公开(公告)号：US20140340645A1

公开(公告)日：2014-11-20

申请号：US14158924

申请日：2014-01-20

申请人： Shui T. Lai

发明人： Shui T. Lai

IPC分类号： A61B3/032

CPC分类号： A61B3/032 ,  A61B3/0025 ,  A61B3/0041 ,  A61B3/0075 ,  A61B3/028

摘要： A viewing target for a visual acuity and refraction measurement includes at least one line comprising a width dimension that is below a resolution limit width (hereinafter “RLW”) of a test subject visual acuity, and an adjustable length dimension that is initially set at greater than the RLW of the test subject visual acuity. A base, at least approximately intersecting the line, has a thickness along the direction of the length of the line that is greater than the RLW of the test subject visual acuity. The length dimension of the line is adjustable in increments small enough to effectively approximate the visual acuity of the test subject by determining a shortest resolvable line and a next smaller line that is not resolvable by the test subject.

摘要翻译： 用于视敏度和折射测量的观看目标包括至少一条线，其包括低于测试对象视敏度的分辨率极限宽度（以下称为“RLW”）的宽度尺寸，以及初始设置为更大的可调节长度尺寸 比RLW的测试对象视力。 至少大致与线相交的基座沿线长度方向的厚度大于测试对象的视力的RLW。 线的长度尺寸可以以足够小的增量进行调节，以便通过确定测试对象不能解析的最短可分解线和下一个较小的线来有效地近似测试对象的视敏度。

公开(公告)号：US08632183B2

公开(公告)日：2014-01-21

申请号：US12947694

申请日：2010-11-16

申请人： Shui T. Lai

发明人： Shui T. Lai

IPC分类号： A61B3/02 ,  A61B3/00 ,  A61B3/10

CPC分类号： A61B3/032 ,  A61B3/0025 ,  A61B3/0041 ,  A61B3/0075 ,  A61B3/028

摘要： A viewing target for a visual acuity and refraction measurement includes at least one line comprising a width dimension that is below a resolution limit width (hereinafter “RLW”) of a test subject visual acuity, and an adjustable length dimension that is initially set at greater than the RLW of the test subject visual acuity. A base, at least approximately intersecting the line, has a thickness along the direction of the length of the line that is greater than the RLW of the test subject visual acuity. The length dimension of the line is adjustable in increments small enough to effectively approximate the visual acuity of the test subject by determining a shortest resolvable line and a next smaller line that is not resolvable by the test subject.

摘要翻译： 用于视敏度和折射测量的观看目标包括至少一条线，其包括低于测试对象视敏度的分辨率极限宽度（以下称为“RLW”）的宽度尺寸，以及初始设置为更大的可调节长度尺寸 比RLW的测试对象视力。 至少大致与线相交的基座沿线长度方向的厚度大于测试对象的视力的RLW。 线的长度尺寸可以以足够小的增量进行调节，以便通过确定测试对象不能解析的最短可分解线和下一个较小的线来有效地近似测试对象的视敏度。

公开(公告)号：US20100265463A1

公开(公告)日：2010-10-21

申请号：US12763186

申请日：2010-04-19

申请人： Shui T. Lai

发明人： Shui T. Lai

IPC分类号： A61B3/032

CPC分类号： A61B3/0285

摘要： A subjective refraction technique uses a plane wave light source including substantially a point as a viewing target. The refraction method provide for a number of distinct identifiable end points. By finding such end points the process leads to an aberration-corrected vision. A defocus corrector assembly (DCA) includes a lens that is moveable along an optical axis between a patient's eye and the point light source for adjusting defocus power until the patient indicates that the blurry image has become a relatively focused line image. An astigmatism corrector assembly (ACA) which is capable of continuously variable in its amplitude is provided including a pair of astigmatism plates for adjusting astigmatism power and axis angle. The ACA is adjusted until the patient indicates that the line image has become a substantially round image. A reference marker provides displayed items including a sweep line overlapping at the point source and having an orientation which is adjustable. The patient may subjectively control the sweep angle of the sweep line and indicate that the sweep line is aligned with the sharp line image of the point source, thereby providing axis angle data of astigmatism errors of the patient's eye.

