Contact Lenses - Modern medicine
... It results from non-perfusion of the posterior ciliary blood supply to the optic nerve head.2 Classic symptoms of anterior ischemic optic neuropathy include sudden, painless vision loss, mild to severe vision loss, inferior altitudinal field defect, and optic disc edema, which usually resolves spont ...
... It results from non-perfusion of the posterior ciliary blood supply to the optic nerve head.2 Classic symptoms of anterior ischemic optic neuropathy include sudden, painless vision loss, mild to severe vision loss, inferior altitudinal field defect, and optic disc edema, which usually resolves spont ...
CORNEAL ULCERS (DOGS)
... after approximately 5-7 days of treatment. There appear to be some red streaks near the ulcer. Is that normal? The normal cornea has no blood vessels going through it. However, when a corneal ulcer or descemetocele occurs, the body senses a need to increase its healing capabilities. New blood vessel ...
... after approximately 5-7 days of treatment. There appear to be some red streaks near the ulcer. Is that normal? The normal cornea has no blood vessels going through it. However, when a corneal ulcer or descemetocele occurs, the body senses a need to increase its healing capabilities. New blood vessel ...
CORNEAL ULCERS What is a corneal ulcer? The cornea is the
... of treatment, your dog should be reexamined to be sure that healing is progressing properly. If that does not happen, a decision may be made to perform surgery. Are there any side-effects from the eye medications? Rarely, a dog will be allergic to an antibiotic that is instilled in the eye. If your ...
... of treatment, your dog should be reexamined to be sure that healing is progressing properly. If that does not happen, a decision may be made to perform surgery. Are there any side-effects from the eye medications? Rarely, a dog will be allergic to an antibiotic that is instilled in the eye. If your ...
Capabilities and professional highlights
... Institute believes this BHV-Artificial Tear product could revolutionise the dry eye/comfort drop market. Revolutionary treatment for presbyopia and cataract The Accommodating Gel project is developing a clear gel-lens system that will replace the old presbyopic or cataractous lens. The lens is remov ...
... Institute believes this BHV-Artificial Tear product could revolutionise the dry eye/comfort drop market. Revolutionary treatment for presbyopia and cataract The Accommodating Gel project is developing a clear gel-lens system that will replace the old presbyopic or cataractous lens. The lens is remov ...
Retinal Detachment - Retina Eye Specialists
... The retina is the photosensitive tissue in the back of the eye that gives us the ability to see by sending visual signals to the brain. The retina is attached to a layer of supporting tissue below (the retinal pigment epithelial), which keeps the retina in place and provides oxygen and nutrients to ...
... The retina is the photosensitive tissue in the back of the eye that gives us the ability to see by sending visual signals to the brain. The retina is attached to a layer of supporting tissue below (the retinal pigment epithelial), which keeps the retina in place and provides oxygen and nutrients to ...
Wavefront Ablation Profiles in Refractive Surgery
... wavefront-guided LASIK on 35 eyes were encouraging. After 3 months, 93.5% of eyes had uncorrected distance visual acuity (UDVA) of 20/20 or better, and supernormal vision, defined as 20/10 or better, was achieved in 16%. Postoperative HOAs decreased in 22.5% of eyes. However, optical aberrations incr ...
... wavefront-guided LASIK on 35 eyes were encouraging. After 3 months, 93.5% of eyes had uncorrected distance visual acuity (UDVA) of 20/20 or better, and supernormal vision, defined as 20/10 or better, was achieved in 16%. Postoperative HOAs decreased in 22.5% of eyes. However, optical aberrations incr ...
keratome try and post-operative astigmatism
... surgically induced corneal distortion. Therefore keratom etry should be a convenient method of determining large post-operative astigmatic errors. Furthermore, keratom eters are present in most units where pre-operative bio metry is performed and their use requires less skill and time than conven ...
... surgically induced corneal distortion. Therefore keratom etry should be a convenient method of determining large post-operative astigmatic errors. Furthermore, keratom eters are present in most units where pre-operative bio metry is performed and their use requires less skill and time than conven ...
Refractive Speaker Note - University of Virginia School of Medicine
... decrease light input to the retina. Patients should be aware that defects or irregularities in the iris may result in blurring or multiple images. Very large pupils may cause problems with refractive surgery patients, resulting in halos or glare. A cataract is an opacity of the crystalline lens. Cat ...
... decrease light input to the retina. Patients should be aware that defects or irregularities in the iris may result in blurring or multiple images. Very large pupils may cause problems with refractive surgery patients, resulting in halos or glare. A cataract is an opacity of the crystalline lens. Cat ...
