**Core Concept:** Glass workers cataract is a type of cataract that develops due to prolonged exposure to high levels of ultraviolet (UV) radiation, typically from working with glass. The primary cause is UVB radiation, which damages the lens proteins leading to clouding and loss of transparency in the lens, resulting in cataract formation.

**Why the Correct Answer is Right:** Glass workers are exposed to high levels of UV radiation during their work, particularly UVB. This high exposure causes a process called photochemical injury to the lens proteins. The UVB radiation interacts with the proteins, causing cross-linking and altering the protein structure. This results in the formation of a mature cataract that is typically located in the central part of the lens, known as the nuclear cataract.

**Why Each Wrong Option is Incorrect:**

A. UVA radiation: UVA radiation is involved in cataract formation, but it is not the primary cause of glass workers' cataract. UVB radiation is the critical factor leading to the formation of this specific type of cataract.

B. Age-related cataract: Age-related cataract is a result of natural aging processes and not directly related to glass workers' exposure to UV radiation.

C. Injury-related cataract: While injury to the eye can cause a cataract, the question specifies glass workers' cataract due to UV radiation exposure, not injury-related factors.

D. Infection-related cataract: Infection-related cataracts are caused by bacterial, viral, or fungal infections, which are not relevant to glass workers' cataract.

**Clinical Pearl:** Prolonged exposure to UV radiation, particularly UVB, can lead to the development of glass workers' cataract. This type of cataract is characterized by its location in the central part of the lens and is distinct from other forms of cataracts like age-related or injury-related cataracts. It is essential for glass workers to use appropriate eye protection to mitigate the risk of developing this type of cataract.