What is a phoroptor?
Phoroptor is an instrument used by eye care experts to measure the patient's refractive errors to determine the glasses. Phoroptors can also be used to perform other measurements, such as Forie or the natural resting position of the eye, and the amplitude of accommodation (AA), the ability to concentrate on the distance. The eye care professional uses a Foroptor to measure the patient's refractive error by looking for an eye graph through the Foropttor, adjusting the FROPTORA settings, and asking the patient that provides the best vision. The Phoroptor is equipped with a number of lenses that refract light images and focus on the patient's retina. Once the lenses are modified, the degree of correction necessary to solve the patient's refractive errors can be determined. The optical force of the lens in the foroptor or the degree to which light is closer, the IS measured in very small increments, 0.25 dioptres to determine the precise regulation of the glasses. All three can be measured by a foroptor. Each eye is different, even in a single patient, so for each eye, separate measurements must be made. Therefore, a typical regulation of glasses consists of six different measurements.
spherical force indicates the ability of the eye to focus on the retina light. If the spherical force is too high for the length of the eyeball, the patient will be myopic or short -sighted. If the spherical force is too low to the length of the eyeball, the patient will have hyperopia or foresight. For measurement of astigmatism are used cylindrical force and axis, blurred vision due to the inability of the eye to focus on the images on the retina.
Phoroptor can also be used to analyze binocular vision or the way both eyes cooperate on the focus of images. Phoroptors are usually equipped with prisms to observe and analyze foria and binocular vision. Phoroptor can measure vertical and horizontal vergence, simultaneous movement of both eyes in opposite directions - towards each other or from each other - to focus oncloser or other objects. Therefore, the foroptors can also be used to treat orthoptic problems or defects in eye movement.