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Don’t give up your eyesight

Dean Ross Published on 15 March 2011

One of the most common injuries in the workplace is an eye injury. It is estimated that over 2,000 people in the U.S. injure their eyes at work each day. The majority of these injuries result from small particles or slivers impacting or abrading the eye (See

Of these injuries, 90 percent could have been reduced in severity or avoided altogether through the use of proper eye protection (Also see



While we often take our eyesight for granted, in reality it is one of our most precious assets. (Try this experiment today: Cover one eye with gauze and tape and attempt to work as you would normally for 30 or 40 minutes.

It is a guaranteed “eye- opener”). Yet many farm managers do not encourage or mandate the use of eye protection as a part of daily employment practices.

There are several reasons for this, no doubt, some reasonable and some selfish. Perhaps the time has come to think about adding eye protection as part of your own work wear and then encourage others on the farm to follow. It is a relatively simple and inexpensive precaution compared with the potential for loss.

But the question remains, what types of eye protection are appropriate for agricultural work? Eye protection devices come in different forms such as goggles, face shields and safety glasses. Each is unique and meets different requirements.

Safety glasses
The most common cause of eye injury results from flying debris. In agricultural use, eye protection would be useful in almost any situation, from mixing feed to working around harvesting equipment or working in the shop.


The simplest first precaution for this is a pair of safety glasses. Safety glasses come in a variety of sizes, shapes, colors and prices. The objective of safety glasses in particular is to stop or deflect those particles before they can impact the eye.

Safety eyewear should be marked by the manufacturer with “ANSI Z87.” This indicates the eyewear meets requirements set by the National Standards Institute for impact resistance.

Prescription eyeglass wearers should be sure to either use safety glasses which incorporate prescription lenses or safety eyewear that fit over their own glasses (See ).

Though most modern prescription eyewear do have impact-resistant lenses, they are not constructed appropriately to meet the ANSI standards for impact as a unit, and can fail if struck by debris.

Safety glasses provide forward impact protection; however, they may not provide lateral protection. If lateral protection is required, side shields may be necessary. These can come as part of the safety glasses or they can be added.

When adding or selecting glasses with side shields, be sure they do not interfere with peripheral vision. Safety glasses designed to be worn over prescription glasses may be obtained with or without side shields.


Goggles are designed to fit snugly around the eyes. They provide protection from all angles and can be a relatively cost-effective way to add protection to your eyes. Keep in mind that some goggles are ANSI Z87 rated and some are not.

Be sure to determine if the pair you are considering meet this standard. Many goggles are designed to be worn over prescription eyewear. Many, too, are coated with an anti-fog solution.

Goggles are available in vented and unvented or splash variations. The unvented or splash variations are designed to protect against liquids or chemical vapors (For more details, visit ).

Be sure the goggles you choose meet the needs of that particular work situation. Some pesticide or chemical use situations call for a full-face respirator for complete protection.

Face shields
Face shields are intended to supplement safety glasses or goggles. These protective devices protect against heat, glare, splashing, dust and flying debris. They are considered secondary protection and are not usually ANSI Z87 certified against impact (Also see ).

A face shield should always be used when grinding or striking metal with a hammer.

Special considerations
Eye protection is also important when arc welding. Because the eye can be permanently damaged by the brilliance of the welding arc, the eye should always be protected when welding. In most cases, a welding helmet is best to use because it combines face protection, eye protection and head protection in one package.

It is recommended that the welding mask be fitted with a number “10” lens when welding at 200 amperes or less. Check your welder’s manual for more information on the lens requirements for the type of welding you are doing. (Also see ).

Finally, ultraviolet radiation has not only been shown as a causative factor in skin cancer, it also has been shown to cause damage to the eye. To help prevent such damage, sunglasses or appropriately tinted safety glasses should be worn when working outdoors.

The current U.S. standard for sunglasses is ANSI Z80.3-2001, which includes three transmittance categories. According to the ANSI Z80.3-2001 standard, the lens should have a UVB (280 to 315 nm) transmittance of no more than 1 percent and a UVA (315 to 380 nm) transmittance of no more than 0.3 times the visual light transmittance ( ).

When purchasing sunglasses or tinted safety glasses, be sure they are marked as meeting the ANZI standard Z80. PD

References omitted due to space but are available upon request to .

—Excerpts from Michigan Dairy Review, Vol. 16, No. 1, pages 21-22.

Dean Ross
Extension Dairy Educator
Michigan State University