摘要翻译： 主观折射技术使用包括基本上一点作为观察目标的平面波光源。 折射方法提供了许多不同的可识别的终点。 通过找到这样的终点，该过程导致像差校正视力。 散焦校正器组件（DCA）包括可沿着患者眼睛和点光源之间的光轴移动的用于调节散焦功率的透镜，直到患者指示模糊图像已经变成相对聚焦的线图像。 提供能够在其幅度上连续变化的像散校正器组件（ACA），其包括一对用于调节散光功率和轴角度的散光板。 调整ACA直到患者指示线图像已经变成基本圆形的图像。 参考标记提供显示的项目，包括在点源处重叠的扫掠线并且具有可调整的取向。 患者可以主观地控制扫描线的扫掠角度，并指示扫描线与点源的锐利线图像对齐，从而提供患者眼睛散光误差的轴角数据。

公开(公告)号：US20090066915A1

公开(公告)日：2009-03-12

申请号：US12270779

申请日：2008-11-13

申请人： Shui T. Lai

发明人： Shui T. Lai

IPC分类号： A61B3/103 ,  A61B3/10

CPC分类号： A61B3/1035 ,  A61B3/0285 ,  A61B3/1015 ,  A61B3/103

摘要： An apparatus for determining spherical and cylinder components of subjective refraction of a patient's vision includes a wavefront measurement device that can produce a measure of quality of vision in a return beam from the patient's eye viewing a target through a corrective test lens in the apparatus. The corrective lenses may be varied and a plurality of measurements of quality of vision may be obtained and analyzed to determine the spherical and cylinder components. Accordingly, the eye examiner may conduct a refraction examination without a subjective response from the patient.

摘要翻译： 用于确定患者视力的主观折射的球面和圆柱分量的装置包括波前测量装置，其可以在来自患者眼睛的返回光束中产生视力质量的量度，所述返回光束通过装置中的校正测试透镜观察目标。 校正透镜可以变化，并且可以获得并分析多个视觉质量的测量以确定球形和圆柱体部件。 因此，眼科检查者可进行折射检查，而不进行患者的主观反应。

公开(公告)号：US06325792B1

公开(公告)日：2001-12-04

申请号：US08287000

申请日：1994-08-08

申请人： Casimir A. Swinger ,  Shui T. Lai

发明人： Casimir A. Swinger ,  Shui T. Lai

IPC分类号： A61B1736

CPC分类号： A61F9/00804 ,  A61B18/26 ,  A61B2017/00172 ,  A61B2017/00694 ,  A61F9/00827 ,  A61F9/00831 ,  A61F9/00834 ,  A61F9/009 ,  A61F2009/00846 ,  A61F2009/00863 ,  A61F2009/0087 ,  A61F2009/00872 ,  A61F2009/00874 ,  A61F2009/00897

摘要： Low energy, ultra-short (femptosecond) pulsed laser radiation is applied to the patient's eye in one of a number of patterns such that the exposed ocular tissue is ablated or excised through the process of optical breakdown or photodisruption in a very controlled fashion. The process can be gentle enough that the invention makes possible the performance of a number of surgical procedures that in the past could not have been performed at all, such as capsulorhexis, or were performed in a fashion that provided less than an ideal result or excessive trauma to the ocular tissue. Such latter applications include the making of incisions for corneal transplantation, radial and arcuate keratotomy, and intrastromal cavitation. Using the laser inside the eye allows the surgeon to perform glaucoma operations such as trabeculoplasty and iridotomy, cataract techniques such as capsulectomy, capsulorhexis and phacoablation, and vitreoretinal surgery, such as membrane resection. The various procedures are accomplished by controlling energy flux or irradiance, geometric deposition of beam exposure and exposure time.

