From July of 1959 to July of 1960, there are a number of reports on mass screening for glaucoma. In the United States there is an over-all incidence of 2%171 with arteriosclerosis a common accompaniment. In the Netherlands, in 1,000 patients checked with routine tonometry, a 2.3% incidence is found after age 40.69 Routine tonometry is suggested in all cases with any chronic disease. In a survey of the general population of apparently healthy individuals, office and factory workers, Leydhecker139 found a percentage of glaucoma in 1.47%. These individuals varied in age from 6 to 70 years. The frequency over age 40 was 2.31%. Definite glaucoma occurred in 0.43% of the men in the 20-29 age group, which would seem to indicate that not all of these cases are due to sclerotic changes. Heredity was found in 8.2% of the glaucomas and 4.3% of the suspects.
McGARRY HI. Glaucoma, 1959-1960. Arch Ophthalmol. 1960;64(6):951-971. doi:10.1001/archopht.1960.01840010953021