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THE NECESSITY OF AXIAL LENGTH A SCAN IN INTRAOCULAR LENS POWER ESTIMATION
Author(s) -
Tamblyn Dm
Publication year - 1981
Publication title -
australian journal of opthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.3
H-Index - 74
eISSN - 1442-9071
pISSN - 0310-1177
DOI - 10.1111/j.1442-9071.1981.tb00925.x
Subject(s) - surprise , estimation , dioptre , lens (geology) , power (physics) , optometry , through the lens metering , computer science , ophthalmology , optics , medicine , physics , psychology , engineering , visual acuity , social psychology , systems engineering , quantum mechanics
The difficulties of accurate estimation of intraocular lens power (I.O.L.) are presented. Axial length A Scan measurement can overcome some of these and avoid the occasional large dioptre surprise. The results of 50 consecutive cases are shown and various methods of I.O.L. power estimation compared. These show that without A Scan, the occasional aniseikonic disaster will occur.