Current issue
About the Journal
Scientific Council
Editorial Board
Regulatory and archival policy
Code of publishing ethics
Publisher
Information about the processing of personal data in relation to cookies and newsletter subscription
Archive
For Authors
For Reviewers
Contact
Reviewers
Annals reviewers in 2022
Annals reviewers in 2021
Annals reviewers in 2020
Annals reviewers in 2019
Annals reviewers in 2018
Annals reviewers in 2017
Annals reviewers in 2016
Annals reviewers in 2015
Annals reviewers in 2014
Annals reviewers in 2013
Annals reviewers in 2012
Links
Sklep Wydawnictwa SUM
Biblioteka Główna SUM
Śląski Uniwersytet Medyczny w Katowicach
Privacy policy
Accessibility statement
CONVERGENCE ABILITY IN PATIENTS AFTER CATARACT PHACOEMULSIFICATION AND PATIENTS WITH THEIR OWN LENS
1
Students’ Scientific Society, Ophthalmology Clinic and Department of Ophthalmology, School of Medicine in Katowice, Medical University of Silesia in Katowice, Poland
2
Studenci Studenckiego Towarzystwa Naukowe Śląskiego Uniwersytetu Medycznego w Katowicach
Students’ Scientific Society, Ophthalmology Clinic and Department of Ophthalmology, School of Medicine in Katowice, Medical University of Silesia in Katowice, Poland
3
Klinika Okulistyki i Katedry Okulistyki, Uniwersyteckie Centrum Okulistyki i Onkologii Samodzielny Publiczny Szpital Kliniczny, Śląski Uniwersytet Medyczny w Katowicach
Ophthalmology Clinic and Department of Ophthalmology, University Centre of Ophthalmology and Oncology, School of Medicine in Katowice, Medical University of Silesia in Katowice, Poland,
Corresponding author
Marcin Piotr Jaworski
Students’ Scientific Society, Ophthalmology Clinic and Department of Ophthalmology, School of Medicine in Katowice, Medical University of Silesia in Katowice, Poland, Wisniowa 10, 41-500 Chorzow, Polska
Students’ Scientific Society, Ophthalmology Clinic and Department of Ophthalmology, School of Medicine in Katowice, Medical University of Silesia in Katowice, Poland, Wisniowa 10, 41-500 Chorzow, Polska
Ann. Acad. Med. Siles. 2017;71:19–24
KEYWORDS
TOPICS
ABSTRACT
Introduction:
The aim of this study was to determine whether convergence varies with age and pseudophakia.
Material and methods:
86 patients, aged 21–85 (average age: 62.7) years were included in the study group: 39 patients with binocular pseudophakia and 41 with their own lens, as well as 68 people with their own lens, at the age of 19–25 (average 22.1) years. Examinations were carried out at distances of 50 and 10 cm, and for distant vision. Interpupillary distance measurements were used to calculate the difference of convergence capabilities. The examination results of phakic and pseudophakic eyes were compared.
Results:
The mean convergence of the pseudophakic patients was 3.52 mm (± 0.42 mm), in the patients with their own lens: 3.46 (± 0.74 mm). No statistically significant differences between the groups were found. No statistically significant difference was found in the mean convergence between the two groups of patients aged 19–25 (group 1) and over 65 years (group 2), either. The average value of convergence in group 1 was 3.47 mm (3.84–2.93 mm). However, in the second group the values were 3.46 mm (3.96–2.48 mm). There was no evidence of statistical differences in the average value of convergence in both groups for distances of 50 cm and 10 cm.
Conclusions:
Convergence does not depend on age. Presbyopia does not lead to a loss of convergence in phakic or pseudophakic eyes.
The aim of this study was to determine whether convergence varies with age and pseudophakia.
Material and methods:
86 patients, aged 21–85 (average age: 62.7) years were included in the study group: 39 patients with binocular pseudophakia and 41 with their own lens, as well as 68 people with their own lens, at the age of 19–25 (average 22.1) years. Examinations were carried out at distances of 50 and 10 cm, and for distant vision. Interpupillary distance measurements were used to calculate the difference of convergence capabilities. The examination results of phakic and pseudophakic eyes were compared.
Results:
The mean convergence of the pseudophakic patients was 3.52 mm (± 0.42 mm), in the patients with their own lens: 3.46 (± 0.74 mm). No statistically significant differences between the groups were found. No statistically significant difference was found in the mean convergence between the two groups of patients aged 19–25 (group 1) and over 65 years (group 2), either. The average value of convergence in group 1 was 3.47 mm (3.84–2.93 mm). However, in the second group the values were 3.46 mm (3.96–2.48 mm). There was no evidence of statistical differences in the average value of convergence in both groups for distances of 50 cm and 10 cm.
