What … for? (Indications) | ![]()
| |||||||||
Intraocular Lenses (IOL) | IOLs are used at cataract or myopia. | |||||||||
– Anterior chamber lenses | Phakic (remaining natural lens). Refractive lenses are used for myopia, presbyopia and high hyperopia, if laser or corrective lens treatment is not done. | |||||||||
– Posterior chamber lenses | Aphakic (no lens). Used at cataract, the replacement of the natural lens. | |||||||||
Glaucoma Filtration Device | Glaucoma filtration devices are used to control intraocular pressure (IOP), at previously failed trabeculectomy, at insufficient conjunctiva, scarring and complicated glaucomas. | |||||||||
Artificial Iris/Retina | Partial or complete aniridia | |||||||||
Capsular tension ring | Cataract, a.o. | |||||||||
Special implants – Diplopia Implant – Pupil Dilator – Implants for Children | ||||||||||
Epiretinal Prosthesis | Blindness | |||||||||
Eye Prostheses | Trauma, Cancer | |||||||||
Numbers Global 19Mio 2010, 19.7Mio 2012 IOL Cataracts account for 48% of world blindness. Germany: 650.000 Cataract surgeries/year | ||||||||||
Times Recovery from the procedure is usually within 24 hours. | ||||||||||
Contraindications | behavioral | Specific job requirements (e.g. pilot, public service vehicle). Night vision important. Low change of myopia. | ||||||||
some may be relative | ||||||||||
medical | Retinitis pigmentosa. Stargardt disease. Macular diseases. Any abnormality of the optic nerv. Fuchs corneal dystrophy. Macular degeneration. Diabetes mellitus. | |||||||||
Risks | during surgery | Mechanical trauma | ||||||||
short term | No improvement, infection (0.03-0.05%), rotation of the lens, lose of vision. | |||||||||
long term | Secondary cataract (0.6%), yearly loss of 1.8% of the endothelial cells, retinal detachment, corneal swelling (0.4%). Glaucoma, Glare, Halo (FDA) | |||||||||
restrictions | Loss of accommodation, minimized with multifocal lenses (slight double vision, reduced contrast), difficulty with performing tasks like driving at night or in fog. | |||||||||
Failures | Mechanical trauma, infection, optical problems | |||||||||
Material | Intraocular Lenses | Hydrophilic (25%) acrylic, hydrophobic acrylic, hydrophilic with hydrophobic surface, PMMA | ||||||||
Light adjustable lens | Silicone + Macromers sensitive to ultraviolet light | |||||||||
Artificial Iris | – Polymer fiber meshwork (for suturing) – Fiber free | |||||||||
Capsular Tension Ring | PMMA | |||||||||
Aniridia Rings | Black pemA | |||||||||
Cornea Implants | Cornearing | Ceralloy-Titanium | ||||||||
Glaucoma Filtration Device, valved/nonvalved | Stainless steel, Acrylics | |||||||||
Epiretinal Prosthesis | Antenna, electronic case, electrode array | |||||||||
Eye Prostheses | Glass | |||||||||
Statistics | No longterm studies with appropriate numbers available. | |||||||||
Literature | – Basic | Phakic Intraocular Lenses Capsular tension ring: Tribus C et al: Indications and clinical outcome of capsular tension ring (CTR) implantation: A reviw of 9528 cataract surgeries, Clin Ophtalmol v.1(1), 2007 Mar | ||||||||
– Problems | 13.88% developed clinically relevant cataracts (with IOL, older model) Half of explantation were caused by cataract. Alio et al. Phakic intraocular lens explantation: causes in 240 cases. J Refract Surg. 2015 Jan; 31(1): 30-5. | |||||||||
– Science/Future | Light adjustable lenses | |||||||||
Medical societies | see here | |||||||||
Criticism | PMMA vs foldable lenses, Hard vs Soft | |||||||||
Selected Patient Information | EyeWiki™ | |||||||||
Register for Patients | n/a, no specific registry known In the register of the registries you can check which ones are available. | |||||||||
If your implant is not covered: The Implant-Register offers registration of implants online (fee) and you can download a printable version (free) for your personal use. | ||||||||||
Disclaimer The information and links and whatsoever shown on this page are compiled with care. However, Implant-Register can´t take any responsibility for the information given, nor their content, nor their up-to-date nature, particularly in interlinked pages. You may help us with your contribution, granting us the decision to publish or not. Be careful with conclusions for yourself, in doubt double-check and consider medical solutions are individual and have to be found with an educated medical person. |