- Ophthalmology
... inhibit fibroblast function were postulated to be useful in the treatment and prevention of post-excimer laser surgery corneal scar formation. Mitomycin-C is a chemotherapeutic antibiotic isolated from Streptomyces caespitosus and is a noncell-cycle-specific alkylating agent. Mitomycin-C covalently bi ...
... inhibit fibroblast function were postulated to be useful in the treatment and prevention of post-excimer laser surgery corneal scar formation. Mitomycin-C is a chemotherapeutic antibiotic isolated from Streptomyces caespitosus and is a noncell-cycle-specific alkylating agent. Mitomycin-C covalently bi ...
Myopia and Myopia Control: Options and Outlooks
... myopic progression for the group as whole; however, they were not masked to the treatment protocol.62 Another larger study, in which the researchers were masked, looked at children of similar ethnicity and saw no effect from progressive spectacles.63 The Correction of Myopia Evaluation Trial (COMET) ...
... myopic progression for the group as whole; however, they were not masked to the treatment protocol.62 Another larger study, in which the researchers were masked, looked at children of similar ethnicity and saw no effect from progressive spectacles.63 The Correction of Myopia Evaluation Trial (COMET) ...
The Definition and Classification of Dry Eye Disease
... rate increases the blink interval and increases the period of evaporative loss between each blink.29 Similarly, the natural height of the palpebral aperture in the primary position varies between individuals and between ethnic groups.30 The aperture is also wider in upgaze than downgaze.31 Evaporati ...
... rate increases the blink interval and increases the period of evaporative loss between each blink.29 Similarly, the natural height of the palpebral aperture in the primary position varies between individuals and between ethnic groups.30 The aperture is also wider in upgaze than downgaze.31 Evaporati ...
Cone Dystrophy - Kellogg Eye Center
... typically have cone dysfunction from birth, and so the visual symptoms mentioned above are usually noticed early in childhood and are not expected to worsen over the person’s lifetime. People with progressive cone dystrophy experience a worsening of cone function over time. Progression usually occu ...
... typically have cone dysfunction from birth, and so the visual symptoms mentioned above are usually noticed early in childhood and are not expected to worsen over the person’s lifetime. People with progressive cone dystrophy experience a worsening of cone function over time. Progression usually occu ...
Understanding Nystagmus: Diagnosis, Related Disorders
... Diagnosis of waveforms is possible in infancy: 6 months of age or less Correlation with vision ...
... Diagnosis of waveforms is possible in infancy: 6 months of age or less Correlation with vision ...
Cataract Extraction-Second Eye
... • Cataract surgery is indicated when there is a complaint of blurred vision and meaningful functional impairment due to cataract. When the best corrected visual acuity is 20/50 or worse due to cataract, then functional impairment will be assumed. • Surgery should not be performed in both eyes at the ...
... • Cataract surgery is indicated when there is a complaint of blurred vision and meaningful functional impairment due to cataract. When the best corrected visual acuity is 20/50 or worse due to cataract, then functional impairment will be assumed. • Surgery should not be performed in both eyes at the ...
The child, measles and the eye - Measles and Rubella Initiative
... been exposed to measles virus in the early years of Iife. Early age of measles infection, protein-energy malnutrition and high levels of measles virus exposure are associated with a high risk of complications and mortality. There is a saying: "Count your children after measles." Some mothers do not ...
... been exposed to measles virus in the early years of Iife. Early age of measles infection, protein-energy malnutrition and high levels of measles virus exposure are associated with a high risk of complications and mortality. There is a saying: "Count your children after measles." Some mothers do not ...
strategy - University of Houston College of Optometry
... undercorrected by 0.50e0.75 D only a small part of the retina will experience myopic defocus and only during distance fixation. For fixation distances inside 1 m, it is likely that the foveal image will be in good focus and the eye will experience peripheral hyperopia. Even if the eye does not exhibit ...
... undercorrected by 0.50e0.75 D only a small part of the retina will experience myopic defocus and only during distance fixation. For fixation distances inside 1 m, it is likely that the foveal image will be in good focus and the eye will experience peripheral hyperopia. Even if the eye does not exhibit ...
Freeman May 2012 - American Optometric Association
... in hand. That said, however, we should be cognizant that “… even when neurological disease is not present there is a progressive and gradual loss of some intellectual functions that become evident starting from the seventh or eight decade of life and increasingly evident after the ninth decade.”3 Wi ...
... in hand. That said, however, we should be cognizant that “… even when neurological disease is not present there is a progressive and gradual loss of some intellectual functions that become evident starting from the seventh or eight decade of life and increasingly evident after the ninth decade.”3 Wi ...
The Tear Film
... Secreted mucins move easily over the mucins composing the glycocalyx because of the repulsive forces between them, which result from their anionic character. 7 Secretory mucins act as a “cleaning crew,” moving through the tear fluid and collecting debris that can then be removed via the nasolacrimal ...
