摘要:
A method and system for reshaping Bowman's membrane, which lies directly below the anterior epithelial surface of the cornea, to provide correction of refractive errors in the eye by photoablation of selective regions of the Bowman's membrane without substantial penetration into the stroma of the eye is disclosed including a laser and a beam-shaping mask, disposed between the laser and the surface of the cornea, which imposes a defined ablation profile upon the Bowman's membrane by laser radiation. The system can also include a feedback control for measuring the effectiveness of the laser during operation and for controlling the laser such that the reprofiling operation is substantially confined to the Bowman's membrane throughout the procedure. The beam-shaping mask can include either an aperture e.g., a beam-shaping stop means alone or in combination with a beam-shaping window, or an mask which is erodible or otherwise graded in its absorptive capacity to present a predefined profile of resistance to the laser radiation.
摘要:
A laser system and masking apparatus for reprofiling surfaces, such as corneal surfaces. The system includes a laser and a mask disposed between the laser and the surface to be reprofiled, the mask providing a pre-defined profile of resistance to laser radiation, such that upon irradiation, part of the radiation is selectively absorbed and part is transmitted to the surface in accordance with the masked profile, to selectively erode the surface. The masking apparatus may consist of a mask to be affixed to the surface or may further include a support structure to support and position the mask above the surface. The resistance profile can be created by varying the thickness or the composition of the mask.
摘要:
An adjustable pillow comprises an outer wall, an interior cavity having a volume defined by the outer wall, a composition of fill material dispersed about and contained within the interior cavity, and a drawstring for adjusting and fixing the volume of the interior cavity. The drawstring is defined by a base end, a distal end, an interior portion, and an exterior portion. It further comprises a cinching mechanism adjustably affixed to its exterior portion. A user can manipulate the volume of the interior cavity of the adjustable pillow, and, thus, the firmness of the adjustable pillow, by altering the position of the cinching mechanism along the drawstring. The drawstring further comprises a plurality of notations that provide the user with an indication of the firmness of the adjustable pillow at various positions of the cinching mechanism along the drawstring.
摘要:
A composition which is reversible inhibitor of at least one neuron-specific PDZ domain comprising wherein R is a molecular transporter with or without a linker amino acid; R1 is at least about one amino acid covalently bound; and, R2 is isoleucine, leucine, alanine, phenylalanine, or valine, and methods of use.
摘要:
Disclosed are various embodiments for controlling distribution of data on a network. In one embodiment, a distribution service receives a request from a user on a client device to access the distribution service. In response, the distribution service determines whether the user and the client device are authorized to access the distribution service. The distribution service identifies which of the resources are accessible to the user and the client device pairing based on a plurality of resource grouping identifiers. The distribution service then determines whether the client device complies with a plurality of distribution rules associated with the identified resources. Upon determining that the client device is compliant, the distribution service transmits the resources related to the compliance.
摘要:
Embodiments apply light energy in medical treatments. To enhance or control the effect of the light energy, embodiments apply the light energy after tissue has been treated, e.g., with a photosensitizing agent. For example, embodiments may treat target tissue with riboflavin before exposure to ultraviolet light. For example, a system for cataract surgery includes a removal system configured to remove a first lens from an eye, wherein a capsular bag remains in the eye after removal of the first lens. The system includes an application system configured to treat lenticular epithelial cells in the capsular bag with the photosensitizing agent. The system includes a delivery system with a light source and an optical device. The optical device delivers light to the treated lenticular epithelial cells. Energy from the light destroys the lenticular epithelial cells in the capsular bag to reduce the growth of epithelial cells that cause posterior capsule opacification.
摘要:
In a system for stabilizing a pattern of structural changes in corneal fibrils, an eye treatment system causes corneal fibrils of a cornea of an eye to transition from a first structure to a second structure. An application device applies a cross-linking element to the corneal fibrils. An activating device applies an initiating element to the corneal fibrils and activates the cross-linking element. The cross-linking element causes cross-linking in the corneal fibrils to preserve the second structure of the corneal fibrils. Another application device may apply a cross-linking breaker to the corneal fibrils. The cross-linking breaker halts or reverses at least partially the cross-linking in the corneal fibrils. Another activating device applies an initiating element to the corneal fibrils and activates the cross-linking breaker. Advantageously, the cross-linking breaker provides greater control over the amount and progress of cross-linking that occurs in the corneal fibrils.
摘要:
Devices and approaches for activating cross-linking within corneal tissue to stabilize and strengthen the corneal tissue following an eye therapy treatment. A feedback system is provided to acquire measurements and pass feedback information to a controller. The feedback system may include an interferometer system, a corneal polarimetry system, or other configurations for monitoring cross-linking activity within the cornea. The controller is adapted to analyze the feedback information and adjust treatment to the eye based on the information. Aspects of the feedback system may also be used to monitor and diagnose features of the eye. Methods of activating cross-linking according to information provided by a feedback system in order to improve accuracy and safety of a cross-linking therapy are also provided.
摘要:
This invention discloses CN2097-like compositions that facilitate the induction of long-term potentiation (LTP). In one embodiment the method comprises inducing long-term potentiation in a subject by the method of administering a therapeutically effective dose of a CN2907-like compound.