scholarly journals Lower sensitivity to peripheral hypermetropic defocus due to higher order ocular aberrations

2020 ◽  
Vol 40 (3) ◽  
pp. 300-307
Author(s):  
Petros Papadogiannis ◽  
Dmitry Romashchenko ◽  
Peter Unsbo ◽  
Linda Lundström
Keyword(s):  
Higher Order ◽  
Lower Sensitivity ◽  
Ocular Aberrations

scholarly journals Acute Effect of Cigarette Smoking on Pupil Size and Ocular Aberrations: A Pre- and Postsmoking Study

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Uzeyir Erdem ◽  
Fatih C. Gundogan ◽  
Umut Aslı Dinc ◽  
Umit Yolcu ◽  
Abdullah Ilhan ◽  
...  
Keyword(s):  
Cigarette Smoking ◽  
Pupil Size ◽  
Spherical Aberration ◽  
Acute Effect ◽  
Optical Path Difference ◽  
Higher Order ◽  
Scanning System ◽  
Wavefront Aberration ◽  
Ocular Aberrations ◽  
Higher Order Aberration

Aim.To evaluate the acute effects of cigarette smoking on photopic and mesopic pupil sizes and wavefront aberrations.Methods.Cigarette smoker volunteers were recruited in the study. Photopic and mesopic pupil sizes and total ocular aberrations were measured before smoking and immediately after smoking. All volunteers were asked to smoke a single cigarette containing 1.0 mg nicotine. Pupil sizes and total ocular aberrations were assessed by optical path difference scanning system (OPD-Scan II ARK-10000, NIDEK). Only the right eyes were considered for statistical analysis. The changes of pupil size and total ocular aberrations after smoking were tested for significance by Wilcoxon signed ranks test.Results.Mean photopic pupil size decreased from 3.52 ± 0.73 mm to 3.29 ± 0.58 mm(P=0.001)after smoking. Mean mesopic pupil size was also decreased from 6.42 ± 0.75 mm to 6.14 ± 0.75 mm after smoking(P=0.001). There was a decrease in all the measured components of aberrations (total wavefront aberration, higher-order aberration, total coma, total trefoil, total tetrafoil, total spherical aberration and total higher-order aberration) after smoking; however the differences were insignificant for all(P>0.05).Conclusion.Our results indicate that pupil constricts after smoking. On the other hand, smoking does not alter ocular aberrations.

Evaluation of Higher Order Ocular Aberrations in Patients With Keratoconus

2007 ◽  
Vol 23 (8) ◽  
pp. 825-828 ◽  
Author(s):  
Li Lim ◽  
Rui Hua Wei ◽  
Wing Kwong Chan ◽  
Donald T H Tan
Keyword(s):  
Higher Order ◽  
Ocular Aberrations

Higher Order Ocular Aberrations and Their Relation to Refractive Error and Ocular Biometry in Children

2014 ◽  
Vol 55 (8) ◽  
pp. 4791 ◽  
Author(s):  
Julie-Anne Little ◽  
Sara J. McCullough ◽  
Karen M. M. Breslin ◽  
Kathryn J. Saunders
Keyword(s):  
Refractive Error ◽  
Higher Order ◽  
Ocular Biometry ◽  
Ocular Aberrations

Higher Order Ocular Aberrations in Eyes With Myopia in a Chinese Population

2006 ◽  
Vol 22 (7) ◽  
pp. 695-702 ◽  
Author(s):  
Rui Hua Wei ◽  
Wing Kwong Chan ◽  
Donald T H Tan
Keyword(s):  
Chinese Population ◽  
Higher Order ◽  
Ocular Aberrations

Higher Order Ocular Aberrations After Cycloplegic and Non-cycloplegic Pupil Dilation

2003 ◽  
Vol 19 (3) ◽  
pp. 316-322 ◽  
Author(s):  
Andrew Carkeet ◽  
Shajan Velaedan ◽  
Yong Kang Tan ◽  
Derrick Yu Jiang Lee ◽  
Donald T H Tan
Keyword(s):  
Higher Order ◽  
Pupil Dilation ◽  
Ocular Aberrations

scholarly journals Ocular aberrations and wavefront aberrometry: A review

2015 ◽  
Vol 74 (1) ◽  
Author(s):  
Holly A. Unterhorst ◽  
Alan Rubin
Keyword(s):  
Refractive Error ◽  
Lower Order ◽  
Refractive Surgery ◽  
Higher Order ◽  
Refractive Errors ◽  
Routine Procedure ◽  
Wavefront Aberrations ◽  
Ocular Aberrations ◽  
Wavefront Aberrometry ◽  
Visual Disturbances

Wavefront aberrations can be described as deviations of the wavefront exiting the eye froma reference wavefront that is aberration free and diffraction limited. Ocular aberrations canbe sub-categorised as lower and higher order aberrations. Ocular aberrations have promptedinterest amongst the ocular healthcare community owing to their influences on the visualfunctioning of patients as well as differences observed in ocular aberrations through the useof refractive surgery both pre- and post-operatively. Uncompensated refractive error remainsone of the most common reasons for which patients consult optometrists. Compensationof refractive error, or lower order aberrations, has become a routine procedure during anoptometric examination. However, there are some patients who experience visual symptomseven after their refractive errors have been compensated via spectacles or contact lenses.Higher-order aberrations may be the source of these visual disturbances. Refractive surgeryhas been found to influence and even induce various changes in higher-order aberrationspost-operatively, which in turn has led to increased interest in wavefront aberrations and howthe measurement of these aberrations can improve diagnosis and treatment within optometryand ophthalmology.

Diurnal Fluctuation of Higher Order Ocular Aberrations: Correlation With Intraocular Pressure and Corneal Thickness

2004 ◽  
Vol 20 (3) ◽  
pp. 236-242 ◽  
Author(s):  
Peter Mierdel ◽  
Hans-Eberhard Krinke ◽  
Katharina Pollack ◽  
Eberhard Spoerl
Keyword(s):  
Intraocular Pressure ◽  
Corneal Thickness ◽  
Higher Order ◽  
Diurnal Fluctuation ◽  
Ocular Aberrations

scholarly journals Changes in the Higher Order Ocular Aberrations and Central Corneal Thickness After T-PRK and Fs-LASIK

2020 ◽  
Vol 28 (2) ◽  
pp. 98
Author(s):  
Alma Biscevic ◽  
Melisa Pjano ◽  
Adi Pasalic ◽  
Nina Ziga ◽  
Kresimir Gabric ◽  
...  
Keyword(s):  
Central Corneal Thickness ◽  
Corneal Thickness ◽  
Higher Order ◽  
Ocular Aberrations
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