Abstract
Purpose
The purpose of this study is to compare the lesion detection rates of ocular toxocariasis (OT) between ultra-wide-field scanning laser ophthalmoscopy (UWF-SLO) and conventional fundus photography (CFP), and to evaluate the potential diagnostic ability of UWF-SLO in OT.
Methods
A total of 56 patients with serological/immunological confirmed unilateral OT were enrolled. The presence of OT characteristic features included the posterior granuloma (postG), peripheral granuloma (periG), tractional retinal detachment (TRD), retinal folds (RF), and vitreous strands (VS) and was analyzed in 36 patients with UWF-SLO and 56 patients with CFP. Diagnostic tests were employed using the clinical examination as gold standard.
Results
In total of the 56 OT eyes, granulomas were identified in 91.1% (51/56) of eyes, including postG in 46.4% (26/56) of eyes, periG in 41.1% (23/56) of eyes, and combined granulomas in 3.6% (2/56) of eyes. TRD, RF, and VS were found in 28.6% (16/56), 51.8% (29/56), and 83.9% (47/56) of patients, respectively. Although the specificities of the diagnosis in clinical features were similar by the diagnostic tests, the sensitivities of postG, periG, TRD, RF, and VS using UWF-SLO were 100%, 100%, 66.7%, 95%, and 81.8%, respectively, which were significantly higher those of CFP (72.2%, 31.3%, 11.1%, 55%, and 48.5%). Additionally, the extent of vitreous haze was milder graded by UWF-SLO compared to CFP (p = 0.0099).
Conclusions
The diagnostic ability of UWF-SLO was superior to CFP using clinical examination as gold standard for the ascertainment of the characteristic manifestations of OT, especially for granulomas and RF.
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Acknowledgements
The authors thank all patients who participated in this study.
Funding
Supported in part by grants from the Fundamental Research Funds of State Key Laboratory of Ophthalmology, research funds of Sun Yat-sen University (15ykjc22d; Guangzhou, Guangdong, China) (18zxxt73; Guangzhou, Guangdong, China), Science and technology program Guangdong, China (2016A020215096; Guangzhou, Guangdong, China) (2018A030310230; Guangzhou, Guangdong, China), and the grant from the National Natural Science Foundation of China (31800873). The sponsors and funding organizations had no role in the design or conduct of this research.
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Li, S., Sun, L., Liu, C. et al. Clinical features of ocular toxocariasis: a comparison between ultra-wide-field and conventional camera imaging. Eye 35, 2855–2863 (2021). https://doi.org/10.1038/s41433-020-01332-w
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DOI: https://doi.org/10.1038/s41433-020-01332-w
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