Changes in Higher Order Aberrations and Contrast Sensitivity after Implantation of a Phakic Artisan Intraocular Lens

2007 ◽  
Vol 221 (3) ◽  
pp. 167-172 ◽  
Author(s):  
So-Hyang Chung ◽  
Seung Jae Lee ◽  
Hyung Keun Lee ◽  
Kyoung Yul Seo ◽  
Eung Kweon Kim
Keyword(s):  
Contrast Sensitivity ◽  
Intraocular Lens ◽  
Higher Order ◽  
Higher Order Aberrations

Prospective analysis of visual function changes in patients with dermatochalasis after upper eyelid blepharoplasty

2019 ◽  
Vol 30 (5) ◽  
pp. 978-984
Author(s):  
Meryem Altin Ekin ◽  
Seyda Karadeniz Ugurlu
Keyword(s):  
Visual Acuity ◽  
Contrast Sensitivity ◽  
Visual Function ◽  
Spherical Aberration ◽  
Higher Order ◽  
Rank Test ◽  
Higher Order Aberrations ◽  
Upper Eyelid ◽  
Spatial Frequencies ◽  
The Difference

Objective: To evaluate the changes of visual acuity, contrast sensitivity, astigmatism, and higher order aberrations after blepharoplasty in patients with dermatochalasis. Methods: Two hundred six eyelids of 103 patients with dermatochalasis were prospectively studied. Visual acuity, contrast sensitivity, corneal topography, astigmatism degree, and higher order aberrations were examined and recorded before and at 1 month after upper eyelid blepharoplasty. Change in contrast sensitivity and astigmatism values were determined according to margin reflex distance of patients, which were classified into three following groups: <2 mm, 2–3 mm, and ⩾ 4 mm. A Wilcoxon signed rank test was performed to compare the difference. Results: No significant differences were observed for visual acuity (p = 0.157). The contrast sensitivity of patients significantly increased at all spatial frequencies both under glare and nonglare conditions (p < 0.05). The mean refractive astigmatism significantly decreased from ‒1.01 ± 1.3 to ‒0.79 ± 0.71, postoperatively (p = 0.029). In patients with marginal reflex distance < 2 mm, mean contrast sensitivity was increased (p < 0.001) and mean astigmatism was decreased significantly (p < 0.001) compared with those with ⩾ 2 mm. Higher order aberrations decreased significantly from 0.62 ± 0.41 µm to 0.55 ± 0.38 µm (p = 0.038) after blepharoplasty. Root mean square of the vertical trefoil (p = 0.038), vertical coma (p = 0.002), horizontal trefoil (p = 0.027), third-order aberration (p = 0.005), secondary vertical stigmatism (p = 0.001), spherical aberration (p = 0.023), secondary horizontal astigmatism (p = 0.002), fourth-order aberration (p = 0.024), vertical pentafoil (p = 0.015), secondary horizontal coma (p = 0.035), secondary horizontal trefoil (p = 0.030), and horizontal pentafoil (p = 0.048) were decreased significantly. Conclusion: Upper eyelid blepharoplasty in patients with dermatochalasis has a significant improvement in visual function in terms of contrast sensitivity, astigmatism, and higher order aberrations.

Analysis of higher-order aberrations in eyes having undergone intraocular lens suturing

2014 ◽  
Vol 43 (1) ◽  
pp. 92-94 ◽  
Author(s):  
Naoko Aizawa ◽  
Hiroshi Kunikata ◽  
Naoyuki Maeda ◽  
Toru Nakazawa
Keyword(s):  
Intraocular Lens ◽  
Higher Order ◽  
Higher Order Aberrations

Contrast Sensitivity Function and Ocular Higher-Order Aberrations following Overnight Orthokeratology

2007 ◽  
Vol 48 (2) ◽  
pp. 550 ◽  
Author(s):  
Takahiro Hiraoka ◽  
Chikako Okamoto ◽  
Yuko Ishii ◽  
Tetsuhiko Kakita ◽  
Tetsuro Oshika
Keyword(s):  
Contrast Sensitivity ◽  
Higher Order ◽  
Sensitivity Function ◽  
Contrast Sensitivity Function ◽  
Higher Order Aberrations

Comparison of postoperative higher-order aberrations and contrast sensitivity: Tissue-saving versus conventional photorefractive keratectomy for low to moderate myopia

2010 ◽  
Vol 36 (10) ◽  
pp. 1732-1740 ◽  
Author(s):  
Hassan Hashemi ◽  
Rahman Nazari ◽  
Javad Amoozadeh ◽  
Amir Houshang Beheshtnejad ◽  
Mahmoud Jabbarvand ◽  
...  
Keyword(s):  
Contrast Sensitivity ◽  
Higher Order ◽  
Photorefractive Keratectomy ◽  
Higher Order Aberrations

The effect of ocular higher order aberrations on contrast sensitivity.

2009 ◽  
Vol 87 ◽  
pp. 0-0
Author(s):  
T GIANNAKOPOULOU ◽  
S PLAINIS ◽  
A PALLIKARIS ◽  
IG PALLIKARIS
Keyword(s):  
Contrast Sensitivity ◽  
Higher Order ◽  
Higher Order Aberrations
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