RT Journal A1 Tenner AS T1 A lacrimal needle and punctum dilator combined JF Journal of the American Medical Association JO Journal of the American Medical Association YR 1924 FD July 5 VO 83 IS 1 SP 41 OP 41 DO 10.1001/jama.1924.26610010002015a UL http://dx.doi.org/10.1001/jama.1924.26610010002015a AB I have used this needle for the last two months with such satisfaction that it has seemed to me worthy of publication of its merits.It has a small, solid tip with a lateral fenestration 1.5 mm. back of the tip.It is conical, increasing in diameter from about 22 gage at the tip to about 17 gage at the base. It is without any curve, and is about 2 cm. long.The material is sterling silver and is not affected by silver salts or iodin.The hub has the regular standard Luer slip and can be used, therefore, with a Luer syringe of any size. It is advantageous, however, to use a well made syringe of domestic manufacture, such as a B-D Luer, for the reason that the imported syringes fit poorly, resulting either in leakage or in the needle's flying off during pressure.The advantage of the small