Optimal correction in spectacles: intervention effects on eyestrain and musculoskeletal discomfort among postal workers.

Abstract

BACKGROUND:

The static posture of postal workers when sorting mail can lead to musculoskeletal discomfort. Research has shown a connection between eyestrain and upper-body musculoskeletal discomfort in general, including postal workers. A previous study of postal workers found that most of those with eye strain were in need of a new correction in their existing spectacles.

OBJECTIVE:

Evaluate intervention effects on eyestrain and musculoskeletal discomfort with new spectacles for postal workers.

METHODS:

Postal workers subjectively reported eyestrain, musculoskeletal discomfort and their opinions of the visual environment via questionnaires pre- and post-intervention. After an eye examination the postal workers were divided into two groups: those who needed new spectacles and those who did not.

RESULTS:

Those who needed new spectacles showed a higher prevalence of eyestrain and musculoskeletal discomfort pre-intervention. Post-intervention, the postal workers rated their vision better and the average eyestrain and musculoskeletal discomfort decreased for both groups. These workers also experienced a decrease in discomfort on the left (static) side of the neck while sorting mail.

CONCLUSION:

An intervention providing the optimal correction reduces eyestrain and decreases musculoskeletal discomfort, especially from the neck.

• Authors: H Hemphälä, P Nylén, J Eklund
• Journal: Work (Reading, Mass.) (Work) Vol. 47 Issue 3 Pg. 329-37 (Jan 01 2014) ISSN: 1875-9270 [Electronic] Netherlands
• PMID: 24284670 (Publication Type: Clinical Trial, Journal Article, Research Support, Non-U.S. Gov't)

Topics

• Adult
• Asthenopia (prevention & control)
• Eyeglasses
• Female
• Humans
• Male
• Middle Aged
• Musculoskeletal Pain (prevention & control)
• Occupational Diseases (prevention & control)
• Postal Service
• Posture
• Vision Disorders (therapy)