DIURNAL CHANGE IN AMPLITUDE OF ACCOMODATION IN ADULTS
Abstract
Objective: To find out the diurnal changes of amplitude of accommodation in adults.
Method: This descriptive type cross sectional study was conducted on one hundred and ten patients (110) in the eye department of Mayo hospital Lahore from November 2014 to December 2014. The patients were selected by using non-probability convenient sampling technique. Amplitude of accommodation was measured on same subjects in morning and evening by push up method.
Result: Out of 110 subjects 8.33% (9) were from 18 to 19 years. 8.33% (9) were 28 to 29 years old. 6.48% (7) were 26 to 27 years, 12.04% (13) were 24 to 25 years, 28.70% (27) were 22 to 23 years, and 36.11% (35) were 20 to 21 years old. Morning amplitude of accommodation was 6 to 7.9D in 21.30% (20) subjects, 8 to 9.9D in 37.96% (36), 10 to 11.9% (11) in 39.81% (40) and 12 to 13D in 0.93% (1) subjects. Evening amplitude of accommodation was 6 to 7D in 34.26% (33) subjects. It was 8 to 9D in 43.52% (43) and 10 to 11D in 22.22% subjects. There was significant difference between morning and evening amplitude of accommodation as p<0.005.
CONCLUSION: There was significant difference between morning and evening amplitude of accommodation. Amplitude of accommodation was decreased in the evening as compared to morning.
KEY WORDS: Diurnal changes. Amplitude of accommodation.
References
Abraham LM, Kuriakose T, Sivanandam V, Venkatesan N, Thomas R, Muliyil J. Amplitude of accommodation and its relation to refractive errors. Indian journal of ophthalmology. 2005 Jun;53(2):105-8. PubMed PMID: 15976465.
Yavas GF, Ozturk F, Kusbeci T, Inan UU, Kaplan U, Ermis SS. Evaluation of the change in accommodation amplitude in subjects with pseudoexfoliation. Eye. 2009 Apr;23(4):822-6. PubMed PMID: 18497833.
Ciuffreda K. Accommodation and its anomalies. Vision and visual dysfunction. 1991;1:231-79.
Abraham LM, Kuriakose T, Sivanandam V, Venkatesan N, Thomas R, Muliyil J. Correlation between ocular parameters and amplitude of accommodation. Indian journal of ophthalmology. 2010;58(6):483.
Ciuffreda K. in Benjamin WJ (ed). Borish’s Clinical Refraction. W.B.Saunders Company, Philadelphia, 1998:106-107
Kurtev AD, Stoimenova B, Georgiev ME. Diurnal variations in tonic accommodation. Investigative ophthalmology & visual science. 1990;31(11):2456-8
Abraham LM, Kuriakose T, Sivanandam V, Venkatesan N, Thomas R, Muliyil J. Correlation between ocular parameters and amplitude of accommodation. Indian journal of ophthalmology. 2010 Nov-Dec;58(6):483-5. PubMed PMID: 20952831. Pubmed Central PMCID: 2993977.
ΠατÎÏας Ε. Measurement of the eye accommodation range in young people with different daily habits. e-Journal of Science & Technology. 2012;7(2).
Ovenseri-Ogbomo GO, Kudjawu EP, Kio FE, Abu EK. Investigation of amplitude of accommodation among Ghanaian school children. Clinical & experimental optometry : journal of the Australian Optometrical Association. 2012 Mar;95(2):187-91. PubMed PMID: 22260310.
Atchison DA, Capper Ej. MCCabe KL. Critical subjective measurement of amplitude of accommodation. Optom Vis Sci. 1994;71(11):699-706
Downloads
Published
Issue
Section
License
OWNERSHIP OF COPYRIGHT
The copyright in this website and the material on this website (including without limitation the text, computer code, artwork, photographs, images, music, audio material, video material and audio-visual material on this website) is owned by OPHTHALMOLOGY PAKISTAN.
Â
COPYRIGHT LICENSE
OPHTHALMOLOGY PAKISTAN grants to you a worldwide non-exclusive royalty-free revocable license to:
a) view this website and the material on this website on a computer or mobile device via a web browser;
b) copy and store this website and the material on this website in your web browser cache memory; and
c) print pages from this website for your use.
d) OPHTHALMOLOGY PAKISTAN permits all published articles to be copied, redistributed, remixed, transmitted and the work be adapted provided the original work and source is appropriately cited.
OPHTHALMOLOGY PAKISTAN does not grant any other rights in relation to this website or the material on this website. In other words, all other rights are reserved.
For the avoidance of doubt, you must not adapt, edit, change, transform, publish, republish, distribute, redistribute, broadcast, rebroadcast or show or play in public this website or the material on this website (in any form or media) without appropriately and conspicuously citing the original work and source or OPHTHALMOLOGY PAKISTAN prior written permission.
Â
PERMISSIONS
You may request permission to use the copyright materials on this website by writing to chiefeditor@ophthalmologypakistan.com.
Â
ENFORCEMENT OF COPYRIGHT
OPHTHALMOLOGY PAKISTAN takes the protection of its copyright very seriously.
If OPHTHALMOLOGY PAKISTAN discovers that you have used its copyright materials in contravention of the license above, OPHTHALMOLOGY PAKISTAN may bring legal proceedings against you seeking monetary damages and an injunction to stop you using those materials. You could also be ordered to pay legal costs.
If you become aware of any use of OPHTHALMOLOGY PAKISTAN' copyright materials that contravenes or may contravene the license above, please report this by email to chiefeditor@ophthalmologypakistan.com.
Infringing material
If you become aware of any material on the website that you believe infringes your or any other person's copyright, please report this by email to chiefeditor@ophthalmologypakistan.com.