New microwave thermokeratoplasty and accelerated crosslinking
... thermokeratoplasty as a single procedure for treatment of myopic refractive error.6 The results in the previous study showed a similar evolution after treatment; that is, an initial refractive change, strongly present at 1 month, with subsequent regression to baseline refractive and K values over ti ...
... thermokeratoplasty as a single procedure for treatment of myopic refractive error.6 The results in the previous study showed a similar evolution after treatment; that is, an initial refractive change, strongly present at 1 month, with subsequent regression to baseline refractive and K values over ti ...
ten common sense reasons why you should not have lasik
... reshape a steep sphere into a flat sphere, rather than to reshape a steep prolate into a flatter prolate. As a result, excimer lasers reshape prolate corneas into oblate ones, a shape that is optically worse because now peripheral rays are bent more powerfully, causing more pronounced spherical aber ...
... reshape a steep sphere into a flat sphere, rather than to reshape a steep prolate into a flatter prolate. As a result, excimer lasers reshape prolate corneas into oblate ones, a shape that is optically worse because now peripheral rays are bent more powerfully, causing more pronounced spherical aber ...
BV MEETING September 2007
... biometry, cover testing, and dilated fundus examination. Information on birth and medical history were obtained from a parent questionnaire. Main Outcome Measures: Moderate hyperopia defined as spherical equivalent refraction of 2D), and eye conditions including amblyopia, strabismus, astigmatism, a ...
... biometry, cover testing, and dilated fundus examination. Information on birth and medical history were obtained from a parent questionnaire. Main Outcome Measures: Moderate hyperopia defined as spherical equivalent refraction of 2D), and eye conditions including amblyopia, strabismus, astigmatism, a ...
NON-TRAUMATIC RETINAL DETACHMENT IN A 60-YEAR
... contact between the detached retina and retinal base, since surgery is the mainstay of treatment. Keywords: Ocular, ultrasonography, nontraumatic, retinal detachment All Correspondence to; ...
... contact between the detached retina and retinal base, since surgery is the mainstay of treatment. Keywords: Ocular, ultrasonography, nontraumatic, retinal detachment All Correspondence to; ...
Post-LASIK Ectasia
... simple guidelines will decrease the incidence of postLASIK ectasia. The complication will not disappear, however, until surgeons agree upon how to diagnose an “abnormal” corneal topographical pattern and/or develop some metric to quantify the biomechanical strength of an individual cornea.25-28 Curr ...
... simple guidelines will decrease the incidence of postLASIK ectasia. The complication will not disappear, however, until surgeons agree upon how to diagnose an “abnormal” corneal topographical pattern and/or develop some metric to quantify the biomechanical strength of an individual cornea.25-28 Curr ...
Comparison of Epi-LASIK and Off-Flap Epi-LASIK
... Purpose: To compare the early postoperative course and the 1-year clinical results of off-flap Epi-LASIK and Epi-LASIK for the treatment of low and moderate myopia. Design: Pilot double-masked, randomized, comparative study. Participants: Fifty-six patients (112 myopic eyes). Methods: Epithelium was ...
... Purpose: To compare the early postoperative course and the 1-year clinical results of off-flap Epi-LASIK and Epi-LASIK for the treatment of low and moderate myopia. Design: Pilot double-masked, randomized, comparative study. Participants: Fifty-six patients (112 myopic eyes). Methods: Epithelium was ...
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... name given to a progressive increase of myopia in an individual during their youth – potentially identified from around the age of five, with the prescription sometimes fluctuating until as late as around the age of 21. For myopia in general, the misplacement of the retinal image (forward of the ret ...
... name given to a progressive increase of myopia in an individual during their youth – potentially identified from around the age of five, with the prescription sometimes fluctuating until as late as around the age of 21. For myopia in general, the misplacement of the retinal image (forward of the ret ...
Model-Based Improvements in the Treatment of Patients with
... Hugonnier and Magnard4 suggested the designation “the nervous syndrome of high myopia.” Because of the muscular etiology, this was later changed to myopic myositis.5 While the term heavy-eye syndrome is descriptive of the hypotropia, it does not describe the etiology. In fact, the term is misleading ...
... Hugonnier and Magnard4 suggested the designation “the nervous syndrome of high myopia.” Because of the muscular etiology, this was later changed to myopic myositis.5 While the term heavy-eye syndrome is descriptive of the hypotropia, it does not describe the etiology. In fact, the term is misleading ...
Physicain Training slidesMay 25-3 FINAL NOV 7 2012
... reduces the EMF below the limits set by applicable standards for electromagnetic compliance. WARNING: The effects of electromagnetic emissions from the excimer laser system on other devices, such as cardiac pacemakers or implanted defibrillators, are unknown. Operation of the laser in proximity to s ...
