-
1945.
Optic nerve diseases
Subjects
Neuroophthalmology
-
1946.
Optical coherence tomography
Subjects
Tomography
-
1947.
Optical illusions
Subjects
Hallucinations and illusionsPhysiological opticsVisual perception
-
1948.
Optometry
Subjects
-
1949.
Oral cancer
Subjects
-
1950.
Oral contraceptives
Subjects
Contraceptives
-
1951.
Oral hygiene
Subjects
Hygiene
-
1952.
Oral manifestations of general diseases
Subjects
Mouth diseasesSymptoms
-
1953.
Oral medication
Subjects
Administration of drugs
-
1954.
Oral medicine
Subjects
Medicine
-
1955.
Oral microbiology
Subjects
Medical microbiology
-
1956.
Oral mucosa
Subjects
MouthMucous membrane
-
1957.
Oral surgery
Subjects
Maxillofacial surgery
-
1958.
Organ donors
Subjects
Persons
-
1959.
Organogenesis
Subjects
Morphogenesis
-
1960.
Organotherapy
Subjects
Alternative medicine
-
1961.
Organs (Anatomy)
Subjects
Anatomy
-
1962.
Orgasm
Subjects
Sexual intercourse
-
1963.
Oriental medicine
Subjects
Alternative medicine
-
1964.
Orientation (Physiology)
Subjects
InstinctPhysiologyOrientationSenses
-
1965.
Orofacial pain
Subjects
PainMouth diseases
-
1966.
Orphan drugs
Subjects
Drugs
-
1967.
Orthodontic appliances
Subjects
Dental instruments and apparatusOrthodontics
-
1968.
Orthodontics
Subjects
Dentistry
Last updated dated: 21/02/2026