opinions have varied , and still do , on such matters as to whether or not the diagnosis of glaucoma is contingent upon a field defect , the existence of low tension glaucoma , the ramifications of ocular hypertension , what constitutes a glaucomatous appearance of the disc , field defects versus the appearance of the disc , field defects versus the appearance of the disc , and what constitutes an early glaucomatous field defect .
C0017601
glaucoma
C0028840
ocular hypertension