摘要:
An example ophthalmic device includes first, second, and third optical elements arranged in a stack, with each optical element including alignment and separation features. The alignment and separation features may form a reservoir region and a dam region. The reservoir region may provide radial alignment to the first, second, and third optical elements such that an optical axis of each optical element is aligned, and the reservoir region may have a reservoir region gap formed between adjacent ones of the optical elements. The dam region, disposed radially outside of the reservoir region, may include a first dam formed due to the first and second optical elements being in contact, and a second dam formed due to the second and third optical elements being in contact, wherein the dam region determines a reservoir region gap width.
摘要:
Une lentille intraoculaire adaptée pour être montée dans un œil, ladite lentille comportant au moins une face arrière adaptée pour être dirigée vers la rétine et une face avant adaptée pour être tournée vers la cornée. La face avant comprend au moins une surface optique avant comportant des premières asphéricités définissant une fonction de transfert de modulation en fonction de l'erreur de focalisation (FTM 11 ), pour une fréquence spatiale de 30 cycles par millimètre, qui est asymétrique. La face arrière comprend au moins une surface optique arrière comportant des deuxièmes asphéricités définissant une fonction de transfert de modulation en fonction de l'erreur de focalisation (FTM 12 ), pour une fréquence spatiale de 30 cycles par millimètre, qui est asymétrique et opposée à celle de la surface optique avant de manière à ce que la lentille possède une profondeur de champ étendue.
摘要:
A powered case is provided that includes a case, configured to hold an electroactive medical device with an integrated battery; an energizing system, configured to provide electric energy; and an energy transfer system, configured to receive energy from the energizing system; and to transfer the received energy to the integrated battery of the electroactive medical device. Further, a medical device system is provided that can include an electroactive medical device, including an integrated battery; and a powered case, including a case, configured to hold the electroactive medical device with the integrated battery; an energizing system, configured to provide electric energy; and an energy transfer system, configured to receive energy from the energizing system; and to transfer the received energy to the integrated battery of the electroactive medical device.
摘要:
본 발명은 진대의 운동을 효과적으로 전달하여 안구내렌즈의 성능을 향상시킬 수 있는 안구내렌즈 지지체를 개시한다. 본 발명은 안구 내에 삽입되는 안구내 렌즈 조립체로서, 상기 안구의 캡슐러색 내부에 삽입되는 링 형상으로 이루어지고, 상기 캡슐러색과 접촉되는 외주면(11)은 상기 캡슐러색의 전면부에 접촉되는 제1 전면 접촉부(11a)와, 상기 캡슐러색의 후면부에 접촉되는 제1 후면 접촉부(11b)를 포함하고, 상기 외주면(11)에 대향되는 내주면(12)은 상기 제1 전면 접촉부(11a)에 대향되는 제2 전면 접촉부(12a)와, 상기 제1 후면 접촉부(11b)에 대향되는 제2 후면 접촉부(12b)를 포함하는 안구내렌즈 지지체(10);와, 상기 제2 전면 접촉부(12a)의 적어도 일구간에 접촉되는 제3 전면 접촉부(52a)와, 상기 제2 후면 접촉부(12b)의 적어도 일구간에 접촉되는 제3 후면 접촉부(52b)와, 상기 제3 전면 접촉부(52a)와 상기 제3 후면 접촉부(52b) 사이에 구비되어 상기 내주면(12)과 이격되는 공간을 형성하는 변형촉진홈(52c)을 포함하는 연결수단(50);와, 상기 연결수단(50)에 연결되는 안구내 렌즈(30);로 구성됨으로써, 진대의 운동을 안구내렌즈까지의 원활하게 전달시키는 것이다.
摘要:
Artificial lenses and methods for optimizing vision in an eye of a patient comprising the steps of determining a target optical configuration including the optimum defocus and aberrations that the patients' eye should have in order to match or approximate the original optical configuration of the patient; determining the refractive change of the patient's eye required to achieve the optical configuration best corresponding to target optical configuration for the patient; and implementing the selected refractive change to achieve the target optical configuration.
