Primary open-angle glaucoma is unusual in adolescents and young adults. However, at least 25% of patients who are referred for glaucoma between the ages of 10 and 35 years have primary open-angle glaucoma. These patients may be asymptomatic, and elevated intraocular pressure, often to above 40 mm Hg, glaucomatous cupping of the disc, or field loss are discovered on routine examination or because of a family history of glaucoma. Therefore, all patients old enough to cooperate should have tonometry performed. These patients are similar to those with pigmentary glaucoma in that approximately two thirds are male subjects and a majority have myopic refractive errors. They differ in the degree of pigment dispersion in the anterior chamber.
Goldwyn R, Waltman SR, Becker B. Primary Open-Angle Glaucoma in Adolescents and Young Adults. Arch Ophthalmol. 1970;84(5):579-582. doi:10.1001/archopht.1970.00990040581004