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. 2014 Feb 7;9(2):e88306. doi: 10.1371/journal.pone.0088306

Table 4. Type of occupation by visual difficulty status.

Occupation None, Mild, or Moderate Visual Difficulty Severe or Extreme Visual Difficulty
Column % Column %
Legislator, Senior Official, or Manager 1.62 1.11
Professional (engineer, doctor, teacher, clergy, etc.) 9.99 7.62
Technician or Associate Professional (inspector, finance dealer, etc.) 4.84 2.20
Clerk (secretary, cashier, etc.) 5.33 2.83
Service or sales worker (cook, travel guide, shop salesperson, etc.) 13.63 11.15
Agricultural or fishery worker (vegetable grower, livestock producer, etc.) 32.73 43.90
Craft or trades worker (carpenter, painter, jewelry worker, butcher, etc.) 11.24 9.94
Plant/machine operator or assembler (equipment assembler, sewing-machineoperator, driver, etc.) 8.18 4.84
Elementary worker (street food vendor, shoe cleaner, etc.) 11.28 15.41
Armed forces (government military) 1.17 1.00