Demographic Features of Idiopathic Macular Telangiectasia in Korean Patients

• Published in: Korean journal of ophthalmology Vol. 29; no. 3; pp. 155 - 159
• Main Authors: Kim, Sung Hyun, Oh, Jaeryung, Ahn, Soh-Eun, Park, Choul Yong, Oh, Jong-Hyun
• Format: Journal Article
• Language: English
• Published: Korea (South) The Korean Ophthalmological Society 01.06.2015; 대한안과학회
• Subjects: Adult; Aged; Aged, 80 and over; Female; Humans; Male; Middle Aged; Original; Republic of Korea - epidemiology; Retina - pathology; Retinal Telangiectasis - diagnosis; Retinal Telangiectasis - epidemiology; Retinal Telangiectasis - pathology; Retinal Telangiectasis - physiopathology; Retrospective Studies; 안과학; Idiopathic juxtafoveal retinal telangiectasia; Spectral domain optical coherence tomography; Macular telangiectasia
• ISSN: 1011-8942; 2092-9382; 2092-9382
• DOI: 10.3341/kjo.2015.29.3.155

To investigate the clinical and demographic features of idiopathic macular telangiectasia (MacTel) in Korean patients since the introduction of spectral domain optical coherence tomography (SD-OCT). We reviewed medical records of patients who were diagnosed with MacTel from 2009 to 2013. All patients underwent fluorescein angiography and SD-OCT and were classified as type 1 or type 2 according to the classification system proposed by Yannuzzi. Over a period of 5 years, 4 (18.2%) patients were diagnosed with type 1 MacTel and 18 (81.8%) patients were diagnosed with type 2 MacTel. All patients with type1 MacTel were male, and their mean age was 51 ± 8.6 years. Among patients with type 2 MacTel, 3 (16.7%) were male, 15 (83.3%) were female, and the mean age was 60 ± 13.6 years. Whereas all type 1 MacTel patients had either metamorphopsia or mild scotoma, of the 18 patients with type 2 MacTel, only 4 (22.2%) had those symptoms, 10 (55.6%) complained of only mild visual impairment, and the other 4 (22.2%) had no symptoms. Intraretinal cystoid spaces were observed in 26 (72.2%) of 36 eyes with type 2 MacTel by SD-OCT. These cystoid spaces had irregular boundaries and did not correspond to angiographic leakages. Type 2 MacTel was most common in the present study. The wider availability of SD-OCT may have contributed to the diagnosis of type 2 MacTel. Type 2 MacTel may be more prevalent than type 1 in Koreans, which corresponds to the results of Western countries.