Premium
Age‐related changes in accommodation measured with a double‐pass system
Author(s) -
Aldaba Mikel,
Vilaseca Meritxell,
Arjona Montserrat,
Pujol Jaume
Publication year - 2013
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1111/opo.12038
Subject(s) - accommodation , stimulus (psychology) , ophthalmology , medicine , population , audiology , optometry , psychology , optics , physics , environmental health , psychotherapist
Purpose To measure the accommodative response in a wide age range population using the retinal image quality assessments provided by a double‐pass system. Methods The accommodative response was measured using a custom‐built double‐pass setup in 84 patients from 15 to 55 years of age. Patients were classified in four groups ( A : 15–25 year old; B : 26–35; C : 36–45; D : 46–55). Accommodation was stimulated from 0 to 5 dioptres ( D ) with the push up method using an open field fixation test. The total accommodative response in the stimulated range, the accommodative stimulus‐response curve, the slope and the progression of optical quality with accommodation were measured. Results The total accommodation obtained in groups A and B was high, with a mean value of 4 D or higher, whereas values in older individuals were significantly lower. The accommodative stimulus‐response curve and the slope were also high with a sudden decrease in patients over 35 years of age. The optical quality of the eye during accommodation did not change significantly. Conclusions Participants aged 15–35 years showed a good accommodative response. Thereafter, a significant decrease of the response in the total accommodation, stimulus response curve and slope was observed. The younger groups showed a larger accommodative response than previously published.