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Simulating the Mechanics of Lens Accommodation via a Manual Lens Stretcher
Published on: February 23, 2018
Effect of cumulative nearwork on accommodative facility and asthenopia
R Iribarren1, A Fornaciari, G K Hung
1Department of Ophthalmology, Centro Médico San Luis, San Martín de Tours 2980, (1425) Capital Federal, Argentina. rafael@ar.inter.net
International Ophthalmology
|April 8, 2003
Summary
Extensive nearwork in young adults is linked to reduced dynamic accommodative ability and increased asthenopic symptoms, such as blurred vision. This suggests a direct impact of prolonged visual tasks on eye function and comfort.
Area of Science:
- Ophthalmology
- Optometry
- Vision Science
Background:
- Prolonged nearwork is a common activity in modern society, particularly among students and young professionals.
- Concerns exist regarding the potential impact of extensive nearwork on visual function and comfort.
Purpose of the Study:
- To quantitatively assess the relationship between long-term cumulative nearwork and dynamic accommodative ability.
- To investigate the association between nearwork, accommodative facility, and asthenopic symptoms in young adults.
Main Methods:
- 87 young adults (18-31 years) with good uncorrected visual acuity participated.
- Measurements included nearwork duration, dynamic accommodative facility, and asthenopic symptom levels.
Main Results:
- Increased cumulative nearwork correlated with reduced accommodative facility and more asthenopic symptoms.
- Nearwork duration was linked to blurred vision, which in turn was associated with decreased accommodative facility.
- Specifically, years spent reading significantly correlated with reduced accommodative facility.
Conclusions:
- A significant relationship exists between the cumulative amount of nearwork and diminished accommodative facility.
- These findings suggest that excessive nearwork may contribute to the development of asthenopia (eye strain) in young adults.
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