Author/Authors :
Yazdani, Negareh Department of Optometry - School of Paramedical Sciences - Mashhad University of Medical Sciences, Mashhad, Iran , Azimi Khorasani, Abbas Department of Optometry - School of Paramedical Sciences - Mashhad University of Medical Sciences, Mashhad, Iran , Mirhajian Moghadam, Hanieh Department of Optometry - School of Paramedical Sciences - Mashhad University of Medical Sciences, Mashhad, Iran , Yekta, Abbas Ali Noor Research Center for Ophthalmic Epidemiology - Noor Eye Hospital, Tehran, Iran , Ostadimoghaddam, Hadi Department of Optometry - School of Paramedical Sciences - Mashhad University of Medical Sciences, Mashhad, Iran , Heravian Shandiz, Javad Department of Optometry - School of Paramedical Sciences - Mashhad University of Medical Sciences, Mashhad, Iran
Abstract :
Purpose: To compare three different methods for determining addition in presbyopes.
Methods: The study included 81 subjects with presbyopia who aged 40‑70 years. Reading addition values
were measured using 3 approaches including the amplitude of accommodation (AA), dynamic retinoscopy
(DR), and increasing plus lens (IPL).
Results: IPL overestimated reading addition relative to other methods. Mean near addition obtained by
AA, DR and IPL were 1.31, 1.68 and 1.77, respectively. Our results showed that IPL method could provide
20/20 vision at near in the majority of presbyopic subjects (63.4%).
Conclusion: The results were approximately the same for 3 methods and provided comparable final
addition; however, mean near additions were higher with increasing plus lens compared with the other
two methods. In presbyopic individuals, increasing plus lens is recommended as the least time‑consuming
method with the range of ±0.50 diopter at the 40 cm working distance.
Keywords :
Amplitude of Accommodation , Dynamic Retinoscopy , Increasing Plus Lens , Presbyopia
