Evaluation of an intraoperative toric intraocular lens alignment system using an image-guided system
| Autor: | Oliver Findl, Nino Hirnschall, Birgit Döller, Ralph Varsits |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Adult
Male medicine.medical_specialty Biometry genetic structures Pseudophakia medicine.medical_treatment Ocular surgery Visual Acuity Intraocular lens Refraction Ocular 03 medical and health sciences Reference image Intraoperative Period 0302 clinical medicine Lens Implantation Intraocular Ophthalmology medicine Humans Prospective Studies Rotational alignment Aged Aged 80 and over Microscopy Phacoemulsification business.industry Cataract surgery Middle Aged eye diseases Sensory Systems Surgery Computer-Assisted 030221 ophthalmology & optometry Surgery Female sense organs business Operating microscope 030217 neurology & neurosurgery |
| Zdroj: | Journal of cataract and refractive surgery. 45(9) |
| ISSN: | 1873-4502 |
| Popis: | Purpose To evaluate an intraoperative toric intraocular lens (IOL) alignment system using a dedicated operating microscope with an image-guided system without preoperative corneal marking. Setting Vienna Institute for Research in Ocular Surgery, Department of Ophthalmology, Hanusch Hospital, Vienna, Austria. Design Prospective case series. Methods In this prospective study, a new operating microscope system was used for cataract surgery (toric IOL alignment system of the OPMI Lumera 700 microscope and CALLISTO eye software). This system allows toric IOL alignment by matching limbal vessels from a preoperative photograph with the live image of the microscope. The preoperative photograph was taken with IOLMaster 500, which included a “Reference Image Attachment” system (red-free image), and this was used to track and follow the eye during surgery. After surgery, rotational alignment was assessed and compared with the preoperative axis calculation. At 1 hour postoperatively, a retroilluminaton photograph was taken, and then rotational alignment was compared with the preoperative axis calculation to see the rotational stability. Results Fifty eyes of 50 patients were included. The feasibility of the intraoperative marking was high. Deviation between the postoperative (at the end of surgery in the operating room) and aimed IOL axes was 0.52 degrees ± 0.56 (SD). The deviation between 1 hour postoperatively and the aimed IOL axes was 5.10 ± 4.45 degrees. Conclusion Intraoperative toric IOL alignment using an image-guided system was an accurate and fast procedure resulting in precise toric IOL alignment, and the system simplified the positioning of toric IOLs. There was a slight rotation of IOLs shortly after surgery (within the first hour). |
| Databáze: | OpenAIRE |
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