higher order aberration


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higher order aberration

In ophthalmology, a refractive error that cannot be corrected by bending light into the eye with eyeglasses or contact lenses.
See also: aberration
References in periodicals archive ?
In 2011 May, Prakash G et al, (1) conducted a study to evaluate the higher order aberrations and resultant bilateral wave front patterns in pediatric patients with idiopathic amblyopia at Cornea and Refractive Surgery Services, Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India.
Important higher order aberrations include coma, trefoil and spherical aberrations and they are measured by root mean square (RMS) value which represents the ocular aberrations in micrometers.
Advanced corneal surface ablation efficacy in myopia: changes in higher order aberrations.
Conclusion: In spite of excellent improvement in refractive error, significant amount of higher order aberrations were induced after WFO LASIK.
She added that this is particularly the case for subjects with impaired optical quality relating to an increase in intraocular light scatter and/ or increased higher order aberrations.
Furthermore, there is great interest in the benefit of correcting such aberrations in order to enhance visual quality; indeed, correction of higher order aberrations has been of prime interest in corneal refractive surgery techniques.
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