In some examples, a laser-based ophthalmological surgical system (hereinafter “system”) includes a therapeutic radiation source configured to emit therapeutic radiation with a first wavelength. The system may also include a probe radiation source configured to emit probe radiation with a second wavelength different than the first wavelength. The system may also include one or more optical elements configured to direct the therapeutic radiation and the probe radiation into an eye of a patient and to collect reflected probe radiation from the eye of the patient. The reflected probe radiation may be indicative of an amount of therapeutic radiation exposure of the eye of the patient. The system may also include a photodetector configured to receive the reflected probe radiation from the one or more optical elements and to generate a photocurrent indicative of the amount of therapeutic radiation exposure of the eye of the patient.

A corneal ablation system for correcting vision by using a laser is provided. The corneal ablation system includes: an operation device for creating an integrated corneal ablation plan for correcting a shape and a curvature error of a cornea based on corneal status data; a laser control unit for controlling a laser module according to an ablation position and an ablation shape of the cornea based on the integrated corneal ablation plan transmitted from the operation device; and the laser module for generating a laser and transmitting the laser to an optical unit under control of the laser control unit.

Methods for treating presbyopia in a patient's eye involve inducing spherical aberration in a central area of the pupil. In embodiments, refractive properties of an eye are measured to obtain a baseline refractive correction. A lens for wearing on the eye is provided, or an optical device is implanted in the eye, or corneal tissue is removed to create spherical aberration or a distribution of spherical aberrations beyond the baseline refractive correction in the central area of the pupil. The central area of the pupil has a diameter of between 1.5 mm and 4.0 mm and has negligible spherical aberration without the treatment.

Methods for treating presbyopia in a patient's eye involve inducing spherical aberration in a central area of the pupil. In embodiments, refractive properties of an eye are measured to obtain a baseline refractive correction. A lens for wearing on the eye is provided to create spherical aberration or a distribution of spherical aberrations beyond the baseline refractive correction in the central area of the pupil. The central area of the pupil has a diameter of between 1.5 mm and 4.0 mm and has negligible spherical aberration without the treatment.

In some examples, a laser-based ophthalmological surgical system (hereinafter “system”) includes a therapeutic radiation source configured to emit therapeutic radiation with a first wavelength. The system may also include a probe radiation source configured to emit probe radiation with a second wavelength different than the first wavelength. The system may also include one or more optical elements configured to direct the therapeutic radiation and the probe radiation into an eye of a patient and to collect reflected probe radiation from the eye of the patient. The reflected probe radiation may be indicative of an amount of therapeutic radiation exposure of the eye of the patient. The system may also include a photodetector configured to receive the reflected probe radiation from the one or more optical elements and to generate a photocurrent indicative of the amount of therapeutic radiation exposure of the eye of the patient.

According to certain embodiments, an ophthalmic surgical system for treating presbyopia comprises controllable components and a computer. The controllable components comprise a light source that generates a light beam and a scanner that directs a focal point of the light beam. The computer determines an ablation profile to remove tissue from a central region and a peripheral region of a cornea of a first eye of a pair of eyes. The ablation profile is designed to remove tissue from the central region to yield a protrusion to provide for near-vision, and to remove tissue from the peripheral region to correct to emmetropia.

Embodiments of this invention generally relate to ophthalmic laser procedures and, more particularly, to systems and methods for photorefractive keratectomy. In an embodiment, an ophthalmic surgical laser system comprises a laser source generating a pulsed laser beam and a laser delivery system delivering the pulsed laser beam to a cornea of an eye. A patient interface couples to and constrains the eye relative to the laser delivery system. A controller controls the laser delivery system to perform an anterior surface volume dissection on the cornea.

Systems and methods for increasing the amplitude of accommodation of an eye, changing the refractive power of lens material of a natural crystalline lens of the eye, and addressing presbyopia are is provided. Generally, there are provided methods and systems for delivering a laser beam to a lens of an eye in a plurality of laser shots, which are in precise and predetermined patterns results in the weakening of the lens material.

Methods and systems for correcting presbyopia using a surgical excimer laser include activating the laser once and transmitting a pre-defined three dimensional ablation profile to treat presbyopia based on the single activating step.

A method for determining spherical aberration parameters for a corneal laser treatment to treat presbyopia may include performing pupillometry to measure various actual pupil diameters of a patient from a photopic diameter to a mesopic diameter. An actual pupil center of the patient may also be measured. The measured pupil diameters and the pupil center may be used to customize the spherical aberration parameters to the eye of the patient for improved ocular results after treatment.