Why were the suspect's eyes difficult to identify?

The difficulty in identifying the suspect's eyes stems from the presence of glasses. When someone is wearing glasses, particularly if they have tinted lenses or a significant prescription, this can obscure the natural appearance of the eyes. Reflections and glare on the lenses can further hinder visibility, making it challenging to discern specific characteristics of the eyes that might be relevant for identification purposes.

In contrast, other factors such as hair covering the eyes, the suspect looking down, or swelling of the eyes do impact visibility or recognition, but they do not provide the same barrier to clear identification as glasses do in terms of obscuring eye features and facial recognition. In this context, glasses serve as a significant impediment to identification efforts, particularly in situations where visual confirmation of a suspect's identity is critical.