摘要:
Systems and methods are provided for improving overall vision in patients suffering from a loss of vision in a portion of the retina (e.g., loss of central vision) by providing symmetric or asymmetric optic with aspheric surface which redirects and/or focuses light incident on the eye at oblique angles onto a peripheral retinal location. The intraocular lens can include a redirection element (e.g., a prism, a diffractive element, or an optical component with a decentered GRIN profile) configured to direct incident light along a deflected optical axis and to focus an image at a location on the peripheral retina. Optical properties of the intraocular lens can be configured to improve or reduce peripheral errors at the location on the peripheral retina. One or more surfaces of the intraocular lens can be a toric surface, a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike surface to reduce optical errors in an image produced at a peripheral retinal location by light incident at oblique angles.
摘要:
An intraocular lens system comprising: an anterior light-converging intraocular lens (16) for positioning within the eye, the anterior lens having an anterior surface and a posterior surface; and a posterior light-diverging intraocular lens (17) for positioning within the eye posterior to the anterior lens, the posterior lens having an anterior surface and a posterior surface; wherein the posterior lens is separate to the anterior lens; and wherein at least one of the surfaces of the anterior lens or surfaces of the posterior lens is a modified surface which includes a surface aberration which increases the depth of focus of the lens, optimises image quality and may also provide for a magnified image over a range of retinal eccentricities.
摘要:
An accommodating intraocular lens (IOL) comprises an anterior lens, a posterior surface and an articulating member joining the anterior lens and the posterior surface to define an enclosed cavity. The articulating member comprises anterior and posterior arms coupling the anterior lens and the posterior surface, respectively. The articulating member further comprising a peripheral portion. A posterior flex region is disposed about the posterior arm and at a distance from the peripheral portion. The posterior flex region permits the flexible posterior surface to articulate relative to the posterior arm, to decrease the radius of curvature of the posterior surface as the peripheral portions on opposing sides of the IOC move toward one another in a first state and to increase the radius of curvature of the posterior surface as the peripheral portions on opposite sides of the IOC move away from one another in a second state.
摘要:
Die vorliegende Erfindung betrifft eine Intraokularlinse, insbesondere eine Ziliarintraokularlinse mit mindestens einer Optik und einer Haptik. Um eine Intraokularlinse zu schaffen, die eine symmetrische Verformung einer oder mehrerer Optiken der Intraokularlinse sowie eine relative Verschiebung dieser Optiken auf ihrer optischen Achse zueinander ermöglicht, so dass eine ausreichende Brechkraftänderung erzielt wird, wird vorgeschlagen, dass die Haptik aus mehreren Haptikelementen besteht, die vorzugsweise äquiangular mit der Optik verbunden sind, wobei a) die Haptikelemente einen in einer Draufsicht im Wesentlichen trapezförmigen Teilbereich besitzen und die Basen zweier benachbarter Haptikelemente am Übergang zu der Optik miteinander verbunden sind und b) die Haptikelemente an der der Optik abgewandten Seite der trapezförmigen Teilbereiche je ein teilringförmiges Haptikringsegment besitzen, wobei die Haptikringsegmente zweier benachbarter Haptikelemente im unbelasteten Zustand geringfügig voneinander beabstandet sind. Ferner wird ein Verfahren zur Implantation einer Intraokularlinse mit mindestens einer Optik und einer Haptik sowie einer Füllung beansprucht. Erfindungsgemäß wird die Intraokularlinse zur Verkleinerung des Volumens zusammengefaltet oder -gerollt, so dass die Füllung zumindest teilweise in einem oder gegebenenfalls mehreren Reservoiren angeordnet ist und die Füllung nach der Implantation zumindest teilweise aus dem Reservoir in den Hohlraum gedrückt wird.
摘要:
An implantable intraocular lens and methods of manufacturing them provide a target degree of optical accommodation. In various embodiments, the lens includes at least one internal optic, an outer shell for enclosing at least a portion of the internal optic, and a fluid at least partially filling the outer shell.