... Secreted mucins move easily over the mucins composing the glycocalyx because of the repulsive forces between them, which result from their anionic character. 7 Secretory mucins act as a “cleaning crew,” moving through the tear fluid and collecting debris that can then be removed via the nasolacrimal ...
Intra-ocular Pressure
... – 4. Blinking - raises IOP briefly – 5. Exercise - decreases IOP – 6. Blepharospasm - increases IOP – 7. Coughing - increases IOP – 8. Blood pressure - some people believe there is a link between blood pressure and IOP but no clear evidence – 9. General anesthesia - decrease IOP – 10. Alcohol - decr ...
... – 4. Blinking - raises IOP briefly – 5. Exercise - decreases IOP – 6. Blepharospasm - increases IOP – 7. Coughing - increases IOP – 8. Blood pressure - some people believe there is a link between blood pressure and IOP but no clear evidence – 9. General anesthesia - decrease IOP – 10. Alcohol - decr ...
common minimum optometry curriculum for india
... the Common Minimum Optometry Curriculum for India to you all. It was on January 25th 2008, the team of like minded people came together at Elite School of Optometry, Chennai to initiate the much needed Common Minimum Optometry Curriculum for India. Since then every three months the team met in diffe ...
... the Common Minimum Optometry Curriculum for India to you all. It was on January 25th 2008, the team of like minded people came together at Elite School of Optometry, Chennai to initiate the much needed Common Minimum Optometry Curriculum for India. Since then every three months the team met in diffe ...
Correction of Presbyopia - Centre for Contact Lens Research
... Fitting GP multifocals can seem overwhelming, but do not let that deter you; you can learn how to fit GP multifocals with ease, particularly in light of the advances offered by today’s GP multifocal technology. ...
... Fitting GP multifocals can seem overwhelming, but do not let that deter you; you can learn how to fit GP multifocals with ease, particularly in light of the advances offered by today’s GP multifocal technology. ...
Ocular Surface Disorders - American Optometric Association
... primary eye and vision care to a significant portion of the American population and are often the first health care practitioners to diagnose an ocular surface disorder. The ocular surface is a delicate structure. Its proper functioning is dependent on a number of systems that contribute to its phys ...
... primary eye and vision care to a significant portion of the American population and are often the first health care practitioners to diagnose an ocular surface disorder. The ocular surface is a delicate structure. Its proper functioning is dependent on a number of systems that contribute to its phys ...
Progressive myopia: an update
... were two to three times more likely to be myopic compared to those performing low near work and high outdoor activities.15 Dirani et al. found a significant negative association between myopia and outdoor activity.16 For each hour increase in outdoor activity per day, spherical equivalent (SE) increa ...
... were two to three times more likely to be myopic compared to those performing low near work and high outdoor activities.15 Dirani et al. found a significant negative association between myopia and outdoor activity.16 For each hour increase in outdoor activity per day, spherical equivalent (SE) increa ...
Role of Conjunctival Inflammation in Surgical Outcome After
... Correlation of surgical outcome with postoperative conjunctival inflammation is shown in Figure 3. During the follow-up of 29.6 6 17.2 months (range, 6–56 months) after surgery, no recurrence was noted in 16 eyes without conjunctival inflammation; all showed grade 1 or 2 outcomes (Figs. 4A–C). On th ...
... Correlation of surgical outcome with postoperative conjunctival inflammation is shown in Figure 3. During the follow-up of 29.6 6 17.2 months (range, 6–56 months) after surgery, no recurrence was noted in 16 eyes without conjunctival inflammation; all showed grade 1 or 2 outcomes (Figs. 4A–C). On th ...
Vision Screening Guidelines
... most states for vision screening of preschool children, only 21% of preschool children are actually screened for vision problems and it is estimated that nearly 25% of school-age children have vision problems. It has been estimated that as much as 80% of what a person learns during the first 12 year ...
... most states for vision screening of preschool children, only 21% of preschool children are actually screened for vision problems and it is estimated that nearly 25% of school-age children have vision problems. It has been estimated that as much as 80% of what a person learns during the first 12 year ...
adjustable focus eyewear - the General Optical Council
... Potential harm to the consumer? There is no evidence that any long-term damage to vision or health occurs from using eyeglasses with refractive powers that do not provide the sharpest focus for a particular task. Consumers routinely use OTC reading eyeglasses or out-of-date prescription eyeglasses w ...
... Potential harm to the consumer? There is no evidence that any long-term damage to vision or health occurs from using eyeglasses with refractive powers that do not provide the sharpest focus for a particular task. Consumers routinely use OTC reading eyeglasses or out-of-date prescription eyeglasses w ...
