AOA News Volume 44 Number 6 October 24 2005
... of patients belong to plans that cover our services, and Medicare recognizes our services to the full extent of our state laws. And yet, forces are at work today that could, if left unchallenged, reverse this progress in far less time than it took to achieve it. And our services would no longer be c ...
... of patients belong to plans that cover our services, and Medicare recognizes our services to the full extent of our state laws. And yet, forces are at work today that could, if left unchallenged, reverse this progress in far less time than it took to achieve it. And our services would no longer be c ...
Screening for abnormal levels of hyperopia in held refractor
... Aims—High hyperopia constitutes the majority of refractive errors in large scale visual screening at preschool ages. The authors aimed to assess the validity of the Retinomax hand held refractor to detect high hyperopia in a refractive screening performed without cycloplegia and carried out on child ...
... Aims—High hyperopia constitutes the majority of refractive errors in large scale visual screening at preschool ages. The authors aimed to assess the validity of the Retinomax hand held refractor to detect high hyperopia in a refractive screening performed without cycloplegia and carried out on child ...
Long-term Outcome of Keratolimbal Allograft with or without
... females) between January 1991 and January 1999. The last follow-up visits for all patients, for the purpose of data analysis, took place between January and April 2001. Diagnosis of LSCD was made clinically and was confirmed in 28 of 39 eyes by impression cytology showing goblet cells on the corneal ...
... females) between January 1991 and January 1999. The last follow-up visits for all patients, for the purpose of data analysis, took place between January and April 2001. Diagnosis of LSCD was made clinically and was confirmed in 28 of 39 eyes by impression cytology showing goblet cells on the corneal ...
Understanding Albinism
... nerve signals from the retina to the brain do not follow the usual nerve routes. The iris – the coloured area in ...
... nerve signals from the retina to the brain do not follow the usual nerve routes. The iris – the coloured area in ...
Understanding Albinism
... nerve signals from the retina to the brain do not follow the usual nerve routes. The iris – the coloured area in ...
... nerve signals from the retina to the brain do not follow the usual nerve routes. The iris – the coloured area in ...
Poster Session/ Cornea surgery, refractive
... (LASIK) with femtosecond laser flap creation on the retinal nerve fiber layer (RNFL) thickness and ganglion cell complex (GCC). Methods: One hundred eyes from one hundred myopic patients received uneventful bilateral LASIK were recruited. Corneal flap at superior hinge was created with femtosecond l ...
... (LASIK) with femtosecond laser flap creation on the retinal nerve fiber layer (RNFL) thickness and ganglion cell complex (GCC). Methods: One hundred eyes from one hundred myopic patients received uneventful bilateral LASIK were recruited. Corneal flap at superior hinge was created with femtosecond l ...
Optic Disc Swelling (including Papilloedema)
... Papilloedema is optic disc swelling resulting from raised ICP: it is therefore almost always bilateral. The optic nerve sheath is continuous with the subarachnoid space, so that increased ICP is transmitted to the subarachnoid space surrounding the optic nerve. The anterior end of the optic nerve st ...
... Papilloedema is optic disc swelling resulting from raised ICP: it is therefore almost always bilateral. The optic nerve sheath is continuous with the subarachnoid space, so that increased ICP is transmitted to the subarachnoid space surrounding the optic nerve. The anterior end of the optic nerve st ...
Care of the Contact Lens Patient -- Optometric Clinical Practice
... for more than 100 years, but they have achieved reasonable clinical success only in the last several decades. The original CLs were almost exclusively of large scleral or haptic design, and all were made from glass. Feinbloom made a scleral CL with glass optics and a plastic carrier in the late 1930 ...
... for more than 100 years, but they have achieved reasonable clinical success only in the last several decades. The original CLs were almost exclusively of large scleral or haptic design, and all were made from glass. Feinbloom made a scleral CL with glass optics and a plastic carrier in the late 1930 ...
Concepts in dosimetry related to laser safety and optical radiation
... exposure”. Irradiance is defined as incident power divided by the area over which the irradiance is determined. If the area to which irradiance is related to becomes infinitesimally small, the irradiance equals the local physical irradiance. For finite areas, the determined irradiance will represent ...
... exposure”. Irradiance is defined as incident power divided by the area over which the irradiance is determined. If the area to which irradiance is related to becomes infinitesimally small, the irradiance equals the local physical irradiance. For finite areas, the determined irradiance will represent ...
Breed Specific Instructions (BSI)
... breeding by avoiding to give high awards and instead merit the specimen with the optimal combination of breed type and soundness. The Breed Specific Instructions (BSI) identifie areas of risk related to breed type with the intention to increase the awareness of judges of problems related to exaggera ...
