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Distribution of corneal spherical aberration in a Tanzanian population.
PLoS One 2019; 14(9):e0222297Plos

Abstract

PURPOSE

To investigate the distribution of corneal spherical aberration (SA) in Tanzanian people of African descent, and to examine the correlation between corneal SA and ocular parameters.

DESIGN

Cross-sectional population-based study.

METHODS

Residents aged 40 years and older in three villages in the Mkuranga district in Tanzania were enlisted as study participants. Corneal higher-order aberrations (HOAs) for the right eye were measured with a wavefront analyzer (KR-1W, Topcon) and calculated for the central 6.0-mm zone. Corneal curvature radius (CR), corneal astigmatism, and axial length (AL) were also measured and their correlation with corneal SA was assessed.

RESULTS

The right eyes of 657 participants (336 male, 321 female) were analyzed. The mean age of the subjects was 57.2 ± 10.3 years (mean ± SD). The mean corneal SA (Zernike spherical aberration coefficient C40) was 0.188 ± 0.095 μm (-0.242 to 0.613). The SAs in about three-quarters of all subjects were between 0.10 and 0.30 μm. The root mean squares of total corneal HOAs and the third- and fourth-order aberrations were 0.629 ± 0.250 μm, 0.539 ± 0.236 μm, and 0.269 ± 0.110 μm, respectively. Corneal SA showed weak significant correlations with CR (Spearman's rank correlation coefficient, r = -0.177, p < 0.001), corneal astigmatism (r = -0.142, p < 0.001), AL (r = -0.168, p < 0.001), and age (r = -0.085, p < 0.05).

CONCLUSIONS

This finding may be beneficial for selecting aspheric intraocular lens in this population.

Authors+Show Affiliations

Department of Ophthalmology, Tsuchiura Kyodo Hospital Namegata District Medical Center, Ibaraki, Japan.Department of Ophthalmology, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan.Department of Ophthalmology, Kanazawa Medical University, Ishikawa, Japan.Department of Ophthalmology, Kanazawa Medical University, Ishikawa, Japan.Department of Ophthalmology, Kanazawa Medical University, Ishikawa, Japan. Department of Ophthalmology, Nagano Matsushiro General Hospital, Nagano, Japan.Department of Ophthalmology, Tsuchiura Kyodo Hospital Namegata District Medical Center, Ibaraki, Japan.Department of Ophthalmology, Kanazawa Medical University, Ishikawa, Japan.Visual Science Course, Department of Rehabilitation, Faculty of Medical Science and Welfare, Tohoku Bunka Gakuen University, Miyagi, Japan.Kagoshima Minami Eye Clinic, Kagoshima, Japan.Department of Ophthalmology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania.Department of Ophthalmology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania.Department of Ophthalmology, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan.Department of Ophthalmology, Kanazawa Medical University, Ishikawa, Japan.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31513608

Citation

Asano, Hiroki, et al. "Distribution of Corneal Spherical Aberration in a Tanzanian Population." PloS One, vol. 14, no. 9, 2019, pp. e0222297.
Asano H, Hiraoka T, Seki Y, et al. Distribution of corneal spherical aberration in a Tanzanian population. PLoS ONE. 2019;14(9):e0222297.
Asano, H., Hiraoka, T., Seki, Y., Shibata, T., Osada, H., Saruta, T., ... Sasaki, H. (2019). Distribution of corneal spherical aberration in a Tanzanian population. PloS One, 14(9), pp. e0222297. doi:10.1371/journal.pone.0222297.
Asano H, et al. Distribution of Corneal Spherical Aberration in a Tanzanian Population. PLoS ONE. 2019;14(9):e0222297. PubMed PMID: 31513608.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Distribution of corneal spherical aberration in a Tanzanian population. AU - Asano,Hiroki, AU - Hiraoka,Takahiro, AU - Seki,Yusuke, AU - Shibata,Teppei, AU - Osada,Hiromi, AU - Saruta,Takanori, AU - Hatsusaka,Natsuko, AU - Fujikake,Fukumi, AU - Tabata,Yoshiaki, AU - Mhina,Cellina, AU - Sanyiwa,Anna, AU - Oshika,Tetsuro, AU - Sasaki,Hiroshi, Y1 - 2019/09/12/ PY - 2019/04/22/received PY - 2019/08/26/accepted PY - 2019/9/13/entrez PY - 2019/9/13/pubmed PY - 2019/9/13/medline SP - e0222297 EP - e0222297 JF - PloS one JO - PLoS ONE VL - 14 IS - 9 N2 - PURPOSE: To investigate the distribution of corneal spherical aberration (SA) in Tanzanian people of African descent, and to examine the correlation between corneal SA and ocular parameters. DESIGN: Cross-sectional population-based study. METHODS: Residents aged 40 years and older in three villages in the Mkuranga district in Tanzania were enlisted as study participants. Corneal higher-order aberrations (HOAs) for the right eye were measured with a wavefront analyzer (KR-1W, Topcon) and calculated for the central 6.0-mm zone. Corneal curvature radius (CR), corneal astigmatism, and axial length (AL) were also measured and their correlation with corneal SA was assessed. RESULTS: The right eyes of 657 participants (336 male, 321 female) were analyzed. The mean age of the subjects was 57.2 ± 10.3 years (mean ± SD). The mean corneal SA (Zernike spherical aberration coefficient C40) was 0.188 ± 0.095 μm (-0.242 to 0.613). The SAs in about three-quarters of all subjects were between 0.10 and 0.30 μm. The root mean squares of total corneal HOAs and the third- and fourth-order aberrations were 0.629 ± 0.250 μm, 0.539 ± 0.236 μm, and 0.269 ± 0.110 μm, respectively. Corneal SA showed weak significant correlations with CR (Spearman's rank correlation coefficient, r = -0.177, p < 0.001), corneal astigmatism (r = -0.142, p < 0.001), AL (r = -0.168, p < 0.001), and age (r = -0.085, p < 0.05). CONCLUSIONS: This finding may be beneficial for selecting aspheric intraocular lens in this population. SN - 1932-6203 UR - https://www.unboundmedicine.com/medline/citation/31513608/Distribution_of_corneal_spherical_aberration_in_a_Tanzanian_population DB - PRIME DP - Unbound Medicine ER -