The Double 15-Hue Test was designed to classify the types of congenital defective color vision as protan, deutan and tritan, and also to estimate its extent as strong(grade 3), medium(grade 2) and mild (grade 1) defects. This is a paired dichotomous test: Test A and B. Test A is a modified Farnsworth's Panel D-15 Test for separating the subject with strong defect from those with medium and mild defects, while Test B composing more desaturated color chips is used to separate the subject with mild defect from those with strong and medium defects. The test was evaluated with 72 color defective students detected at two high schools using Ishihara's and the author's pseudoisochromatic plates, and it was proved to be very helpful for qualitative and quantitative diagnosis of defective color vision.
Color Vision ; Congenital Abnormalities ; Diagnosis ; Humans

One hundred eighty-five male high school students of the University of the Philippines were tested with the Ishihara's Pseudoisochromatic plates and Farnsworth-Munsell 100 Hue test (FM 100).One hundred seventy-one passed both tests.Five failed the Ishihara but passed the FM 100.Five passed the Ishihara but turned out to be blue-yellow deficient by the FM 100 test.Four failed both test all of which were identified as having red-green color deficiency.The Ishihara test is a highly sensitive test useful for jobs requiring identification of red-green colors.After testing with the Ishihara, failures can be required to undergo testing with the FM 100 to remove false positives.The FM test can be utilized for jobs requiring identification of colors in the whole color spectrum and in detecting blue-yellow deficiencies,The test can also be used for color normals in jobs requiring a superior degree of hue discrimination.
Human ; Male ; Adolescent ; CONGENITAL COLOR VISION

Three hundred patients who have congenital colour vision deficiencies were examined at the author's eye clinic for 3 years (1987-1990) using 5 types of colour vision tests: Hahn's, TMC's, Okuma's (new), H-R-R's colour vision tests and Double 15 Hue Test (Hahn). The results obtained from each test were quite different in type and grade, and the summarized results were considered to be the best: Type: protan 23.3%, deutan 76.0%, unclassified 0.7% Grade: mild 20.3%, medium 25.3%, strong 54.4% The frequency of coincidence both in type and grade between the summarized results and those of each test were compared, and the highest was 62.3% in Double 15 Hue Test. The efficiency of the author's colour vision test and Double 15 Hue Test were evaluated with the data in this clinical trial, and they were found to be useful for classifying the type and estimating the grade of the congenital and also acquired colour vision deficiencies.
Adolescent ; Adult ; Child ; Color Perception Tests ; Color Vision Defects/*congenital/diagnosis ; Evaluation Studies as Topic ; Female ; Humans ; Male ; Middle Aged

PURPOSE: To evaluate a customized, portable Farnsworth-Munsell 100 (FM 100) hue viewing booth for compliance with colour vision testing standards and to compare it with room illumination in subjects with normal colour vision (trichromats), subjects with acquired colour vision defects (secondary to diabetes mellitus), and subjects with congenital colour vision defects (dichromats). METHODS: Discrete wavelengths of the tube in the customized booth were measured using a spectrometer using the normal incident method and were compared with the spectral distribution of sunlight. Forty-eight subjects were recruited for the study and were divided into 3 groups: Group 1, Normal Trichromats (30 eyes); Group 2, Congenital Colour Vision Defects (16 eyes); and Group 3, Diabetes Mellitus (20 eyes). The FM 100 hue test performance was compared using two illumination conditions, booth illumination and room illumination. RESULTS: Total error scores of the classical method in Group 2 as mean+/-SD for room and booth illumination was 243.05+/-85.96 and 149.85+/-54.50 respectively (p=0.0001). Group 2 demonstrated lesser correlation (r=0.50, 0.55), lesser reliability (Cronbach's alpha, 0.625, 0.662) and greater variability (Bland & Altman value, 10.5) in total error scores for the classical method and the moment of inertia method between the two illumination conditions when compared to the other two groups. CONCLUSIONS: The customized booth demonstrated illumination meeting CIE standards. The total error scores were overestimated by the classical and moment of inertia methods in all groups for room illumination compared with booth illumination, however overestimation was more significant in the diabetes group.
Adolescent ; Adult ; Color Perception Tests/*instrumentation/*methods/standards ; Color Vision Defects/congenital/*diagnosis/etiology ; Diabetes Complications ; Equipment Design ; Humans ; *Lighting ; Middle Aged ; Young Adult

