摘要:
Methods and apparatus treat the lens capsule so as to increase accommodation of the eye. The treatment of the lens capsule may comprise treating a portion of the lens capsule so as to stiffen the treated portion and improve accommodation of the eye. The intermediate portion of the lens capsule may located between an optically used central portion of the lens capsule and a peripheral portion of the lens capsule connected to zonules of the eye. The stiffened intermediate portion of the lens capsule can improve coupling of the peripheral portion of the lens capsule to the central portion of the lens capsule, such that an amount of accommodation of the optically used central portion of the lens is increased. As the force of the lens capsule to a lens disposed within the lens capsule is increased, the lens may comprise the natural lens of the eye or an artificial lens such as an accommodative IOL. The treatment of the eye to stiffen the intermediate portion may comprise application of one or more of an energy or a substance to the intermediate portion.
摘要:
System and method for making incisions in eye tissue at different depths. The system and method focuses light, possibly in a pattern, at various focal points which are at various depths within the eye tissue. A segmented lens can be used to create multiple focal points simultaneously. Optimal incisions can be achieved by sequentially or simultaneously focusing lights at different depths, creating an expanded column of plasma, and creating a beam with an elongated waist.
摘要:
Provided herein are methods for non-invasive ophthalmic surgery based on femto second multi shooting (FSMS) laser techniques. In one embodiment the FSMS laser technique is directed to corneal stroma. In another embodiment the FSMS laser technique is directed to crystalline lens.
摘要:
An apparatus, such as lenses, a system and a method for providing custom ocular aberrations that provide higher visual acuity. The apparatus, system and method include inducing rotationally symmetric aberrations along with an add power in one eye and inducing non-rotationally symmetric aberrations along with an add power in the other eye to provide improved visual acuity at an intermediate distance.
摘要:
Wavefront measurements of eyes are typically taken when the pupil is in a first configuration in an evaluation context. The results can be represented by a set of basis function coefficients. Prescriptive treatments are often applied in a treatment context, which is different from the evaluation context. Hence, the patient pupil can be in a different, second configuration, during treatment. Systems and methods are provided for determining a transformed set of basis function coefficients, based on a difference between the first and second configurations, which can be used to establish the vision treatment.
摘要:
Devices, systems, and methods for developing prescriptions for and/or treating presbyopia may use a combination of an alteration to the refractive tissues of the eye with changes in the response of the visual system. The visual system response may include using residual accommodation in a manner similar to that employed by latent hyperopes, a trained response of the pupil, trained psychophysics, or the like. Associated refractive prescriptions may be tailored to take advantage of the subsequent visual system response so as to mitigate presbyopia.
摘要:
A method of generating a computer program for control of an apparatus for photorefractive treatment of presbyopia by ablation of corneal tissue or a contact lens, comprising the following steps: (a) electing an eye model, (b) measuring the pupil diameter of the patient at far distance mesopically and at short distance photopically, (c) selecting wanted short and far distances regarding optimum sight, (d) calculating a global optimum regarding curvature (1/R) and asphericity (Q) of the cornea on the basis of the results obtained in steps (a) (b) and (c) by means of optical ray tracing and minimal spot diameter at the retina, and (e) deriving the computer program in accordance with the results of step (d). Alternatively step (d) includes determining a central steep island with a diameter in the range of 2 to 4 millimeters at the cornea and calculating a curvature and asphericity in the rest of the cornea.
摘要:
Die Erfindung betrifft eine Vorrichtung (1) zur präzisen Bearbeitung von Material (90), insbesondere organischem Material, umfassend ein gepulstes Lasersystem (10) mit einer Strahlquelle (15), wobei ein cavity-dumped fs-Oszillator (11) als Strahlquelle vorgesehen ist.