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2. Determination of the true size of an object on the fundus of the living eye;Littman;Klinisches Monatsblatter fur Augenheilkunde,1982
3. Measuring fundus landmarks;Mansour;Invest Ophthalmol Vis Sci,1990
4. Interference fringe scale for absolute ocular fundus measurement;Kennedy;Invest Ophthalmol Vis Sci,1983
5. Optic disc, cup, and neuroretinal rim size, configuration and correlations in normal eyes;Jonas;Invest Ophthalmol Vis Sci,1988