The categories answer different questions: protective eyewear reduce exposure to a defined hazard such as impact, particles, splash, dust, or optical radiation when the protector is correctly rated, shaped, fitted, maintained, and compatible with other equipment; reading glasses add plus optical power for a chosen near working distance, helping compensate for age-related loss of focusing ability.
The comparison is governed by different mechanisms. For protective eyewear, examine hazard assessment and protection rating; for reading glasses, examine plus power and working distance. Feature lists become useful after the decision has a concrete goal.