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Is my smartphone better than your theatre camera?

Session Details

Session Title: Ocular pathologies and training and innovation

Session Date/Time: Monday 07/10/2013 | 08:00-10:00

Paper Time: 08:00

Venue: Emerald (First Floor)

First Author: : M.Bhogal UK

Co Author(s): :    J. Low-Beer               Sellem

Abstract Details


To determine if the video quality achieved using a smartphone to record cataract surgery is comparable to that obtained using dedicated theatre cameras.


Moorfields Eye Hospital


An iPhone 4S was coupled to an operating microscope using an afocal adapter ( Simultaneous recording of the same procedure was done using 3 systems, the iPhone, a sony high definition camera and the standard definition camera built into the zeiss microscope. The video footage was shown to 20 ophthalmologists ranging from junior resident to consultant who were asked to grade video clarity, contrast, depth of focus and overall quality on likert scale of 1-10. They were then asked to state whether they though the additional ability to record sound simultaneously was of benefit. Results were analyzed using a paired t test


The iPhone/ system scored higher than the standard definition system in all categories (p<0.01). The was no difference between the sony HD camera and the iPhone/ system in terms of clarity or overall quality but the iPhone/ system scored higher in contrast and depth of focus. All respondents felt the ability to record simultaneous sound was either useful of very useful


Using a smartphone to record anterior segment surgery produces videos that are better than those captured using a standard definition camera system and as good as those of a high definition system. The ability to record sound offers an added advantage.

Financial Interest:

... gains financially from product or procedure presented

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