Presbyopia
| Presbyopia | |
|---|---|
| Other names | The aging eye condition[1] |
| A person with presbyopia cannot easily read the small print of an ingredients list (top), which appear clearer to someone without presbyopia (bottom). | |
| Medical specialty | Optometry, ophthalmology |
| Symptoms | Difficulty reading small print, having to hold reading material farther away, headaches, eyestrain[1] |
| Usual onset | Progressively worsening in those over 40 years old[1] |
| Causes | Aging-related hardening of the lens of the eye[1] |
| Diagnostic method | Eye exam[1] |
| Treatment | Eyeglasses,[1] contact lenses[2] |
| Frequency | 25% currently;[3] all eventually affected[1] |
Presbyopia is age based hyperopia that sets in usually after the age of 40 years old.
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 "Facts About Presbyopia". National Eye Institute. October 2010. Archived from the original on 4 October 2016. Retrieved 11 September 2016.
- ↑ Pérez-Prados, Roque; Piñero, David P; Pérez-Cambrodí, Rafael J; Madrid-Costa, David (March 2017). "Soft multifocal simultaneous image contact lenses: a review". Clinical and Experimental Optometry. 100 (2): 107–127. doi:10.1111/cxo.12488. PMID 27800638. S2CID 205049139.
- ↑ Fricke, Timothy R.; Tahhan, Nina; Resnikoff, Serge; Papas, Eric; Burnett, Anthea; Ho, Suit May; Naduvilath, Thomas; Naidoo, Kovin S. (October 2018). "Global Prevalence of Presbyopia and Vision Impairment from Uncorrected Presbyopia". Ophthalmology. 125 (10): 1492–1499. doi:10.1016/j.ophtha.2018.04.013. hdl:1959.4/unsworks_79548. PMID 29753495.
We estimate there were 1.8 billion people (prevalence, 25%; 95% confidence interval [CI], 1.7–2.0 billion [23%–27%]) globally with presbyopia in 2015 [...].