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A practical approach to slit-lamp smartphone photography

  • Pieter van der Merwe
    Affiliations
    Department of Ophthalmology, Toronto Western Hospital, University Health Network, Toronto, Ont.
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  • Tina Felfeli
    Affiliations
    Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, Ont.

    Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ont.
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  • Efrem D. Mandelcorn
    Correspondence
    Correspondence to Efrem D. Mandelcorn, MD, Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto Western Hospital, University Health Network, 6E-432, 399 Bathurst Street, Toronto, ON M5T 2S8
    Affiliations
    Department of Ophthalmology, Toronto Western Hospital, University Health Network, Toronto, Ont.

    Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, Ont.
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      Several approaches to smartphone anterior segment photography that involve purchasing an adapter to attach to the slit lamp have been described in the literature. Given the frequent updates in sizes and shapes of smartphones, a practical stepwise approach to capturing high-quality images without the need for an adapter is essential. First, the illumination is set to be diffuse, using the slit-lamp integrated diffuser (Fig. 1A, 1B). The camera flash is turned off, and the slit lamp is brought into focus on the anterior segment. The camera is then stabilized with support from the examiner's hand over the top of the oculars while griping the phone between the index finger and palm (Fig. 1C, 1D). The phone is then moved closer or farther away from the slit lamp in order to find the appropriate focal distance. Lastly, the picture is taken with the examiner's free hand by tapping the screen to take the picture (Video 1, available online).
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