Ultrasound biomicroscopy of Baikoff anterior chamber phakic intraocular lenses.
BACKGROUND
The purpose of the study was to analyze qualitatively and quantitatively anatomic relationships of anterior chamber Baikoff phakic intraocular lenses (IOL) to the cornea, angle, iris, and lens in myopic eyes.


METHODS
Thirteen phakic myopic eyes (-9.00 to -15.00 diopters) corrected by minus power, angle-supported, anterior chamber intraocular lenses of the ZB5M style (Chiron-Domilens), with a mean follow-up of 25 months (range 18 to 36 months), were examined clinically and by ultrasound biomicroscopy.


RESULTS
The mean distance (+/- SD) between the central cornea and the IOL was 2.05 +/- 0.18 mm (range 1.8 to 2.47 mm); mean distance between the corneal periphery and the IOL was 1.56 +/- 0.17 mm (range 1.33 to 1.95 mm); and the mean distance between the IOL and the lens was 0.58 +/- 0.12 mm (range 0.48 to 0.81 mm). IOL footplates seemed to be correctly positioned in the angle in all eyes. We observed no goniosynechiae. In six eyes, we found localized posterior indentation of the iris caused by the haptics. Four of these six eyes exhibited oval pupils associated with an oversized IOL.


CONCLUSIONS
High frequency ultrasound biomicroscopy can define anatomic relationships of anterior chamber phakic IOLs, and help analyze the mechanisms of corneal and iris complications.
Saragoussi
J J
JJ
Department of Ophthalmology, Hotel-Dieu Hospital of Paris, France.
Puech
M
M
Assouline
M
M
Berges
O
O
Renard
G
G
Pouliquen
Y J
YJ
D000328:Adult; D000867:Anterior Chamber / Q000000981:diagnostic imaging* / Q000601:surgery; D016477:Artifacts; D002924:Ciliary Body / Q000000981:diagnostic imaging; D003315:Cornea / Q000000981:diagnostic imaging; D005500:Follow-Up Studies; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007498:Iris / Q000000981:diagnostic imaging; D007910:Lenses, Intraocular; D008853:Microscopy; D008875:Middle Aged; D009216:Myopia / Q000000981:diagnostic imaging / Q000601:surgery; D011183:Postoperative Complications; D011680:Pupil; D012189:Retrospective Studies; D014463:Ultrasonography