17.11.2024
Reading time:
8 mins

VC (Cataract Surgery Preliminary Investigation) Guideline ONO

Cataract surgery is a planned procedure with a major impact on the quality of life. Exact preoperative planning is crucial for optimal results. Front office, optician/optometris and ophthalmologist work together on an interdisciplinary basis to optimize preoperative planning.

Dr. Valery Vinzent Wittwer

front office

Appointment for preliminary cataract surgery examination

  • If possible, appointment with a planned surgeon
  • Appointment with slot with optician
  • Give consent (EV cataract surgery)
  • Send the family doctor form and accompanying letter for the family doctor to the family doctor
    • Should be completed by us 1 week before the planned operation
  • directions
    • Contact lens abstinence (1 week soft KL, 2 weeks hard KL)
    • Moisturize the eye intensively 2 weeks before the examination with Lacrinorm Fluid/Optava/Lacrycon AT 4x/day
    • May not drive after the preliminary examination (due to mydriasis)

optician/optometrist

Biometric measurements, general clarification and information regarding self-payment benefits

  • Biometry (Pentacam ALX and IOL Master), possibly ultrasound biometry
  • autorefraction (AR), air tonometry
    • Blendvisus in patients < 50 years
  • Refraction < 2 months
  • OCT macular disc and photos
  • endothelial cell measurement
    • If < 2000 Zellen/mm2 > femtosecond laser recommends assisted cataract surgery, use HPMC 2% (note below cave in procedure)
  • Guiding eye (motor, sensory and anamnestic)
  • Monovision testing with test glasses (+1.5 addition for non-leading eye and then also for leading eye testing for far and near)
  • Explain surgery and potential risks and complications
  • Explain self-paying packages and make a recommendation
  • Slit lamp photo if it cannot be ruled out that a toric IOL is being used
  • Arrange surgery appointments
    • 1. Non-guide eye (eye with poor visual acuity if explicitly requested by the patient)
    • 2nd guide eye
    • Priority for choosing the OP slot depends on the package: Diamond > Gold > Silver > Bronce > no self-payment services
  • Slit lamp photo with toric IOLs
    • The patient's head should be vertical, the entire limbus should be sharply imaged
    • Integrate 365° degree grid (software)
  • IOL determination in accordance with ONO Guideline
    • Without package/bronze package -> by optician (approved by chief physician: JH, FH) or senior physician in continuing education ophthalmic surgery (as soon as approved by chief physician: JB, Cossa, ES, EL, GA, RG)
    • silver/gold/diamond package -> by surgeon
  • Enter IOL strength in cataract statistics and order
  • If possible, schedule follow-up checks with the referrer or at branch offices
  • Submit an invoice and ask that we receive the payment before the operation
  • Print out an appointment confirmation and drop it off with medication

ophthalmologist

Analyzing measurements, planning the operation and answering questions regarding surgery and anesthesia

  • Anamnesis (usually prepared by an optician, only completed)
    • Subjective complaints
    • systemic anamnesis (medical history sheet)
  • Ophthalmic examination
    • Slit lamp, fundus copy including peripheral retina
    • Topography (cave: irregular astigmatism -> contraindication for multifocal/toric IOL)
    • OCT (cave: macular edema, retinal gliosis, RnFL defects -> further clarification or treatment before cataract surgery)
    • endothelial cells (cave: Fuchs endothelial dystrophy -> precautionary measures during cataract surgery)
    • Biometry (cave: unequal axis lengths usually only with amblyopia otherwise measurement errors are possible)
    • Check the indication
      • increase in intraocular pressure due to cataract (phacomorphic glaucoma)
      • Visual acuity reduction due to catarket < 0.8, or subjectively disruptive
      • Blinding caused by cataract (cortical turbidity)
      • Progressive myopization
      • Wish for freedom from glasses
        • Increased risk of amotio p.o. (usually with axle length > 26 mm)
    • Document other eye diseases (e.g. retinal foramen, macular edema), complete the diagnosis list
  • Briefly explain to the patient individually about the type of anesthesia, operation (including type of operation, target refraction) and prognosis and document them using keywords
  • Edit the consent form visibly (paint or add notes) and sign
  • If necessary, answer questions from the patient
  • Determine IOL and complete entry in medical records
    • Text module “vc”
      • S: Anamnesis (medications and allergies)
      • B: findings (cave: cataract grading)
      • D/B: Update the daily list
      • P: Procedural
        • Defining the package
        • Determine IOL
        • Family doctor form not required if < 70J or < ASA II
        • General practitioner form required if > 70 J or > ASA II
          • Can't lie flat
          • shortness of breath (COPD, asthma)
          • Demez
          • angina pectoris, heart disease
          • hemiplegia < 1 year, neurodegenerative disease (Parkinson, Alzheimer's)
          • multiple drugs
          • Current tumours

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