Demographic features of idiopathic macular telangiectasia in Japanese patients.
OBJECTIVE
Idiopathic macular telangiectasia (MacTel) is classified into aneurysmal telangiectasia (type 1), perifoveal telangiectasia (type 2) and occlusive telangiectasia (type 3). Most instances of telangiectasia in Western countries are type 2. This study reports clinical and demographic features of MacTel in Japanese patients.


METHODS
Newly diagnosed patients with MacTel were examined retrospectively. All patients underwent fluorescein angiography and optical coherence tomography.


RESULTS
Thirty-four eyes of 27 patients with MacTel were included. Twenty eyes of 20 patients (74.1%) had type 1, ten eyes of five patients (18.5%) had type 2, and four eyes of two patients (7.4%) had type 3. Foveal capillary dilatation and microaneurysms were observed in all except for one eye of early stage type 2 MacTel. Optical coherence tomography revealed cystoid macular edema in type 1, temporal foveal thinning and a loss of boundary between the inner and outer segments of photoreceptors in type 2, and thinning of all retinal layers around the fovea in type 3.


CONCLUSIONS
The most frequent among our patients was aneurysmal MacTel, whereas perifoveal MacTel was not common. Although the clinical characteristics were similar, the most common type was different from that in Western countries.
Department of Ophthalmology, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima, Japan. imaruko@fmu.ac.jp
Ichiro
I
Maruko
Tomohiro
T
Iida
Yukinori
Y
Sugano
Akira
A
Ojima
Hiroshi
H
Oyamada
Tetsuju
T
Sekiryu
D000368:Aged; D000369:Aged, 80 and over; D044466:Asian People / Q000208:ethnology*; D005260:Female; D005451:Fluorescein Angiography; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D058456:Retinal Telangiectasis / Q000175:diagnosis / Q000208:ethnology*; D012189:Retrospective Studies; D041623:Tomography, Optical Coherence