|We developed the system which can estimate the face-direction of a person with two cameras using stereo vision. In this system, the eyes and the mouth are extracted in each image for measurement of their 3D position by matching the each feature in the one image with in the other. Then, face direction is obtained from the normal of the plane which is determined by the 3D coordinates of the feat...

Case Description- An eleven-year-old Golden retriever male dog (dog I) and a four-year-old neutered Toy Terrier (dog II) were referred to Small Animal Clinic. Dog I was suffered from   partial loss of vision and engorgement of episcleral vessels of his right eye and dog II was blind. Intraocular pressure (IOP) of right eye was 37.8 mmHg in dog  I  and 34.5 and 31.6 mmHg in the right and left...

introduction: until now, many models have been presented for optical study of the human eye. in recent years, surgery on the anterior section of the eye (such as cataract and photo-refractive surgery) has increased, so a study on the optics of the eye and evaluation of vision quality has become more important. material and methods: in this article, some of these models are considered. they incl...

The contrast sensitivity function of both eyes of subjects with functional amblyopia has been measured. A clinically significant difference was found between the amblyopic and the normal eye. It appears that the functionally amblyopic eye takes more information from the peripheral parts of the stimulus than does the normal eye. The sensitivity of the normal eye increases linearly with increasin...

introduction proton therapy is used to treat malignant tumors such as melanoma inside the eye. proton particles are adjusted according to various parameters such as tumor size and position and patient’s distance from the proton source. the purpose of this study was to assess absorbed doses in eyes and various tumors found in the area of sclera and choroid and the adjacent tissues in radiotherap...

1. The eye grows by the addition of new ommatidia rather than by an increase in size of existing ones. 2. New ommatidia develop as a result of induction of epidermal cells by functional ommatidia. 3. The eye has great regenerative ability, but following removal of the entire eye and the growth zone that surround it regeneration does not occur. 4. Transplanted eye cells or epidermal cells from n...

purpose: to report a case of butterfly-shaped macular dystrophy. patient and findings: a 34-year-old woman presented with metamorphopsia in both eyes from 2 years ago. visual acuity was 9/10 in right eye and 10/10 in left eye. there was no pathologic finding on slit lamp biomicroscopy and funduscopy other than mild macular retinal pigment epithelium mottling. visual fields and electroretinogram...

PURPOSE To compare the axial length (AL), anterior chamber depth (ACD) and intraocular lens power (IOLP) of IOLMaster and Ultrasound in normal, long and short eyes. METHODS Seventy-four normal eyes (≥ 22 mm and ≤ 25 mm), 74 long eyes (> 25 mm) and 78 short eyes (< 22 mm) underwent AL and ACD measurements with both devices in the order of IOLMaster followed by Ultrasound. The IOLP were calcula...

Introduction: There is insufficient information about the correlation between hearing and visual impairments. Its importance arises when trainers should care about medical issues of their clients. Refractive errors of the eye are one of the main causes of visual loss in the society. The purpose of this study was to evaluate the relationship between refractive errors in the eye (by the type of r...