摘要翻译： 将低能量，超短（飞秒）脉冲激光辐射以许多图案中的一种施加到患者的眼睛，使得暴露的眼组织以非常受控的方式通过光学破坏或光破坏的过程被消融或切除。 该过程可以足够温和，使得本发明使得能够执行过去无法完全执行的诸如撕囊术的多种外科手术，或者以提供小于理想结果或过度的方式进行 对眼组织的创伤。 这样的后续应用包括形成角膜移植切口，径向和弓形角膜切开术以及胸腔内气蚀。 使用眼睛内的激光允许外科医生进行青光眼手术，例如小梁成形术和虹膜切开术，白内障技术，例如囊切除术，撕囊术和超声乳化术，以及玻璃体视网膜手术，例如膜切除术。 各种过程通过控制能量通量或辐照度，束曝光和曝光时间的几何沉积来实现。

公开(公告)号：US5549632A

公开(公告)日：1996-08-27

申请号：US967253

申请日：1992-10-26

申请人： Shui T. Lai

发明人： Shui T. Lai

IPC分类号： A61B17/00 ,  A61B17/30 ,  A61F9/008 ,  A61F9/009 ,  A61F9/01 ,  A61B17/36

CPC分类号： A61F9/009 ,  A61F9/00825 ,  A61B2017/00694 ,  A61B2017/306 ,  A61F2009/00846 ,  A61F2009/00863 ,  A61F2009/0087 ,  A61F2009/00872 ,  A61F2009/00876

摘要： A method and apparatus for precisely controlling and determining the location of the interaction point of a surgical laser beam, and for controlling the shape of the cornea during ophthalmic surgery. A transparent applanator plate is placed in contact with the cornea of a patient's eye. The applanator plate creates a fixed positional frame of reference from which a laser beam control system can determine the desired point or points at which to focus the surgical laser beam. A surgical tip at the distal end of an articulated arm having flexible joints is placed in contact with the applanator plate and follows any motion of the patient's eye and directs the laser beam to the surgical tip. The applanator plate also provides a means to control the contour of the index of refraction boundary between the corneal epithelium of the patient's eye and the air.

摘要翻译： 一种用于精确控制和确定手术激光束的相互作用点的位置以及用于在眼科手术期间控制角膜的形状的方法和装置。 将透明的压扁板放置成与患者眼睛的角膜接触。 压扁板产生固定的位置参考系，激光束控制系统可从该位置参考系确定用于聚焦手术激光束的期望点或点。 在具有柔性关节的关节臂的远端处的外科尖端放置成与压扁板接触，并且跟随患者眼睛的任何运动并将激光束引导到手术末端。 扁平板还提供了一种手段来控制患者眼睛的角膜上皮与空气之间的折射边界的轮廓。

公开(公告)号：US4841530A

公开(公告)日：1989-06-20

申请号：US845215

申请日：1986-03-27

申请人： Bruce H. Chai ,  Shui T. Lai ,  Margaret N. Long

发明人： Bruce H. Chai ,  Shui T. Lai ,  Margaret N. Long

IPC分类号： H01S3/06 ,  H01S3/091 ,  H01S3/0915 ,  H01S3/094 ,  H01S3/106 ,  H01S3/16

CPC分类号： H01S3/16 ,  H01S3/091 ,  H01S3/106 ,  H01S3/1623

摘要： A broadly wavelength-tunable laser is provided which comprises as the laser medium a single crystal of MBO.sub.3 :Cr.sup.3+, where M is selected from the group of Sc, In and Lu. The laser may be operated over a broad temperature range from cryogenic temperatures to elevated temperatures. Emission is in a spectral range from red to infrared, and the laser is useful in the fields of defense, communications, isotope separation, photochemistry, etc.

