1. Variability of expert observers in evaluating the optic disc;Lichter;Trans Am Ophthalmol Soc,1976
2. Biometric study of the disc cup in open-angle glaucoma;Betz;Graefes Arch Clin Exp Ophthalmol,1982
3. Neuroretinal rim area in early glaucoma;Airaksinen;Am J Ophthalmol,1985
4. Optic disc changes in ocular hypertension;Schwartz;Surv Ophthalmol,1980
5. Videographic measurements of optic nerve topography in glaucoma;Caprioli;Invest Ophthalmol Vis Sci,1988