... breeding by avoiding to give high awards and instead merit the specimen with the optimal combination of breed type and soundness. The Breed Specific Instructions (BSI) identifie areas of risk related to breed type with the intention to increase the awareness of judges of problems related to exaggera ...
Lateral rectus muscle disinsertion and reattachment to lateral orbital
... Duane syndrome have shown paradoxical innervation of the lateral rectus muscle in adduction, which results in a taut lateral rectus muscle in attempted adduction. The taut lateral rectus muscle slips sideways over the globe (bridle or leash phenomenon) and produces an anomalous vertical movement of ...
... Duane syndrome have shown paradoxical innervation of the lateral rectus muscle in adduction, which results in a taut lateral rectus muscle in attempted adduction. The taut lateral rectus muscle slips sideways over the globe (bridle or leash phenomenon) and produces an anomalous vertical movement of ...
Breed Specific Instructions (BSI)
... breeding by avoiding to give high awards and instead merit the specimen with the optimal combination of breed type and soundness. The Breed Specific Instructions (BSI) identifie areas of risk related to breed type with the intention to increase the awareness of judges of problems related to exaggera ...
... breeding by avoiding to give high awards and instead merit the specimen with the optimal combination of breed type and soundness. The Breed Specific Instructions (BSI) identifie areas of risk related to breed type with the intention to increase the awareness of judges of problems related to exaggera ...
Eye essentials 5
... the visual pathway is not visible with an ophthalmoscope and, in an optometric practice, is only detectable by visual field examination. Reorganisation of the nerve fibres takes place along the entire length of the visual pathway and consequently, the shape of the resulting visual field defect can b ...
... the visual pathway is not visible with an ophthalmoscope and, in an optometric practice, is only detectable by visual field examination. Reorganisation of the nerve fibres takes place along the entire length of the visual pathway and consequently, the shape of the resulting visual field defect can b ...
Download the Summer 2006 Sightline
... cells, which in turn are involved in age-related macular degeneration. In one investigation, Dr. Zack’s group discovered a special gene that controls others, which when altered can cause retinal degeneration. By studying how this gene works, the group is gaining insight into approaches by which gene ...
... cells, which in turn are involved in age-related macular degeneration. In one investigation, Dr. Zack’s group discovered a special gene that controls others, which when altered can cause retinal degeneration. By studying how this gene works, the group is gaining insight into approaches by which gene ...
Wavefront aberrations and spectacle lenses part one
... at the various surfaces of each lens or optical element. Aberrations are then determined by calculating the distance of these refracted rays from the intended focal point. Alternatively, the deformation of the corresponding wavefront of light as it passes through the optical system may be also deter ...
... at the various surfaces of each lens or optical element. Aberrations are then determined by calculating the distance of these refracted rays from the intended focal point. Alternatively, the deformation of the corresponding wavefront of light as it passes through the optical system may be also deter ...
Changes in the Intraocular Pressure of Fellow Untreated Eyes
... This finding possibly implies that the pathophysiological mechanisms dominating such changes are also different. In the case of selective laser trabeculoplasty, humoral agents such as interleukin-1a, interleukin1b, and tumor necrosis factor-a or matrix metalloproteinases are possibly released as a r ...
... This finding possibly implies that the pathophysiological mechanisms dominating such changes are also different. In the case of selective laser trabeculoplasty, humoral agents such as interleukin-1a, interleukin1b, and tumor necrosis factor-a or matrix metalloproteinases are possibly released as a r ...
The effect of combined daunorubicin and triamcinolone
... preventing retinal detachment in experimental proliferative vitreoretinopathy. Wiedemann et al13 demonstrated that a dose of 9 nmol per eye reduced the incidence of retinal detachment in experimental proliferative vitreoretinopathy from the 75% seen in controls to 25% after 28 d, whereas doses betwe ...
... preventing retinal detachment in experimental proliferative vitreoretinopathy. Wiedemann et al13 demonstrated that a dose of 9 nmol per eye reduced the incidence of retinal detachment in experimental proliferative vitreoretinopathy from the 75% seen in controls to 25% after 28 d, whereas doses betwe ...
1 Integration of Retinal Disparity and Fixation Distance
... For the most part, we will report results obtained during the delay-period, since activity during this period should be related to visuomotor transformations (Andersen et al. 1990b, 1997). The results obtained from the analysis of the other two experimental epochs, visual and presaccadic activities, ...
