

ORIGINAL ARTICLE Year : 2016 | Volume : 64 | Issue : 9 | Page : 663-667

Do it yourself smartphone fundus camera – DIYretCAM



Biju Raju1, N S D Raju2, John Davis Akkara3, Avinash Pathengay4

1 Department of Vitreoretinal Diseases, Vasan Eye Care Hospital in Association with Ranjini Eye Hospital, Kochi, India

2 Department of Cataract and Anterior Segment Surgeries, Vasan Eye Care Hospital in Association with Ranjini Eye Hospital, Kochi, India

3 Department of Glaucoma, Westend Eye Hospital, Kochi, India

4 Department of Vitreoretinal Diseases, L V Prasad Eye Institute, Visakhapatnam, Andhra Pradesh, India



Date of Submission 13-Feb-2016 Date of Acceptance 03-Aug-2016 Date of Web Publication 17-Nov-2016

Correspondence Address:

Dr. Biju Raju

Vasan Eye Care Hospital in Association with Ranjini Eye Hospital, Near Powerhouse, Vyttila, Kochi - 682 019, Kerala

India

Source of Support: None, Conflict of Interest: None Check

DOI: 10.4103/0301-4738.194325



Abstract

This article describes the method to make a do it yourself smartphone-based fundus camera which can image the central retina as well as the peripheral retina up to the pars plana. It is a cost-effective alternative to the fundus camera.

Keywords: Fundus camera, fundus photography, mobile phone fundus camera, retinal imaging, smartphone

How to cite this article:

Raju B, Raju N, Akkara JD, Pathengay A. Do it yourself smartphone fundus camera – DIYretCAM. Indian J Ophthalmol 2016;64:663-7

How to cite this URL:

Raju B, Raju N, Akkara JD, Pathengay A. Do it yourself smartphone fundus camera – DIYretCAM. Indian J Ophthalmol [serial online] 2016 [cited 2020 Sep 24];64:663-7. Available from: http://www.ijo.in/text.asp?2016/64/9/663/194325

Table 1: Materials required



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Figure 1: Materials required for the do it yourself smartphone fundus camera



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Assembling the Do it Yourself Smartphone Fundus Camera

Figure 2: The reducer glued to the back cover



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Figure 3: Sandpapers used to reduce the dazzle



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Figure 4: (a) The optical tube camouflaged with insulation tape. To fit the 20 D, few more rounds are applied to increase the thickness (arrow). (b) The condensing lens fixed on the optical tube. (c) The handheld device is ready to use



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Assembling the Slit Lamp Mount

Figure 5: Slit lamp mount. (a) The nut, bolt, and washer in place. (b) Reducer is fixed. (c) 40 mm pipe fixed. (d) Optical tube holder. (e) Assembled mount. (f) Bolt placed in the slot. (g) The do it yourself smartphone fundus camera on the slit lamp



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Using the Do it Yourself Smartphone Fundus Camera

Figure 6: (a) The do it yourself smartphone fundus camera used as a hand held the device. (b) The do it yourself smartphone fundus camera can be held at the condensing lens and supported with the other hand on the camera. (c) Like in indirect ophthalmoscopy, scleral depression is done after stabilizing the do it yourself smartphone fundus camera



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Figure 7: Stereo pair showing pars plana cysts



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Figure 8: Editing the images. (a) The images opened in Photo Express. (b) The image cropped, rotated to correct orientation. (c) Improve the contrast, brightness, etc., (d) The blemish removal tool is used to remove the reflections (e) After removing the reflections. (f) The circle black mask is applied



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Table 2: Cost of DIYretCAM



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Figure 9: Stereo pair taken with the do it yourself smartphone fundus camera shows a recurrent retinal detachment with macular hole. Note the bullous detachment inferonasally



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Figure 10: Stereo pair of a Zone II Stage 3 retinopathy of prematurity showing popcorn lesions. The mount of the scleral depressor is clearly made out in stereo



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Figure 11: Do it yourself smartphone fundus camera fluorescein angiography. (a) Preinjection photo with only the barrier filter, showing dense asteroid hyalosis. (b) The mid-phase fundus fluorescein angiography showing capillary nonperfusion, macular ischemia and neovascularization on the disc suggestive of neovascular branch retinal vein occlusion with macular ischemia



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Figure 12: Anterior segment photographs taken with the do it yourself smartphone fundus camera. (a) Vascular pterygium (b) wrinkling of the posterior capsule in a pseudophakic eye



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References

1.

[ PUBMED ] Raju B, Raju NS. Regarding fundus imaging with a mobile phone: A review of techniques. Indian J Ophthalmol 2015;63:170-1. 2.

Suto S, Hiraoka T, Oshika T. Fluorescein fundus angiography with smartphone. Retina 2014;34:203-5.

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