A method for evaluating an ophthalmic lens for a given wearer according to a visual performance parameter includes providing wearer's data for the given wearer. The method further includes providing a visual performance parameter tolerance range for the wearer. The method further includes providing an ophthalmic lens to be evaluated, the ophthalmic lens being characterized by opto-geometrical features. The method further includes computing a value of the visual performance parameter for the lens to be evaluated on the basis of a model. The method further includes evaluating the ophthalmic lens by comparing the computed value of the visual performance parameter with the visual performance parameter tolerance range.

A computer-implemented method includes receiving a two-dimensional (2-D) side view face image of a person, identifying a bounded portion or area of the 2-D side view face image of the person as an ear region-of-interest (ROI) area showing at least a portion of an ear of the person, and processing the identified ear ROI area of the 2-D side view face image, pixel-by-pixel, through a trained fully convolutional neural network model (FCNN model) to predict a 2-D ear saddle point (ESP) location for the ear shown in the ear ROI area. The FCNN model has an image segmentation architecture.

Disclosed is a method for determining a parameter of an optical equipment including an optical lens including permanent markings and being mounted in a spectacle frame, including: positioning the optical equipment is before a pattern in a first position; positioning a portable electronic device including an image acquisition module in a second position so as to acquire an image showing together the pattern seen through at least part of the optical lenses of the optical equipment in the first position and at least part of the spectacle frame of the optical equipment in the first position; detecting the permanent marking on the optical lens using the image acquired by the image acquisition module of the portable electronic device in the second position; and determining at least one parameter of the optical equipment based on the position of the permanent marking.

It is proposed a method for defining a design of an ophthalmic tinted lens provided with a turquoise blue ophthalmic filter. It is provided at least one optical parameter value that is prescribed with reference to a clear ophthalmic lens. At least one non-null optical power value is determined from said at least one prescribed optical parameter value. At least one reduction value is obtained. At least one reduced optical power value is calculated in function of said at least one non-null optical power value and said at least one reduction value. The ophthalmic tinted lens design is defined on the basis of said at least one reduced optical power value. Methods for defining a design of a first and a second ophthalmic tinted lens are also proposed. It is also proposed a corresponding ophthalmic tinted lens.

A method for designing an eyeglass lens includes an eyeball model construction step of determining a value of a parameter of each of a plurality of optical elements, and constructing an eyeball model, an aberration acquisition step of making a light ray incident at a predetermined angle with respect to a visual axis of the eyeball model to obtain an off-axis aberration in a paracentral portion and a peripheral portion of a retina of the eyeball model by an optical simulation, an aspherical coefficient value calculation step of disposing an eyeglass lens on a front side of the eyeball model and performing the optical simulation to obtain an aspherical coefficient value acting in a direction of reducing the off-axis aberration, and an aspherical shape determination step of determining an aspherical shape of the eyeglass lens based on the aspherical coefficient value.

Eyewear can include lenses having perimeters that are customized for an intended wearer. The perimeter of the lenses can be determined based on anatomical features of the wearer's face, field of vision, or other parameters specific to that individual. A provisional lens perimeter obtained may be modified in curvature and/or size to arrive at a desired final lens perimeter, based for example on stylistic preferences or to accommodate external elements affecting the perimeter and/or curvature of the lens. Customized lenses can be fabricated based on the determined lens perimeters. The customized lenses can be assembled into completed eyewear that is customized for a wearer, for example having shapes, sizes, and designs not otherwise possible.

A device for determining a head freedom area of an optical lens adapted for a wearer looking at a specific point in a scene through the optical lens comprises at least one input adapted to obtain optical lens data representing the optical features of an optical lens, to obtain wearing data and fitting data representative of the wearing conditions and fitting parameters of the optical lens, and to obtain a specific threshold value for an optical performance criterion; and at least one processor configured for determining the head freedom area that corresponds to the head positions of the wearer that provide optical performances greater than or equal to the specific threshold value when the wearer is wearing the optical lens in given wearing conditions upon given fitting parameters and looking at the specific point in the scene through the optical lens.

The present invention relates to a method for determining at least one optical property of a visual aid (e.g. eyeglasses) for a person, the method comprising the steps of: Observation of a test pattern (T) by the person through an tunable lens (20, 21) of a virtual reality (VR) and/or augmented reality (AR) headset (2) worn by the person, the tunable lens (20, 21) being positioned in front of an eye of the person, and adjusting at least one optical property of the tunable lens (20, 21) so that the person perceives the test pattern (T) as being sharp, or adjusting at least one optical property of the tunable lens (20, 21) until a sensor device (30, 31) detects accommodation of the eye of the person to the test pattern (T).

Method for determining an ophthalmic equipment which is adapted to the characteristics of at least a given wearer, the method being implemented by a processor, the method comprising: —providing access to digital content of the wearer (S100), —analyzing the digital content of the wearer so as to extract wearer data (S200), —processing the wearer data so as to obtain a set of characteristics (S300), the set of characteristics comprising at least one category and at least one associated score, and —determining at least one component of an ophthalmic equipment based on the obtained set of characteristics (S400).

Optimizing a spectacle lens for a wearer of implanted intraocular lenses. The method includes providing individual refraction data on the at least one eye of the spectacle wearer; defining an individual eye model in which at least a shape and/or power of a cornea, in particular a corneal front surface, of a model eye, a cornea-lens distance, parameters of the lens of the model eye, and a lens-retina distance are defined as parameters of the individual eye model. Here, defining the parameters of the individual eye model takes place on the basis of data on visual acuity correction of the at least one eye having the intraocular lens and further on the basis of individual measurement values for the eye of the spectacle wearer and/or standard values and/or on the basis of the provided individual refraction data such that the model eye has the provided individual refraction data.