Adrenoleukodystrophy ; genetics ; therapy ; Animals ; Color Vision Defects ; genetics ; therapy ; Dependovirus ; Gene Transfer Techniques ; Genetic Therapy ; ethics ; trends ; Hematopoietic Stem Cell Transplantation ; Humans ; Leber Congenital Amaurosis ; genetics ; therapy ; Lentivirus

Preemployment health examination, stipulated by the Occupational Safety and Health Regulations, plays an important role in workers' health management. Recently, employers are getting more aware of the importance of screening recruits before employment to decrease the development of occupational disorders and work loss due to health problems. Accordingly, additional test items are being included and selection criteria for preemployment health examination is getting more strict. However, studies and. data on preemployment health examination are scarce until now. Authors reviewed preemployment health certificates of 3,261 recruits issued by a university hospital in Pohang from January 3 to December 31, 1993, analyzed regulations on preemployment health examination of 16 companies in the Pohang area, and surveyed 80 health and safety personnel with questionnaire to evaluate the present status of preemployment health examination. Of 3,261 recruits 125 (3.8 %) failed to recruit. Main causes of. failure were chronic liver disease, tuberculosis of undetermined activity. The regulations of 16 companies on preemployment health examination were reviewed. Most companies adopted additional test items in addition to basic test items listed on the Regulation; test of physical strength, pulmonary function test, pure tone audiometer (2000 Hz and 4000 Hz in addition to 1000 Hz), exercise provocation test, urine erythrocyte and urobilinogen, complete blood count, stool examination, VDRL, arid sputum examination for acid fast bacilli In most companies, obesity, hearing disturbance, color vision disturbance was included in the selection criteria. Hepatitis B carrier was not accepted in 4 companies, accepted conditionally in 2, and accepted in 5 companies. Of 80 health and safety personnel of companies in the Pohang area, 56 (70. 0 %) perceived preemployment health examination as a tool for selection of recruits and 14(17.5%) as a procedure for job fitting. Most of them were against the acceptance of recruits with hepatitis B carrier, lumbar spine deformity, and hearing disturbance. In conclusion, preemployment health examination is performed mainly for the purpose of selection of healthier employee, but test items and selection creteria is not seem to be adequate. Authors suggest that further studies are needed to select the test items for specific job, and application of selection criteria be restricted only to some specified jobs. Consecutive filling of preemployment health examination to the periodic health examination was also suggested.
Blood Cell Count ; Color Vision ; Congenital Abnormalities ; Employment ; Erythrocytes ; Gyeongsangbuk-do ; Hearing ; Hepatitis B ; Liver Diseases ; Mass Screening ; Obesity ; Occupational Health ; Patient Selection ; Questionnaires ; Respiratory Function Tests ; Social Control, Formal ; Spine ; Sputum ; Tuberculosis ; Urobilinogen

Kallmann's syndrome is a rare condition, and this is defined as hypogonadotropic hypogonadism and anosmia or hyposmia. The syndrome may be associated with cleft lip, cleft palate, color blindness, skeletal abnormalities, renal agenesis, sensory neural hearing loss, obesity, etc. About 10 cases of Kallmann's syndrome have been reported in Korea, but there are no reports on cases of Kallmann's syndrome with atrophy of the frontal lobe, severe mental retardation and unilateral renal agenesis. We experienced a case of 17-year-old boy with abnormalities of the olfactory system, as was noted on magnetic resonance imaging (MRI). He had an atrophy of the frontal lobe, mental retardation, a micropenis and unilateral renal agenesis. Hormonal assay documented low levels of luteinizing hormone (LH), follicle stimulating hormone (FSH), testosterone and thyroid-stimulating hormone (TSH). So, we report here on an unusual case of Kallmann's syndrome along with briefly reviewing the relevant medical literature.
Adolescent ; Atrophy ; Cleft Lip ; Cleft Palate ; Color Vision Defects ; Congenital Abnormalities ; Follicle Stimulating Hormone ; Frontal Lobe ; Genital Diseases, Male ; Hearing Loss ; Humans ; Hypogonadism ; Intellectual Disability ; Kallmann Syndrome ; Kidney ; Kidney Diseases ; Korea ; Luteinizing Hormone ; Magnetic Resonance Imaging ; Obesity ; Olfaction Disorders ; Penis ; Testosterone ; Thyrotropin