Ophthalmology in China ›› 2023, Vol. 32 ›› Issue (1): 55-57.doi: 10.13281/j.cnki.issn.1004-4469.2023.01.010

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Measurement of the distance between lacrimal sac and axillary plane of middle turbinate in patients with chronic dacryocystitis based on CT lacrimal duct radiography

Liu Xin1,2, Mo Ya3   

  1. 1 Aier Eye Hospital (East of Chengdu), Chengdu 610051, China; 2 Chengdu University of Traditional Chinese Medicine, Chengdu 610072, China; 3 Department of Ophthalmology,  Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, China

  • Received:2021-11-22 Online:2023-01-25 Published:2023-02-04
  • Contact: Mo Ya, Email: myydcg@163.com

Abstract:  Objective To measure the distance from the top and bottom of the lacrimal sac(LS) to the middle turbinate axillary plane (MTAP) on computed tomographic dacryocystography (CT-DCG ) to clarify the relative positional relationship between LS and MTAP in patients with chronic dacryocystitis(CD). Design experimental study. Participants CT lacrimal angiography images of 191 patients (216 eyes) with CD in the Affiliated Hospital of Chengdu University of Traditional Chinese Medicine. Methods CT-DCG was performed in the patients. CT post-processing technology was used to carry out three-dimensional reconstruction of CT images, and to measure the distance from the top and bottom of the LS to the MTAP on the CT image. Main Outcome Measures The distance from the top and bottom of the LS to the MTAP. Results 153 cases (173 eyes) in all 191 patients (216 eyes) with CD are females. There is statistically significant difference in the distance between the top and the bottom of the LS to the MTAP in patients both in different genders and in different diseased eyes (P<0.05). There is no statistically significant difference in the 20-year-old age group (P>0.05), and the other age groups are statistically significant (P<0.05). The distance from the bottom to the LS to the MTAP is larger than that from the top of the LS to the MTAP. There is statistically significant difference in the bottom distance between the 41-60-year-old group and the 61-80-year-old group (P=0.003). The distance from the bottom of the LS to the MTAP is larger in the patients aged 61-80 years than that in patients aged 61-80 years. There is no significant difference both the top distance and the bottom distance of the other groups (P>0.05). Conclusions The distance from the bottom of the LS to the MTAP is larger than that from the top of the LS to the MTAP in patients with CD. Most of the LS are located below the MTAP. (Ophthalmol CHN, 2023, 32: 55-57)


Key words:  chronic dacryocystitis, computed tomographic dacryocystography; , the middle turbinate axilla plane