Shattering the eyeglass: Using Kaitai Structs to dissect the eyeglass’ contents

In my post from 2012: Genesis of a File Format, I created a new file format – the Eyeglass file format. The format provides a mechanism to persist information about a patient’s eye health following a checkup at an opticians. Today in 2023 we can use the format to understand how to make use of Kaitai Structs for understanding file formats.

Given the disclaimer that I am not actually an optician and that the format is purely illustrative, let’s look at the eyeglass again below.

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