Assessment of the tear Film - Johnson and Johnson Vision Care
... the ‘transparent’ tears with fluorescein to assist with observing and viewing the dyed tear film under cobalt blue light. Additional use of a yellow ‘Wratten’ filter further improves observation of any fluorescence. The dye is usually applied by wetting a fluorescein-impregnated strip with saline, t ...
... the ‘transparent’ tears with fluorescein to assist with observing and viewing the dyed tear film under cobalt blue light. Additional use of a yellow ‘Wratten’ filter further improves observation of any fluorescence. The dye is usually applied by wetting a fluorescein-impregnated strip with saline, t ...
Eye Position Prospectus Prospectus for measuring eye movements
... that is an integral part of target tracking and localization in the young infant. Two methods will be used for head movements. First, EMG will be recorded bi-laterally on a muscle pair responsible for initiating head movements. EMG will be recorded to identify the initiation of the head movement, wh ...
... that is an integral part of target tracking and localization in the young infant. Two methods will be used for head movements. First, EMG will be recorded bi-laterally on a muscle pair responsible for initiating head movements. EMG will be recorded to identify the initiation of the head movement, wh ...
Anisometropia
... Vertical differential prism and prism adaptation is usually not an issue with single vision lenses as the patient will simply move his/her head in order to look through the optical centres of the lenses. There is, of course, no prismatic effect at the optical centre of a lens. However, vertical diff ...
... Vertical differential prism and prism adaptation is usually not an issue with single vision lenses as the patient will simply move his/her head in order to look through the optical centres of the lenses. There is, of course, no prismatic effect at the optical centre of a lens. However, vertical diff ...
THE CORNEA IN MEASLES
... In tropical countries childhood morbidity and mortality are considerable. Measles is not the only disease severely afflicting the under-fives in underpriviliged conditions. It shares its bad reputation with malaria, pneumonia, gastro-enteritis, whooping cough and tuberculosis. But still, of these di ...
... In tropical countries childhood morbidity and mortality are considerable. Measles is not the only disease severely afflicting the under-fives in underpriviliged conditions. It shares its bad reputation with malaria, pneumonia, gastro-enteritis, whooping cough and tuberculosis. But still, of these di ...
Goldmann Tonometer IFU - Haag
... Store packaging material carefully, so that it can be used for possible returns or when moving. ...
... Store packaging material carefully, so that it can be used for possible returns or when moving. ...
Clinical results of arcuate incisions to correct astigmatism
... to 160 degrees. Duffey et al.16 performed a cadaver eye study to evaluate the effectiveness of arcuate incisions and found that longer paired arcuate incisions produced a predictable cornea1 flattening in the meridian centered over the incisions and a smaller cornea1 steepening 90 degrees away, maki ...
... to 160 degrees. Duffey et al.16 performed a cadaver eye study to evaluate the effectiveness of arcuate incisions and found that longer paired arcuate incisions produced a predictable cornea1 flattening in the meridian centered over the incisions and a smaller cornea1 steepening 90 degrees away, maki ...
Novel methods and tools for corneal barrier function assessment through non-invasive
... The cornea is a hemispherical transparent structure located in front of the eye that allows the transmission of light and protects the ocular globe against external aggressions. Basically, it consists of three layers; the outer layer is the epithelium, the mean and thicker layer is the stroma and th ...
... The cornea is a hemispherical transparent structure located in front of the eye that allows the transmission of light and protects the ocular globe against external aggressions. Basically, it consists of three layers; the outer layer is the epithelium, the mean and thicker layer is the stroma and th ...
Keratoconus
Keratoconus (KC, KTCN) (from Greek: kerato- horn, cornea; and konos cone) is a degenerative disorder of the eye in which structural changes within the cornea cause it to thin and change to a more conical shape than the more normal gradual curve.Keratoconus can cause substantial distortion of vision, with multiple images, streaking and sensitivity to light all often reported by the person. It is typically diagnosed in the person's adolescent years. If both eyes are significantly affected, the deterioration in vision can affect the person's ability to drive a car or read normal print.In most cases, corrective lenses fitted by a specialist are effective enough to allow the person to continue to drive legally and likewise function normally. Further progression of the disease may require surgery, for which several options are available, including intrastromal corneal ring segments, corneal collagen cross-linking, mini asymmetric radial keratotomy, corneal intrastromal implantation system (CISIS), topography-guided photorefractive keratectomy (PRK), topography-guided conductive keratoplasty, phakic intraocular lenses and, in 25% of cases, corneal transplantation.Estimates of the prevalence for keratoconus range from 1 in 500 to 1 in 2000 people, but difficulties with differential diagnosis cause uncertainty as to its prevalence. It seems to occur in populations throughout the world, although it is observed more frequently in certain ethnic groups, such as South Asians. Environmental and genetic factors are considered possible causes, but the exact cause is uncertain. It has been associated with detrimental enzyme activity within the cornea.