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Table 1 Survey interview questionnaire

From: Mismatch of corneal specialists’ expectations and keratoconus knowledge in general ophthalmologists - a prospective observational study in Switzerland

Question 1 What is keratoconus?
Correct answers: - Thinning of the cornea (56 %)
- Irregular astigmatism (68 %)
- Protrusion of the cornea (64 %)
Question 2 Are there risk factors for the occurrence of keratoconus?
Correct answers: - Positive family history (79 %)
- Allergies (48 %)
- Younger age (29 %)
Question 3 What are triggers for the onset of keratoconus?
Correct answers: - Eye rubbing (69 %)
- Puberty (16 %)
- Pregnancy (4 %)
Question 4 What are symptoms of keratoconus?
Correct answers: - Deterioration of vision (short-sightedness, astigmatism) (97 %)
- Double vision (shadow vision) (31 %)
- Light sensitivity (13 %)
Question 5 What are consequences of untreated keratoconus?
Correct answer: - Visual deterioration (86 %)
- Inability to wear glasses (65 %)
- Inability to wear contact lenses (38 %)
- Restriction of current occupation (8 %)
- Need for a corneal transplant (36 %)
Question 6 What are treatment options for keratoconus?
Correct answers: - Glasses (33 %)
- Rigid contact lenses (81 %)
- Corneal cross-linking (100 %)
- Corneal transplant (72 %)
  1. The MKK is computed in the following way. There are six questions for which the minimal correct answers vary between three and five. The total number of correct answers is 21. The MKK of a person is the total number of correct replies times 100 divided by 21. Please note that MKK measures only the minimal knowledge. Additional knowledge that may be important is not measured. Percentage (%) of correct participants’ (n = 100) answers are displayed in parenthesis