摘要翻译： 提供了广泛波长可调的激光器，其包括作为激光介质的MBO3：Cr3 +的单晶，其中M选自Sc，In和Lu组。 激光可以在从低温到高温的宽温度范围内运行。 发射在红光到红外的光谱范围内，激光在防御，通信，同位素分离，光化学等领域是有用的。

公开(公告)号：US20180344151A1

公开(公告)日：2018-12-06

申请号：US15967315

申请日：2018-04-30

申请人： Shui T. Lai

发明人： Shui T. Lai

IPC分类号： A61B3/107 ,  A61F9/008

CPC分类号： A61B3/107 ,  A61F9/00829 ,  A61F2009/00872 ,  A61F2009/0088 ,  A61F2009/00897

摘要： A method of correcting wavefront aberrations of an eye includes determining a high precision conventional intrastromal corneal ablation profile based on a direct removal of the intrastromal corneal tissue. An expanded ablation volume profile is constructed based on the direct tissue removal profile and the expanded tissue volume is to be ablated instead to correct to the wavefront aberrations. The thickness of the ablated profile of a conventional ablation profile is expanded by an expansion factor (Nc−1)/(Nm−Nc), Nc is the index of refraction of the cornea and Nm the index of fill material. An expanded ablation volume filled with the fill material produces the effect of correcting wavefront aberrations as if a much smaller tissue volume were ablated without the fill material.

公开(公告)号：US09955867B2

公开(公告)日：2018-05-01

申请号：US11829027

申请日：2007-07-26

申请人： Shui T. Lai

发明人： Shui T. Lai

IPC分类号： A61F9/008 ,  A61B3/107

CPC分类号： A61B3/107 ,  A61F9/00829 ,  A61F2009/00872 ,  A61F2009/0088 ,  A61F2009/00897

摘要： A method of correcting wavefront aberrations of an eye includes determining a high precision conventional intrastromal corneal ablation profile based on a direct removal of the intrastromal corneal tissue. An expanded ablation volume profile is constructed based on the direct tissue removal profile and the expanded tissue volume is to be ablated instead to correct to the wavefront aberrations. The thickness of the ablated profile of a conventional ablation profile is expanded by an expansion factor (Nc−1)/(Nm−Nc), Nc is the index of refraction of the cornea and Nm the index of fill material. An expanded ablation volume filled with the fill material produces the effect of correcting wavefront aberrations as if a much smaller tissue volume were ablated without the fill material.

公开(公告)号：US08366274B2

公开(公告)日：2013-02-05

申请号：US12763186

申请日：2010-04-19

申请人： Shui T. Lai

发明人： Shui T. Lai

IPC分类号： A61B3/02 ,  A61B3/00

CPC分类号： A61B3/0285

摘要： A subjective refraction technique uses a plane wave light source including substantially a point as a viewing target. The refraction method provide for a number of distinct identifiable end points. By finding such end points the process leads to an aberration-corrected vision. A defocus corrector assembly (DCA) includes a lens that is moveable along an optical axis between a patient's eye and the point light source for adjusting defocus power until the patient indicates that the blurry image has become a relatively focused line image. An astigmatism corrector assembly (ACA) which is capable of continuously variable in its amplitude is provided including a pair of astigmatism plates for adjusting astigmatism power and axis angle. The ACA is adjusted until the patient indicates that the line image has become a substantially round image. A reference marker provides displayed items including a sweep line overlapping at the point source and having an orientation which is adjustable. The patient may subjectively control the sweep angle of the sweep line and indicate that the sweep line is aligned with the sharp line image of the point source, thereby providing axis angle data of astigmatism errors of the patient's eye.

摘要翻译： 主观折射技术使用包括基本上一点作为观察目标的平面波光源。 折射方法提供了许多不同的可识别的终点。 通过找到这样的终点，该过程导致像差校正视力。 散焦校正器组件（DCA）包括可沿着患者眼睛和点光源之间的光轴移动的用于调节散焦功率的透镜，直到患者指示模糊图像已经变成相对聚焦的线图像。 提供能够在其幅度上连续变化的像散校正器组件（ACA），其包括一对用于调节散光功率和轴角度的散光板。 调整ACA直到患者指示线图像已经变成基本圆形的图像。 参考标记提供显示的项目，包括在点源处重叠的扫掠线并且具有可调整的取向。 患者可以主观地控制扫描线的扫掠角度，并指示扫描线与点源的锐利线图像对齐，从而提供患者眼睛散光误差的轴角数据。