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ULTRASONIC MEASUREMENT OF TRANSVERSE LENS DIAMETER DURING ACCOMMODATION
Author(s) -
Storey J. K.,
Rabie E. P.
Publication year - 1985
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.1475-1313.1985.tb00649.x
Subject(s) - accommodation , transverse plane , optics , emmetropia , lens (geology) , ultrasound , ultrasonic sensor , materials science , physics , acoustics , refractive error , medicine , anatomy , visual acuity
— A new method is introduced which makes possible in vivo measurement of transverse lens diameter (T.L.D.) with ultrasound. The horizontal T.L.D. was measured for 7 nearly emmetropic subjects at accommodation stimulus levels of 0,2,4,6 and 8 dioptres. The unaccommodated T.L.D. was found to be proportional to the axial length. The mean unaccommodated T.L.D. was found to be larger than in vitro measurements reported in the literature.