30 results about "Epikeratoplasty" patented technology

Optical coherence tomography (OCT) is used to map the surface elevation and thickness of the cornea. The OCT maps are used to plan laser procedures for the treatment of an irregular, opacified or weakened cornea, and in the treatment of refractive errors. In the excimer laser phototherapeutic keratectomy (PTK) procedure, the OCT data is used to plan a map of ablation depth needed to restore a smooth optical surface. In the excimer laser photorefractive keratectomy procedure, OCT mapping of epithelial thickness is used to achieve clean laser epithelial removal. In femtosecond laser anterior keratoplasty procedure, OCT data is used to plan the depth of femtosecond laser dissection to remove an anterior layer of the cornea, leaving a smooth recipient bed of uniform thickness to receive a disk of donated corneal tissue. The linkage of an OCT system to a precise laser surgical system enables the performance of new procedures that are safer, less invasive and produce faster visual recovery than conventional surgical procedures.

Improved operational process and procedure for conductive keratoplasty (CK). CK spots are placed at different locations on the cornea depending on the thickness of the cornea. The spots preferably are 80-95% of the thickness of the cornea. Keratoplasty probes with larger tips can be utilized.

The invention relates to a tearing instrument for the corneal posterior lamella in the ophthalmology. The tearing instrument for the corneal posterior lamella in the ophthalmology comprises tearing forceps and auxiliary hooks; the tearing forceps are provided with a forceps handle, forceps arms, inclined clamping arms and forceps teeth; the forceps handle is connected with the two forceps arms; the inclined clamping arms are connected with the two forceps arms respectively, and the forceps teeth are located at the tail ends of the inclined clamping arms; an include angle is formed between eachinclined clamping arm and the corresponding forceps arm. The direction of the forceps teeth faces the inner sides of the inclined clamping arms. The auxiliary hooks are provided with hook handles, hook arms and hook heads, and the hook arms are connected to the lower ends of the hook handles; the hook arms are downward bent in the reverse direction, and the bent direction of the hook arms is identical to that of the inclined clamping arms. The tearing instrument for the corneal posterior lamella in the ophthalmology has the advantages that through the tearing surgery of the anterior chamber corneal posterior lamella, the case of the turbid residual corneal posterior lamella after deep anterior lamella keratoplasty can be prevented from secondary keratoplasty; meanwhile, decompensation ofthe function of corneal endothelium cannot be caused. The instrument is convenient to operate, the cost can be lowered, and the complication risks are reduced.

The present solution can temporarily impart the handling characteristics of corneal stroma to the otherwise very thin, flimsy, coiling, and fragile Descemet membrane endothelial keratoplasty (DMEK) tissue during its insertion into the anterior chamber and positioning in apposition against the cornea of the recipient eye. The device of the present solution can be configured in a number of ways. In a first configuration, a scaffold can be coupled with the endothelial side of the DMEK graft. In a second configuration, the scaffold can be coupled with the stromal side of the DMEK graft. In a third configuration, one or more scaffolds can be coupled with both the endothelial and stromal side of the DMEK graft.

It is intended to provide an agent for promoting corneal neuritogenesis containing PACAP, a PACAP derivative or a pharmaceutically acceptable salt thereof, in particular, an agent for promoting corneal neuritogenesis aiming at improving corneal sensitivity, treating dry eye and treating corneal epithelial injury due to an effect of promoting corneal neuritogenesis. This agent for promoting corneal neuritogenesis is useful as a drug for ameliorating reduction in corneal sensitivity following corneal surgeries such as laser keratonomy (LASIK) and corneal grafting or cataract surgery, reduction in corneal sensitivity accompanying corneal neurodegeneration and dry eye symptom and corneal epithelial injury accompanying such reduction in corneal sensitivity. Moreover, it is useful as a drug for ameliorating dry eye symptom, reduction in corneal sensitivity and corneal epithelial injury in patients with dry eye, and a drug for ameliorating corneal epithelial injury and dry eye symptom and reduction in corneal sensitivity accompanying therewith.