13 Works

iLASIK after Implantation of a Tecnis Multifocal IOL

Prof. Dr. Michael C. Knorz
This video shows an iLASIK procdure using the IntraLase iFS femtosecond laaer and the Visx STAAR S4 excimer laser to perform a wavefront-guided LASIK after implantation of a Tecnis diffractive mutifocal IOL.

IOL Luxation during silicone oil removal

Bernd Kirchhof
In an eye with a subluxated IOL and during silicone oil removal, all of a sudden the IOL disappears, possibly because the caspular bag was aspirated with the oil. Soon thereafter the iris is transiently aspirated by the aspiration needle. The IOL is found on the retina of the posterior pole. It is elevated with a flute needle (silicone tipped), grasped with foreps by its haptics and extracted via a sclerotomy. Later on a chamger...

Laser Refractive Lens Surgery using an Intraocular Femtosecond Laser

Prof. Dr. Michael C. Knorz
This video shows an intraocular femtosecond laser (Alcon LenSx Lasers, Inc, Ft. Worth, TX, USA) used to perform laser refractive lens surgery. The laser uses build-in optical coherence tomography (OCT) to image the cornea, lens capsule and lens. Nucleus liquefaction, capsulorhexis and corneal incisions are then positioned on the screen, and the laser performs lens liquefaction followed by capsulorhexis and corneal incisions. Irrigation/aspiration only is used to remove the liquefied lens nucleus, and an intraocular...

aniridia aphakia implant and corneal transplant surgery

Dr. Barbara Parolini Carbognin
the patient had undergone perforating trauma with loss of corneal tissue, aniridia aphakia and retinal detachment. the first surgery was performed to repair retinal detachment and to perform the first corneal transplant, with a gain in vision to 0,1 Snellen acuity pinhole. the corneal graft failed after silicone oil removal. one further surgery (Video) was planned to replace the corneal graft and to reconstruct the anterior segment with an aniridia aphakia implant.

Low viscosity silicone oil as infusion fluid in vitreous hemorrhage

Bernd Kirchhof
In vitrectomy of massive vitreous hemorrhage the view is typically compromised by stirred blood. In order to speed up the procedure saline as infusion fluid is replaced by very low viscosity silicone oil. The silicone has the advantage not to mix with blood. At the same time all vitrectomy procedures can be performed as like under saline. The much improved view into the eye should shorten the procedure. In the end the silicone oil as...

Implantation of the Acrysof Cachet Phakic IOL with Passive Irrigation

Prof. Dr. Michael C. Knorz
This video demonstrates the implantation of the Acrysof Cachet phakic IOL in a highly myopic patient. Passive irrigation is used to remove the viscoelastic material after implantation.

iLASIK using IntraLase iFS and Visx STAR S4

Prof. Dr. Michael C. Knorz
The video shows an iLASIK procedure performed with the IntraLase iFS femtosecond laser and the Visx STAR S4 excimer laser.

The bell pepper experiment: a novel self-sealing “screwcut” incision for sutureless vitrectomy

LO Hattenbach
Flattened sclerotomies are an essential step in ensuring postoperative wound stability in transconjunctival sutureless vitrectomy. However, in complex cases involving complete vitrectomy with shaving of the vitreous base, laser application and peeling of surface membranes, conventional angled incisions often leak at the end of the procedure. Here, we present a novel curved and twisted (screw-like=“screwcut“) self-sealing incision technique using a 23-gauge one-step microcannula array with sharp solid trocar blades. Based on a simple kitchen experiment,...

Iatrogenic transfoveal submacular injection of liquid perfluorocarbon

Bernd Kirchhof
The overly hard fluid jet of liquid perfluorocarbon directed towards the posterior pole of the eye near the retinal surface perforates the fovea. Most of the subretinal fluid escapes spontaneously via a pre-existing retinotomy. Remnants of submacular PFCL are being evacuated by the pressure of a preretinal PFCL bubble and subretinal aspiration. The procedure is completed by submacular transplantation of autologous pigment epithelium and choroid. The iatrogenic macular hole is addressed by ILM peeling.

Hamartoma of the optic disc and the retinal pigment epithelium

Bernd Kirchhof
A combined hamartoma of the optic disc and the RPE may show as a submacular CNV or/ and an epimacular gliosis. In this example the visual acuity is 20/200 and stable but metamorphopsia is a constant complaint. The surgical approach aims to release epiretinal traction via ILM peeling and thereby improve the metamorphopsia. No epiretinal tissue is found, since the ILM stains homogenously. A fibrous tuft is peeled from the optic disc. Since in angiography...

Implantation of the Acrysof Cachet phakic IOL with bimanual I/A

Prof. Dr. Michael C. Knorz
This video demonstrates the implantation of the Acrysof Cachet phakic IOL in a highly myopic patient in topical anesthesia. Bimanual I/A is used to remove the viscoelastic material after implantation.

Femtosecond Laser LASIK with the AMO FS 60 Femtosecond Laser

Prof. Dr. Michael C. Knorz
This video demonstrates a LASIK procedure with the AMO FS 60 femtosecond laser and the Visx STAR IR excimer laser.

vitrectomy for Valsalva's maculopathy

M.D. Shaarawy
Valsalva's Maculopathy is an uncommon cause of visual loss in young patients following severe physical exertion,strains,vomiting and sexual intercourse.A video clip describing a vitrectomy procedure to treat that condition.

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