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Visual quality assessment and imaging techniques used to study biomaterials
Author(s) -
Spalton D.
Publication year - 2015
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2015.0686
Subject(s) - strehl ratio , optical transfer function , wavefront , quality (philosophy) , image quality , optics , optometry , adaptive optics , visual acuity , computer science , medicine , computer vision , biomedical engineering , physics , quantum mechanics , image (mathematics)
Summary Cataract surgery has evolved from a sight saving procedure to one which improves the quality of vision. Quality of vision can be thought of as the physical resolving power of the eye, what the patient sees together with associated dysphotopsia, quality of the IOL relies on quality of manufacture and quality of the optics influenced by quality of surgery. Environmental scanning electron microscopy has proved extremely useful in assessing the profile of an IOL , intra lenticule glistenings can be imaged and semi quantified and atomic force microscopy examines surface smoothness and a wide range of other techniques are require to assess other biomaterial properties. Optics can be characterised by measuring modulation transfer function, Strehl ratio and wavefront, and vision by acuity and contrast sensitivity, measurement of forward scatter of light remains difficult and controversial. Patient reported outcomes are being increasingly used to differentiate clinical from subclinical improvement.