Electron microscopy in the understanding of lacrimal drainage system

Evaluation of lacrimal drainage system by radionuclide dacryoscintigraphy in patients with epiphora

Introduction: This study was done to determine the site of obstruction in lacrimal drainage system in Asian patients suffering from epiphora and to determine the transit time taken for the tracer material to reach the lacrimal sac and the nasal cavity. Methods:Dacryoscintigraphy was performed using radionuclide technetium-99m pertechnetate (99m...

Electron Microscopy of Fowl Pox Virus

Examination of Lung Parenchyma by Electron Microscopy

In this paper many of the principal struc­ture of the Moral Lung were studied with the help of Electron Microscopy. Detailed descrip­tion was given of Granular Pneumocytes, Membranous Pneumocytes, Macrophages, and Alveolar Capillaries. A discussion followed on the form and function of Granular Pneumo­cytes.  Acknowledgements  I am grateful to the Reza Shah Pahlavi Foundation for its generou...

Lacrimal scintigraphy. III. Physiological aspects of lacrimal drainage.

Lacrimal scintigraphy (LS) was performed on asymptomatic lacrimal drainage systems and the results were evaluated to understand the physiology of lacrimal drainage. It was found that a physiological obstruction can exist at the level of the nasolacrimal duct in normal asymptomatic individuals, and it is suggested that this obstruction is due to the resistance offered by the valve of Hasner, whi...

Topical antiglaucoma medications and lacrimal drainage system obstruction.

PURPOSE To evaluate the effect of topical antiglaucoma medications on the lacrimal drainage system. METHODS In a prospective controlled blind observational case series, 627 eyes of 384 patients (219 males, 165 females) were screened. Data recording (demographics and history taking), allocation in case (on topical antiglaucoma medications) and control (no glaucoma) groups, and examinations (ey...