Precise angle alignment of toric IOLs

Integrated recticle

Precise positioning

During implantation of toric IOLs, precise angle alignment of the lens in the capsule is required. For this procedure, Haag-Streit offers Tocular, a rotatable wideangle ocular with an integrated reticle that can be rotated manually via a sterilizable knob. For best visibility, the reticle is clear in the center of the visual field. It allows an IOL alignment of better than +/- 2°.


Marking of the eye

Prior to the operation, the astigmatic angle must be determined with a keratoscope or a biometer such as the Haag-Streit Lenstar 900. The vertical and/or horizontal coordinates are ink-marked on the eye with a sterilizable pre-marker as the Davis pre-marking system distributed by John Weiss.

Positioning the toric IOL

Matching the markings

After implantation of the IOL, the microscope zoom is adjusted to show the ink-marking in the visual field of the oculars. With the knob on the TOCULAR, the reticle is turned to align the large-scaled markings with the ink-marks on the eye. Now the IOL can be brought into position using the medium and small reticle markings.