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Early onset of presbyopia
American Journal of Optometry and Physiological Optics
|December 1, 1982
Summary
Early-onset presbyopia affects over a third of individuals by age 38. Environmental factors like high temperatures, UV radiation, poor nutrition, and hair dye exposure may contribute to this condition.
Area of Science:
- Ophthalmology
- Environmental Health
Background:
- Presbyopia, the age-related loss of near focusing ability, typically affects individuals later in life.
- A significant proportion of the studied population experienced presbyopia onset earlier than expected.
Purpose of the Study:
- To investigate the prevalence of early-onset presbyopia.
- To identify potential environmental risk factors associated with the premature development of presbyopia.
Main Methods:
- Retrospective analysis of 800 patients diagnosed with presbyopia.
- Data collection on age of presbyopia onset, geographic location (rural vs. urban), and environmental exposures.
Main Results:
- 286 out of 800 (35.75%) participants developed presbyopia by age 38.
- A higher percentage of early-onset presbyopia cases were observed in individuals residing in rural areas (63%) compared to urban areas (37%).
- Potential contributing environmental factors identified include high average temperatures, significant ultraviolet radiation exposure, chronic essential amino acid deficiency, and exposure to toxins like hair dye.
Conclusions:
- Environmental factors may play a crucial role in the early onset of presbyopia.
- Further research is warranted to elucidate the specific mechanisms linking environmental exposures to premature presbyopia development.