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 Table of Contents  
INNOVATION
Year : 2016  |  Volume : 28  |  Issue : 1  |  Page : 53-55

Initial experience with DIYretCAM – A do it yourself retinal camera


Dr. NSD Raju's Eye Hospital and Research Centre, Kochi, Kerala, India

Date of Web Publication11-Nov-2016

Correspondence Address:
NSD Raju
Dr. NSD Raju's Eye Hospital and Research Centre, Kochi - 682 019, Kerala
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0976-6677.193876

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  Abstract 


Smartphone based fundus photography may have a role in teleophthalmology. In this article, we discuss our initial experience with DIYretCAM, a do it yourself smartphone retinal camera attachment, that is a cost-effective alternative to conventional fundus camera.

Keywords: Retinal imaging; smartphone fundus camera; teleophthalmology.


How to cite this article:
Raju B, Raju N. Initial experience with DIYretCAM – A do it yourself retinal camera. Kerala J Ophthalmol 2016;28:53-5

How to cite this URL:
Raju B, Raju N. Initial experience with DIYretCAM – A do it yourself retinal camera. Kerala J Ophthalmol [serial online] 2016 [cited 2019 Jan 16];28:53-5. Available from: http://www.kjophthal.com/text.asp?2016/28/1/53/193876



Fundus photography plays an important role in the documentation and follow-up of retinal diseases. In this era of high speed communication using mobile devices, a smartphone-based imaging device may be useful in teleophthalmology and in documenting retinal changes at a peripheral centre. A cost-effective device can empower ophthalmologists all over the world to document changes in the fundus and to effectively consult with peers over secured cross platform messaging services such as WhatsApp.[1] This article intends to give a very brief description of the capabilities of such a device.

The device consists of a smartphone back cover, an optical tube onto which the 20 D lens is fixed [Figure 1], and an optional slit lamp mount. As the device has been made with the “DIY” concept, commonly available materials were used [in peer review, Indian Journal of Ophthalmology since Feb 2016]. In addition to documenting central retinal changes, this device has been found to be extremely useful in documenting the peripheral retinal changes up to the pars plana [Figure 2]. Another area where this device could be useful is to document retinal changes in retinopathy of prematurity [Figure 3].
Figure 1: The DIYretCAM

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Figure 2: (a) Stereo pair of giant dentate process; (b) horse tears over the area of scleral depression

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Figure 3: Fundus photograph showing stage 2 ROP and popcorn lesions (arrows) in Zone II

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The device can be mounted on the slit lamp to give more control, and thus better focus of the retina while imaging the disc and posterior pole [Figure 4]. Using matched filters, fluorescein angioscopy of the central as well as peripheral retina can be performed with this device [Figure 5].
Figure 4: (a) DIYretCAM as a slit lamp mounted device; (b) fundus photograph showing a macular star

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Figure 5: (a) Fluorescein angiography (FA) showing straightening of retinal vessels in a case of familial exudative vitreoretinopathy (FEVR); (b) FA of the far periphery (captured with simultaneous scleral depression) showing avascular retina with peripheral retinal vascular abnormalities

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The advantages of this device are its low cost, portability, and multimodal setup (slit lamp mounted as well as hand held). In addition, there are advantages that are specific to the mobile technology that smartphone-based fundus devices have, especially connectivity options such as Wi-Fi and 4G, that allow transmission of images for teleophthalmological consultation. Smartphone cameras have also improved over the years and they can capture high-resolution pictures even in low light conditions. This device can also be used to capture anterior segment photographs of reasonably good quality [Figure 6]. The image can be edited on the phone itself using the Adobe Photoshop Express app. Montage of multiple fundus photographs [Figure 7] can also be created on the phone using PicsArt app, thus negating the need for a computer for image editing and transmission.
Figure 6: Anterior segment photograph taken with the DIYretCAM showing a progressive pterygium

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Figure 7: Montage fundus photograph showing Wet AMD with partially dehemoglobinized submacular hemorrhage

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The technique has a learning curve. Having a specific camera app that supports a database to store the images and patient information helps to improve the archiving of the images on the phone. Camera FV-5 for android and Camera Pro for the iPhone are good camera apps with multiple features which are useful for fundus photography.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.

 
  References Top

1.
Raju B, Raju N. Regarding fundus imaging with a mobile phone: A review of techniques. Indian J Ophthalmol 2015;63:170-1.  Back to cited text no. 1
[PUBMED]  Medknow Journal  


    Figures

  [Figure 1], [Figure 2], [Figure 3], [Figure 4], [Figure 5], [Figure 6], [Figure 7]



 

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