Ralph J. Helmsen

Results of the Prospective Evaluation of Radial Keratotomy (PERK) Study One Year After Surgery

George O. Waring, Michael Lynn, Henry Gelender et al. · Ophthalmology · 1985 · 285 citations

Ophthalmology, Medicine, Perioperative Safety +8

Vitamin A receptors. Retinoic acid binding in ocular tissues

Barbara Wiggert, Donald R. Bergsma, Ralph J. Helmsen et al. · Biochemical Journal · 1978 · 35 citations · Full text

Optogenetics, Ocular Disease, Signal Transduction +14

Retinol receptors in corneal epithelium, stroma and endothelium

Barbara Wiggert, Donald R. Bergsma, Ralph J. Helmsen et al. · Biochimica et Biophysica Acta (BBA) - Protein Structure · 1977 · 34 citations

Ophthalmology, Vascular Biology, Retinol Receptors +3

Immunoelectron microscopic localization of herpes simplex virus antigens in rabbit cornea with antihuman IgG-antiferritin hybrid antibodies.

Joseph F. Metcalf, Ralph J. Helmsen · PubMed · 1977 · 17 citations

Veterinary Vaccine, Immunology, Viral Pathogenesis +18

Ultrastructural localization of herpes simplex virus antigens on rabbit corneal cells using sheep antihuman IgG antihorse ferritin hybrid antibodies.

Donald E. Henson, Ralph J. Helmsen, Karl E. Becker et al. · PubMed · 1974 · 16 citations

Ultrastructural Localization, Veterinary Vaccine, Viral Pathogenesis +7