Epiphora and the bony naso-lacrimal canal.
نویسندگان
چکیده
IT is possible to obtain a radiographic view of the naso-lacrimal canal "end-on" by directing a beam of x-rays down the axis of the canal to a film held horizontally in the mouth: the centre of the film is placed near the site of the first molar tooth (Brunetti, 1930; Kopylow, 1930; Toth, 1933), or the second pre-molar. Examples of such radiographs are shown in Figs 1, 2, and 3. The present investigation has been undertaken to compare the sizes of the bony canals thus observed in a series of normal subjects with those in a series of patients with epiphora.
منابع مشابه
Diameter of the bony lacrimal canal: normal values and values related to nasolacrimal duct obstruction: assessment with CT.
BACKGROUND AND PURPOSE Epiphora, or tearing due to primary acquired nasolacrimal duct obstruction (PANDO), is increasingly being treated with balloon dilatation. The cause of PANDO is unknown, but a small diameter of the bony nasolacrimal canal might be one of the etiologic factors. The purpose of this study was to determine the normal distribution of diameters of the bony canal and to ascertai...
متن کاملAnatomic malformations in the lacrimal duct or bony lacrimal canal Dacryocystolithiasis Recurrent episodes of active dacryocystitis Sarcoidosis
1. A mucocele of the lacrimal sac, or 2. Chronic dacryocystitis or conjunctivitis due to lacrimal sac obstruction, or 3. Congenital nasolacrimal duct obstruction that cannot be cured by probing (members should be over 1 year of age), or 4. Epiphora (excessive tearing) due to acquired obstruction within the nasolacrimal sac and duct, or 5. Lacrimal sac infection that must be relieved before intr...
متن کاملA study of clinico Pathological Correlation of Naso lacrimal duct obstruction
Objective: To study the age and the sex distribution among the primary and secondarily acquired Nasolacrimal duct obstruction . Methods: we conducted a prospective observational study among randomly selected 100 patients presented with epiphora to ENT department during 2year period ie; from march 2013-march 2015. After confirming presence of Nasolacrimal duct obstruction (NLDO) by opthalmologic...
متن کاملEvaluation 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...
متن کاملOne-flap Dacryocystorhinostomy.
DACRYOCYSTORHINOSTOMY, the operation of choice in chronic dacryocystitis, is performed in almost all cases in this clinic by a special technique. Toti (1904) first described the drainage of the lacrimal sac by removal of the bony wall. Kuhnt (1914) stitched the nasal mucosa to the periosteum. Ohn (1920) first sutured the nasal mucosa to the sac. The operation was modified by Dupuy-Dutemps and B...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- The British journal of ophthalmology
دوره 40 11 شماره
صفحات -
تاریخ انتشار 1956