Ultrasound biomicroscopy of ZSAL-4 anterior chamber phakic intraocular lens for high myopia.
OBJECTIVE
To evaluate the intraocular location and anatomic relationship to other structures of the ZSAL-4 angle-supported anterior chamber phakic intraocular lens (IOL) for high myopia using ultrasound biomicroscopy (UBM).


METHODS
Clínica de Nuestra Señora de la Concepción, Fundación Jiménez Díaz, and Instituto de Investigaciones Oftalmológicas Ramón Castroviejo, Madrid, Spain.


METHODS
Eight phakic myopic eyes corrected by ZSAL-4 angle-supported anterior chamber phakic IOLs were examined by UBM. The distance between the corneal endothelium and the IOL at the central and peripheral cornea and between the phakic IOL and the iris was measured.


RESULTS
The mean distance between the central cornea and the IOL was 2361.37 microm +/- 109.62 (SD); between the edge of the IOL optic and the endothelium, 1646.24 +/- 27.06 microm; and between the IOL and the iris, 354.46 +/- 41.61 microm. The IOL footplates appeared to be correctly positioned in the anterior chamber angle in all eyes.


CONCLUSIONS
The space between the IOL and the endothelium was greater in eyes with the ZSAL-4 angle-supported phakic IOL than in eyes with other angle-supported phakic IOLs. The possibility of intermittent contact between the IOL edge and the midperipheral cornea plays a minor role in the mechanism of endothelial damage with this lens model.
Jiménez-Alfaro
I
I
Department of Ophthalmology, Fundación Jiménez Díaz, Madrid, Spain.
García-Feijoó
J
J
Pérez-Santonja
J J
JJ
Cuiña
R
R
D000328:Adult; D000867:Anterior Chamber / Q000000981:diagnostic imaging* / Q000601:surgery; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D007908:Lens, Crystalline / Q000000981:diagnostic imaging*; D007910:Lenses, Intraocular; D008297:Male; D008853:Microscopy; D009216:Myopia / Q000000981:diagnostic imaging* / Q000601:surgery; D012189:Retrospective Studies; D014463:Ultrasonography; D014792:Visual Acuity