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Comparison of higher-order aberrations between eyes with natural supervision and highly myopic eyes in Koreans.

Kim M, Lee YG, Seo KR, Kim EK, Lee HK - Korean J Ophthalmol (2007)

Bottom Line: The mean values of coma, trefoil, and spherical aberration were 0.14+/-0.091 microm, 0.14+/-0.089 microm, 0.091+/-0.059 microm in Group 1 and 0.16+/-0.077 microm, 0.14+/-0.073 microm, 0.082+/-0.059 microm in Group 2, respectively.This study helped establish ocular aberration standards for those with natural supervision and those with highly myopic eyes among Koreans.The index of higher-order aberrations may not be a perfect predictor of the amount of refractive error.

View Article: PubMed Central - PubMed

Affiliation: Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea.

ABSTRACT

Purpose: To describe the characteristics and investigate the differences of higher-order aberrations (HOAs) between the eyes with a natural, uncorrected visual acuity (UCVA) of 20/12 and eyes with highly myopic eyes in Korean adults.

Methods: Thirty-one eyes of 20 subjects with UCVA of 20/12 (Group 1) and 54 eyes of 36 myopic patients with greater than -6 diopters (Group 2) were analyzed for type and magnitude of HOAs across a 6.0 mm pupil. HOAs were measured by Wavescan (VISX, Santa Clara, CA, USA) in natural scotopic conditions and were presented as root-mean-square (RMS: microm) in Belle aberration maps.

Results: The mean spherical equivalent (SE) of manifest refraction was -0.15+/-0.25 D (range: +0.37 to -0.50 D) in Group 1 and -7.25+/-0.78 D (range: -6.00 to -9.25 D) in Group 2. The total root-mean-square (RMS) values of HOAs for Group 1 and Group 2 were 0.28+/-0.09 microm and 0.27+/-0.087 microm, respectively (P>0.05). The mean values of coma, trefoil, and spherical aberration were 0.14+/-0.091 microm, 0.14+/-0.089 microm, 0.091+/-0.059 microm in Group 1 and 0.16+/-0.077 microm, 0.14+/-0.073 microm, 0.082+/-0.059 microm in Group 2, respectively.

Conclusions: This study helped establish ocular aberration standards for those with natural supervision and those with highly myopic eyes among Koreans. Individuals with natural supervision had significant amounts of HOAs, and there was no significant difference in the amount of HOAs between the two groups. The index of higher-order aberrations may not be a perfect predictor of the amount of refractive error.

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Related in: MedlinePlus

Comparison of total HOAs* and individual higher-order aberrations of each group.*HOAs=higher-order aberrations, SA=spherical aberration.
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Figure 1: Comparison of total HOAs* and individual higher-order aberrations of each group.*HOAs=higher-order aberrations, SA=spherical aberration.

Mentions: The mean root-mean-square (RMS) values of Group 1 and Group 2 for total HOAs were 0.28±0.09 µm and 0.275±0.087 µm, respectively (p>0.05) (Table 2). The mean RMS values for each order decreased progressively from the 3rd order to the 6th order. Fig. 1 represents the comparison of total HOAs as well as other higher-order individual aberrations, and no statistically significant difference was observed between the two groups (p>0.05).


Comparison of higher-order aberrations between eyes with natural supervision and highly myopic eyes in Koreans.

Kim M, Lee YG, Seo KR, Kim EK, Lee HK - Korean J Ophthalmol (2007)

Comparison of total HOAs* and individual higher-order aberrations of each group.*HOAs=higher-order aberrations, SA=spherical aberration.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2629696&req=5

Figure 1: Comparison of total HOAs* and individual higher-order aberrations of each group.*HOAs=higher-order aberrations, SA=spherical aberration.
Mentions: The mean root-mean-square (RMS) values of Group 1 and Group 2 for total HOAs were 0.28±0.09 µm and 0.275±0.087 µm, respectively (p>0.05) (Table 2). The mean RMS values for each order decreased progressively from the 3rd order to the 6th order. Fig. 1 represents the comparison of total HOAs as well as other higher-order individual aberrations, and no statistically significant difference was observed between the two groups (p>0.05).

Bottom Line: The mean values of coma, trefoil, and spherical aberration were 0.14+/-0.091 microm, 0.14+/-0.089 microm, 0.091+/-0.059 microm in Group 1 and 0.16+/-0.077 microm, 0.14+/-0.073 microm, 0.082+/-0.059 microm in Group 2, respectively.This study helped establish ocular aberration standards for those with natural supervision and those with highly myopic eyes among Koreans.The index of higher-order aberrations may not be a perfect predictor of the amount of refractive error.

View Article: PubMed Central - PubMed

Affiliation: Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea.

ABSTRACT

Purpose: To describe the characteristics and investigate the differences of higher-order aberrations (HOAs) between the eyes with a natural, uncorrected visual acuity (UCVA) of 20/12 and eyes with highly myopic eyes in Korean adults.

Methods: Thirty-one eyes of 20 subjects with UCVA of 20/12 (Group 1) and 54 eyes of 36 myopic patients with greater than -6 diopters (Group 2) were analyzed for type and magnitude of HOAs across a 6.0 mm pupil. HOAs were measured by Wavescan (VISX, Santa Clara, CA, USA) in natural scotopic conditions and were presented as root-mean-square (RMS: microm) in Belle aberration maps.

Results: The mean spherical equivalent (SE) of manifest refraction was -0.15+/-0.25 D (range: +0.37 to -0.50 D) in Group 1 and -7.25+/-0.78 D (range: -6.00 to -9.25 D) in Group 2. The total root-mean-square (RMS) values of HOAs for Group 1 and Group 2 were 0.28+/-0.09 microm and 0.27+/-0.087 microm, respectively (P>0.05). The mean values of coma, trefoil, and spherical aberration were 0.14+/-0.091 microm, 0.14+/-0.089 microm, 0.091+/-0.059 microm in Group 1 and 0.16+/-0.077 microm, 0.14+/-0.073 microm, 0.082+/-0.059 microm in Group 2, respectively.

Conclusions: This study helped establish ocular aberration standards for those with natural supervision and those with highly myopic eyes among Koreans. Individuals with natural supervision had significant amounts of HOAs, and there was no significant difference in the amount of HOAs between the two groups. The index of higher-order aberrations may not be a perfect predictor of the amount of refractive error.

Show MeSH
Related in: MedlinePlus