Filmy vision  
                        (usually used at bedtime)
    iii.  Tell patient how often solutions should be used and how much 

  E.    Techniques:
    i.    Wash your hands prior to touching patient
    ii.   Instruct patient to look up as well a tilt head back
      a.    Do not let patient watch the tip come close to eye
      b.    DO NOT let patient watch drop as it falls toward the eye
    iii.  Tug on lower lid to expose cul-de-sac
      a.    Two hand technique
      b.    One hand technique
      c.    Alternative technique
        1.    Have patient look down toward floor -- May be preferred 
              technique for the patient as they cannot see drop comming.
        2.    Drop placed on upper bulbar conjunctiva to flow over 
              cornea 
    iv.   Maintain tip of bottle 1/2 to 1 inch above lash path
      a.    DO NOT PLACE TIP OF BOTTLE BELOW LASH PATH AT ANY TIME
      b.    Hold upper lid if necessary
      c.    DO NOT CONTAMINATE BOTTLE
        1.    Do not touch lashes, brow, skin or hair with tip of 
              bottle 
        2.    Do not touch patient with cap of bottle held in hand 
    v.    Squeeze bottle to deliver one drop to area (not on cheek)
    vi.   Occlude puncta if necessary for absorption for 30 to 60 seconds 
    vii.  Alternative to punctal occlusion:  
            Close eyes for 30 to 60 seconds - may be desired technique to
            keep patient from contaminating area with fingers.
    viii. Dropping Children (technique when not cooperative)
      a.    Have parent hold hands
      b.    Use TWO HANDED technique
      c.    Trap head if necessary with arms extended (raised)
      d.    REASSURE child AT ALL TIMES  
            (Crying tends to dilute actions)
      e.    Alternative technique:  Spray Bottle deliver systems 
    ix.   DO NOT ALLOW
      a.    Patient to blot most of solution out of eye with tissue
            Note:  Drop size = 20 ul   -----   Cul-de-sac = 7 ul
                   Most of solution will run out of the eye onto cheek.
      b.    Patient to rub eye after anesthetic instillation
            (Topical anesthetic tends to soften the corneal ephthelium)

II.   Pledget drug delivery

  A.    Purpose: To place drug in specific region of the eye

  B.    Example:  Punctal anesthesia
    i.    Break cotton stick to about 1 inch length
    ii.   Soak cotton with anesthetic
    iii.  Patient to look up and away from nasal punctum
    iv.   Place cotton along lid margin of slightly exposed puncta 
    v.    Have patient close lids along length of cotton
    vi.   DO NOT LET CORNEA RUB AGAINST Q-TIP

III.  Patient Drop Self-installation

  A.    Patient is to wash hands prior to starting procedure

  B.    Align using mirror

  C.    Place drops into lower cul-de-sac

  D.    Alternative technique
    i.    Look to side into mirror and drop solution onto nasal or 
          temporal conjunctiva

  E.    Advise patient to cool solution prior to use as the eye is 
        sensitive to temperature

IV.   Eye Irrigation

  A.    Purpose:
    i.    To remove unwanted particles (foreign bodies) from the eye
    ii.   To dilute effect of alien solution or material in the 
          anterior orbit
    iii.  To flush area of excessive dye

  B.    Preparation
    i.    Patient tilts head back
    ii.   Fold tissue and have patient form trough below orbit on 
          cheek 

  C.    Procedure
    i.    Patient looks up while stream of fluid is directed to lower 
          conjunctiva
      a.    Move lower lash back and forth to flush entire area
    ii.   Patient looks down while stream of fluid is directed to 
          upper conjunctiva
      a.    Move upper lash back and forth to flush entire area
      b.    Move upper lash up and down to flush underneath upper lid 
    iii.  Perform irrigation for minimum of 5 changes of direction 
          or 5 seconds
    iv.   Perform multiple irrigations if needed
    v.    DO NOT
      a.    Use excessive force in delivering stream of fluid to eye
      b.    Direct stream of fluid directly onto cornea 
            (exception:  FB removal)
    vi.   Allow patient to dry surrounding adnexa when finished

  D.    If insufficient flush or patient relief, repeat procedure