Final answer:
The best face protection is approved goggles, designed to offer full coverage and protect against ultraviolet radiation and hazards from various angles. Sunglasses and homemade filters do not offer the necessary protection for the eyes in high-risk situations.
Step-by-step explanation:
The best face protection option among those listed is approved goggles. These are specifically designed to provide full coverage and protect the eyes from various hazards, including ultraviolet radiation. Approved goggles are more effective than ordinary sunglasses, which may not block all UV light and don't protect against hazards from different angles.
While a shatter-resistant face shield can offer protection, it is usually used in conjunction with goggles for complete eye safety. A windshield, typically found in automobiles, offers protection against objects while driving but isn't suitable for individual eye protection in most work or leisure scenarios. Furthermore, many safety standards highlight the use of approved protective eyewear when engaging in activities that could pose a risk to the eyes. Ordinary sunglasses and homemade filters are not sufficient to protect the eyes from direct sunlight or other intense light sources.