Accommodative changes produced in response to overnight orthokeratology



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Felipe Márquez, Gema and Nombela Palomo, María and Cacho, Isabel and Nieto Bona, Amelia (2015) Accommodative changes produced in response to overnight orthokeratology. Graefe's Archive for Clinical and Experimental Ophthalmology, 253 (4). pp. 619-626. ISSN 0721-832X

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To evaluate short-term (3 months) and long-term (3 years) accommodative changes produced by overnight orthokeratology (OK).
A prospective, longitudinal study on young adult subjects with low to moderate myopia was carried out. A total of 93 patients took part in the study. Out of these, 72 were enrolled into the short-term follow-up: 21 were on a control group, 26 on a Paragon CRT contact lenses group, and 25 on a Seefree contact lenses group. The other 21 patients were old CRT wearers on long-term follow-up. Accommodative function was assessed by means of negative and positive relative accommodation (NRA / PRA), monocular accommodative amplitude (MAA), accommodative lag, and monocular accommodative facility (MAF). These values were compared among the three short-term groups at the follow-up visit. The long- and short-term follow-up data was compared among the CRT groups.
Subjective accommodative results did not suffer any statistically significant changes in any of the accommodative tests for any of the short-term groups when compared to baseline. There were no statistically significant differences between the three short-term groups at the follow-up visit. When comparing the short- and long-term groups, only the NRA showed a significant difference (p = 0.0006) among all the accommodation tests.
OK does not induce changes in the ocular accommodative function for either short-term or long-term periods.

Item Type:Article
Uncontrolled Keywords:Orthokeratology; Accommodative function; Accommodative amplitude; Myopia; Contact lenses
Subjects:Medical sciences > Medicine > Ophtalmology
Medical sciences > Optics > Optometry
ID Code:40651
Deposited On:10 Jan 2017 12:28
Last Modified:10 Jan 2017 12:28

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