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Morphological and histological changes in eye lens: Possible application for estimating postmortem interval.
Legal Medicine 2015 November
Establishing the postmortem interval is a very complex problem in Forensic Science despite the existence of several macro- and microscopic methods. In the case of ocular methods, most are based on an evaluation of the biochemical components of the vitreous humour 24-36h after death, but, to our knowledge, there are no studies on the relationship between lens and the postmortem interval. Since the lens is protected between the vitreous humour and the aqueous humour inside the eyeball, postmortem changes are assumed to start later in the lens. To evaluate the usefulness of using the lens to establish the postmortem interval, we examined 80 rabbit lens enucleated 24, 48, 72 and 96h after death, assessing changes in sphericity and absorbance at different wavelengths and any histological alterations. Both sphericity and absorbance were seen to decrease to a statistically significant extent, and there was a gradual loss of structure and organisation of the lens components as a function of the postmortem interval. Modifications in the lens were seen to be useful for determining the postmortem interval between 24 and 96h.
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