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The average eye
Author(s) -
Harris W. F.
Publication year - 2004
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1111/j.1475-1313.2004.00239.x
Subject(s) - property (philosophy) , lens (geology) , logarithm , refractive error , set (abstract data type) , computer science , exponential function , optics , optical power , mathematics , optometry , physics , mathematical analysis , visual acuity , medicine , laser , philosophy , epistemology , programming language
For statistical and other purposes one needs to be able to determine an average eye. An average of refractive errors is readily calculated as an average of dioptric power matrices. A refractive error, however, is not so much a property of the eye as a property of the compensating lens in front of the eye. As such, it ignores other aspects of the optical character of the eye. This paper discusses the difficulties of finding a suitable average that fully accounts for the first‐order optics of a set of optical systems. It proposes an average based on ray transferences and logarithms and exponentials of matrices. Application to eyes in particular is discussed.