... reduces the EMF below the limits set by applicable standards for electromagnetic compliance. WARNING: The effects of electromagnetic emissions from the excimer laser system on other devices, such as cardiac pacemakers or implanted defibrillators, are unknown. Operation of the laser in proximity to s ...
Factors associated with foveoschisis and foveal detachment
... Myopia is a highly prevalent condition, especially in Southeast Asia, with reported rates as high as 80%.1,2 A previous study in Taiwan found that the prevalence of high myopia (less than 6.0 D) at the age of 18 years was 24% in girls and 18% in boys.3 It often results in sight-threatening ocular p ...
... Myopia is a highly prevalent condition, especially in Southeast Asia, with reported rates as high as 80%.1,2 A previous study in Taiwan found that the prevalence of high myopia (less than 6.0 D) at the age of 18 years was 24% in girls and 18% in boys.3 It often results in sight-threatening ocular p ...
Stromal Rejection after Deep Anterior Lamellar Keratoplasty (DALK
... the tertiary eye care hospital from May 2014 to February 2015. 160 eyes of 80 patients with refractive errors were included in this study. Niroula et al [2] reported that distribution of myopia was found to be higher (4.05%) than the hyperopia (1.24%) and astigmatism (1.14%). Niroula et al [2] in th ...
... the tertiary eye care hospital from May 2014 to February 2015. 160 eyes of 80 patients with refractive errors were included in this study. Niroula et al [2] reported that distribution of myopia was found to be higher (4.05%) than the hyperopia (1.24%) and astigmatism (1.14%). Niroula et al [2] in th ...
DataLink statistics and clinical experience from the Crystalens HD
... smaller than the lens’ optic and may complicate the lens’ implantation. Capsulotomies larger than 6.5 mm may cause the zonules to extend into the anterior capsule. Leave as much of the anterior capsule covering the plate haptics as possible, and rotate the lens to achieve this if necessary. 6. Metic ...
... smaller than the lens’ optic and may complicate the lens’ implantation. Capsulotomies larger than 6.5 mm may cause the zonules to extend into the anterior capsule. Leave as much of the anterior capsule covering the plate haptics as possible, and rotate the lens to achieve this if necessary. 6. Metic ...
12-Month Study Results of Eyes that Underwent Standard and
... keratectomy (PRK). Careful attention to pachymetry (corneal thickness), keratometry (surface contours) and Pentacam topography (anterior and posterior elevations) are necessary to ensure the corneas are thick enough, steep enough and there is no evidence of keratoconus. Levels of myopia higher than ...
... keratectomy (PRK). Careful attention to pachymetry (corneal thickness), keratometry (surface contours) and Pentacam topography (anterior and posterior elevations) are necessary to ensure the corneas are thick enough, steep enough and there is no evidence of keratoconus. Levels of myopia higher than ...
Photorefractive keratectomy using a 213 nm wavelength solid
... reduced corneal wound healing are prone to overcorrection.21 A small optical zone can also be a contributing factor. Studies21,22 show that a small optical zone causes a lower ablation depth but results in overcorrection, regression, glare, and halos. We opted to use a smaller optical zone (5.5 mm) ...
... reduced corneal wound healing are prone to overcorrection.21 A small optical zone can also be a contributing factor. Studies21,22 show that a small optical zone causes a lower ablation depth but results in overcorrection, regression, glare, and halos. We opted to use a smaller optical zone (5.5 mm) ...
Form and Function-The CrystaLens HD_Results with the CrystaLens
... indicate that the Crystalens HD may in fact accommodate a little better after a YAG laser capsulotomy, because the movement comes from constriction of the capsule’s sides, not its center. To enhance near acuity, every 0.50 D of myopia adds one line. However, I never target more than -1.00 D with the ...
... indicate that the Crystalens HD may in fact accommodate a little better after a YAG laser capsulotomy, because the movement comes from constriction of the capsule’s sides, not its center. To enhance near acuity, every 0.50 D of myopia adds one line. However, I never target more than -1.00 D with the ...
Topcon`s Wavefront Analyzer checks both ocular
... This suggests that the refractive irregular astigmatism comes mostly from cornea, and the patient is not able to achieve fully corrected visual acuity. ...
... This suggests that the refractive irregular astigmatism comes mostly from cornea, and the patient is not able to achieve fully corrected visual acuity. ...
... Keratoconus Definition and Diagnosis Keratoconus is a non-inflammatory, progressive ectasia of the cornea. It is characterized by progressive thinning and steepening of the central cornea into a cone-like shape. As the cornea steepens and thins, the patient experiences a decrease in vision, which ca ...