RESEARCH ARTICLE


Experience Using the Heidelberg Retina Angiograph 2 with a Wide-Field Contact Lens System in Diabetic Retinopathy Cases



Miyo Shiibashi2, Miwako Yoshimoto1, Takashi Shigeeda2, Shigehiko Kitano 3, Satoshi Kato*, 2
1 Tokyo Teishin Hospital, Japan
2 Department of Ophthalmology and Visual Sciences, University of Tokyo, Japan
3 Tokyo Woman’s Medical University Diabetic Center, Japan


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© Shiibashi et al.; Licensee Bentham Open.

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the Department of Ophthalmology, University of Tokyo Graduate School of Medicine, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan; Tel: +81-3-3815-5411, Ext. 33494; Fax: +81-3-3817-0798; E-mail: katou-s@ka2.so-net.ne.jp


Abstract

Introduction:

HRA (Heiderberg Retina Angiograph) 2 uses a confocal scanning laser system which can provide high quality digital images but its imaging field is only 30°at most. HRA2 with a wide-field contact lens system allows an imaging field of up to 150°.

Methods:

We examined the advantages and disadvantages of HRA2, with a wide-field contact lens, for the evaluating diabetic retinopathy (DR).

Results:

HRA2 was beneficial for obtaining images of the entire retina simultaneously, without missing peripheral retinal non-perfusion and neovascularization. On the other hand, clear images connot be acquired in cases with media opacities such as corneal dystrophy, cataract and asteroid hyalosis, or in those with yellow tinted IOL.

Conclusions:

HRA2 with a wide-field contact lens is useful for visualizing peripheral retinal lesions in DR cases.

Keywords: : Heidelberg retina angiograph 2, wide-field contact lens, diabetic retinopathy.