Yildirim Yildiray, Salihoglu Murat, Kar Taner, Altundag Aytug, Tekeli Hakan, Kaya Abdullah, Cayonu Melih, Unal Melih
*Department of Ophthalmology and †Department of Otolaryngology, GATA Haydarpasa Training Hospital; ‡Division of Otolaryngology, Istanbul Surgery Hospital; §Department of Neurology, GATA Haydarpasa Training Hospital, Istanbul, Turkey; and ║Department of Otolaryngology, Amasya University Training and Research Hospital, Amasya, Turkey.
Ophthalmic Plast Reconstr Surg. 2015 Mar-Apr;31(2):94-7. doi: 10.1097/IOP.0000000000000199.
Transcanalicular diode laser dacryocystorhinostomy (TCL-DCR) is used much in recent years for the surgery of nasolacrimal duct obstruction (NLDO). Although TCL-DCR is accepted to be minimally invasive, safe, and effective, there is no report focusing on postoperative changes in olfactory function after this procedure. Hence, the aim of this current study was to investigate the changes in olfactory function after TCL-DCR procedure.
This study was carried out in 42 volunteers (16 men and 26 women) between the ages of 20 and 81 years. All participants received detailed lateralized olfactory tests preoperatively and at the postoperative first week, first month, third month, and sixth month. After lateralized olfactory tests were performed, the results were grouped according to the side of the nasal passage where the operation was performed for NLDO: the nonoperated side served as the control.
The current investigation produced 2 major findings: (1) olfactory function decreased significantly after TCL-DCR procedure at the operated side of the nose compared with the nonoperated side; (2) olfactory abilities of the patients returned to normal within 3 months.
The results of this study showed that transcanalicular diode laser could be used safely in terms of olfactory function for dacryocystorhinostomy. Temporary decrease of olfactory function on the side having TCL-DCR should be taken into account when obtaining informed patient consent.
近年来，经泪小管二极管激光泪囊鼻腔造口术（TCL-DCR）在鼻泪管阻塞（NLDO）手术中应用广泛。尽管TCL-DCR被认为具有微创、安全且有效的特点，但尚无关于该手术后嗅觉功能变化的报道。因此，本研究的目的是探讨TCL-DCR手术后嗅觉功能的变化。
本研究纳入了42名年龄在20至81岁之间的志愿者（16名男性和26名女性）。所有参与者在术前以及术后第一周、第一个月、第三个月和第六个月均接受了详细的单侧嗅觉测试。在进行单侧嗅觉测试后，根据为NLDO手术所涉及的鼻腔侧别对结果进行分组：未手术侧作为对照。
本研究产生了两个主要发现：（1）与未手术侧相比，TCL-DCR手术后手术侧鼻腔的嗅觉功能显著下降；（2）患者的嗅觉能力在3个月内恢复正常。
本研究结果表明，就嗅觉功能而言，经泪小管二极管激光可安全用于泪囊鼻腔造口术。在获得患者知情同意时，应考虑到接受TCL-DCR一侧嗅觉功能的暂时下降。