Conclusions:
Convergence does not depend on age. Presbyopia does not lead to a loss of convergence in phakic or pseudophakic eyes.
REFERENCES (16)
1.
Singh V. Visual System. In: Singh V. Textbook of Clinical Neuroanato-my. Elsevier India 2014, 217–218.
2.
Davson H. The muscular mechanisms. In: Davson H. Physiology of the eye. U.S. Academic Press 1980, 383–500.
3.
Kinoshita J.H. Mechanisms initiating cataract formation. Proctor Lecture. Invest. Ophthalmol. Vis. Sci. 1974; 13(10): 713–724.
4.
Gimbel H.V. Divide and conquer nucleofractis phacoemulsification: Development and variations. J. Cataract Refract. Surg. 1991; 17(3): 271–291.
5.
Millodot M. Dictionary of Optometry and Visual Science. Butterworth-Heinemann, New York 2009.
6.
Przekoracka-Krawczyk A., Naskręcki R. Dysfunkcja akomodacji i meto-dy jej badań. Optyka (Nauka). 2010; 6(7): 24–30.
7.
Jadanowski K., Budrewicz S., Koziorowska-Gawron E. Zaburzenia gałkoruchowe w chorobach ośrodkowego układu nerwowego. Pol. Przegl. Neurol. 2010; 6(4): 202–211.
8.
Gamlin P.D. Neural mechanisms for the control of vergence eye movements. Ann. N Y Acad. Sci. 2002; 956: 264–272.
9.
Kozicz T., Bittencourt J.C., May P.J., Reiner A., Gamlin P.D., Palkovits M., Horn A.K., Toledo C.A., Ryabinin A.E. The Edinger-Westphal nucleus: a historical, structural, and functional perspective on a dichotomous terminology. J. Comp. Neurol. 2011; 519(8): 1413–1434.
10.
Schall J.D., Morel A., King D.J., Bullier J. Topography of visual cortex connections with frontal eye field in macaque: convergence and segregation of processing streams. J. Neurosci 1995; 15(6): 4464–4487.
11.
Gamlin P.D., Yoon K. An area for vergence eye movement in primate frontal cortex. Nature 2000; 407(6807): 1003–1007.
12.
Savaki H.E., Gregoriou G.G., Bakola S., Moschovakis A.K. Topography of Visuomotor Parameters in the Frontal and Premotor Eye Fields. Cereb Cortex 2015; 25(9): 3095–3106, doi: 10.1093/cercor/bhu106.
13.
Bruce A.S., Atchison D.A., Bhoola H. Accommodation-convergence relationships and age. Invest. Ophthalmol. Vis. Sci. 1995; 36(2): 406–413.
14.
Scheiman M., Cotter S., Rouse M., Mitchell G.L., Kulp M., Cooper J., Borsting E. Randomised clinical trial of the effectiveness of base-in prism reading glasses versus placebo reading glasses for symptomatic convergence insufficiency in children. Br. J. Ophthalmol. 2005; 89(10): 1318–1323.
15.
Rajska K., Loba P., Broniarczyk-Loba A. The influence of sensory deprivation on binocular vision after bilateral cataract extraction with intraocular lens implantation. Klinika Oczna 2012; 4: 261.
16.
Nemeth G., Lipecz A., Szalai E., Berta A., Modis L. Jr. Accommodation in phakic and pseudophakic eyes measured with subjective and objective methods. J. Cataract Refract. Surg. 2013; 39(10): 1534–1542.
CITATIONS (1):
1.
Are binocular alignment and convergence amplitude different between phakic and pseudophakic older patients?
Hassan Hashemi, Mehdi Khabazkhoob, Amir Asharlous, Alireza Hashemi
Strabismus
Hassan Hashemi, Mehdi Khabazkhoob, Amir Asharlous, Alireza Hashemi
Strabismus
The Medical University of Silesia in Katowice, as the Operator of the annales.sum.edu.pl website, processes personal data collected when visiting the website. The function of obtaining information about Users and their behavior is carried out by voluntarily entered information in forms, saving cookies in end devices, as well as by collecting web server logs, which are in the possession of the website Operator. Data, including cookies, are used to provide services in accordance with the Privacy policy.
You can consent to the processing of data for these purposes, refuse consent or access more detailed information.
You can consent to the processing of data for these purposes, refuse consent or access more detailed information.