... For the most part, we will report results obtained during the delay-period, since activity during this period should be related to visuomotor transformations (Andersen et al. 1990b, 1997). The results obtained from the analysis of the other two experimental epochs, visual and presaccadic activities, ...
Cataract Surgery for Greenhorns
... Pre-Operative Exam Manifest Refraction in both eyes Fellow eye refraction may be needed to help with IOL power selection Does VA with best correction decline with glare testing -- room lights on and transilluminator 45 degrees off axis through phoropter with best refraction When vision is poor ...
... Pre-Operative Exam Manifest Refraction in both eyes Fellow eye refraction may be needed to help with IOL power selection Does VA with best correction decline with glare testing -- room lights on and transilluminator 45 degrees off axis through phoropter with best refraction When vision is poor ...
Light Energy - Wallingford Public Schools
... What will need to be taught and coached, and how should it best be taught, in light of the performance goals in stage one? How will we make learning both engaging and effective, given the goals (stage 1) and needed evidence (stage 2)? Stage 3 of Understanding by Design helps teachers plan learning e ...
... What will need to be taught and coached, and how should it best be taught, in light of the performance goals in stage one? How will we make learning both engaging and effective, given the goals (stage 1) and needed evidence (stage 2)? Stage 3 of Understanding by Design helps teachers plan learning e ...
Optic Discs Mimicking Glaucoma
... Optic disc pits are found in 1 in 10,000 cases. They are unilateral and affected disc is larger in size. The pit is present in the temporal part of the disc and often the disc has a cilioretinal artery. 25 -75 % of eyes are associated with serous macular detachment and called Kranenberg’s syndrome. ...
... Optic disc pits are found in 1 in 10,000 cases. They are unilateral and affected disc is larger in size. The pit is present in the temporal part of the disc and often the disc has a cilioretinal artery. 25 -75 % of eyes are associated with serous macular detachment and called Kranenberg’s syndrome. ...
Deep anterior lamellar keratoplasty in post-laser in situ
... years.11,12 In our series of 4 patients, the earliest diagnosis of ectasia was 6 months after primary LASIK and the latest was 4 years. Keratectasia has been reported to occur more frequently after retreatments,13 as seen in the left eye of patient 4 in our study. The disruption of corneal integrity ...
... years.11,12 In our series of 4 patients, the earliest diagnosis of ectasia was 6 months after primary LASIK and the latest was 4 years. Keratectasia has been reported to occur more frequently after retreatments,13 as seen in the left eye of patient 4 in our study. The disruption of corneal integrity ...
visual field defects in optic chiasm lesions
... Bitemporal visual field defects are classically associated with optic chiasm compression. The inferonasal retinal nerve fibres cross low and anteriorly, and therefore are most vulnerable to damage from expanding sellar lesions, typically pituitary adenomas. Compression of the optic chiasm may be asy ...
... Bitemporal visual field defects are classically associated with optic chiasm compression. The inferonasal retinal nerve fibres cross low and anteriorly, and therefore are most vulnerable to damage from expanding sellar lesions, typically pituitary adenomas. Compression of the optic chiasm may be asy ...
Utilisation of ocular lubricants by patient category
... At the beginning of the time period (2003) hypromellose multi-dose preparations dominated the market with the highest number of prescriptions supplied per year, and their utilisation has gradually declined over the last ten years. Carmellose sodium preparations were the second most commonly supplie ...
... At the beginning of the time period (2003) hypromellose multi-dose preparations dominated the market with the highest number of prescriptions supplied per year, and their utilisation has gradually declined over the last ten years. Carmellose sodium preparations were the second most commonly supplie ...
Corneal Transplant, Endothelial Keratoplasty
... must be carefully positioned in the anterior chamber. An air bubble is frequently used to center the donor tissue and facilitate adhesion between the stromal side of the donor lenticule and the host posterior corneal stroma. Repositioning of the donor tissue with application of another air bubble ma ...
... must be carefully positioned in the anterior chamber. An air bubble is frequently used to center the donor tissue and facilitate adhesion between the stromal side of the donor lenticule and the host posterior corneal stroma. Repositioning of the donor tissue with application of another air bubble ma ...
Human eye
The human eye is an organ that reacts to light and has several purposes. As a sense organ, the mammalian eye allows vision. Rod and cone cells in the retina allow conscious light perception and vision including color differentiation and the perception of depth. The human eye can distinguish about 10 million colors.Similar to the eyes of other mammals, the human eye's non-image-forming photosensitive ganglion cells in the retina receive light signals which affect adjustment of the size of the pupil, regulation and suppression of the hormone melatonin and entrainment of the body clock.