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DURING the last ten years official color sense control in Sweden has been well organized; about this we shall give a short account.
The control is divided into two stages: In the first stage any medical practitioner with a normal color sense may perform the examination. The second stage is of a more scientific nature, as the examination is made by ophthalmologists with special training and approved by the board of directors of the Medical Department. The latter stage is concerned with complicated or doubtful cases, and in this stage must also be established the quality and degree of the defect in the color sense.
Naturally all necessary methods will be used in the second stage examinations, i. e. not only different pseudoisochromatic plates, but also spectral apparatus (Nagel, Göthlin) as well as test lanterns (the Eldridge-Green color perception lantern and Kugelberg-Karpe's so-called contrast lantern), etc. Examinations in the first
BOSTRÖM CG, KUGELBERG I. OFFICIAL COLOR SENSE CONTROL IN SWEDEN. Arch Ophthalmol. 1947;38(3):378-380. doi:10.1001/archopht.1947.00900010387011