There is a special place for glasses. The glasses we wear in our daily life are generally composed of glass, metal frames and metal screws. Glass and metal, which are common in daily life, are contraband in detention places such as detention centers.

When the suspect is sent to the detention center for custody, the correctional police will conduct personal safety inspection to prevent contraband from being brought into the detention center. One part of the safety inspection is to temporarily detain glasses made of glass and metal.

Even in many cases, before being sent to the detention center, the suspects were "disarmed" and took off their belts, shoes, glasses and watches.

Therefore, almost all suspects failed to wear glasses when they entered the detention center. Legal basis: Article 11 of the Regulations on Detention Facilities. When detaining a detainee in a detention center, the person and belongings of the detainee shall be inspected. Non-daily necessities and cash of detainees are registered by the detention center and kept in a unified way. The contraband and other articles related to the case found in the inspection shall be handed over to the detention decision organ for handling according to law. The physical examination of female detainees shall be conducted by the female people's police.

Article 11 When detaining a detainee in a detention center, the Regulations on Detention Center shall inspect the person and the articles carried by the detainee. Non-daily necessities and cash of detainees are registered by the detention center and kept in a unified way. The contraband and other articles related to the case found in the inspection shall be handed over to the detention decision organ for handling according to law. The physical examination of female detainees shall be conducted by the female people's police.