| Description | This unique system uses prolene as thread-guide reducing time and trauma in lacrimal duct intubation. The hollow Ritleng Probe is inserted into the nasolacrimal duct and a thin prolene thread-guide is fed through it. The probe is then withdrawn | The MASTERKA is indicated for congenital nasolacrimal duct obstructions that are resistant to probing. Unlike the traditional “pulled” technique in which the stent is advanced through the nasolacrimal system and retrieved through the nose by pulling |