Pressure Measurement: Which Tonometer?
... Schi0tz tonometer is not only inaccurate but also may consistently read low and be grossly misleading. As validated by direct measurements with a cannula inside the eyes of patients toith irregidar corneal surfaces, the electronic applanation tonometer (MacKay-Marg tonometer) provided the first meas ...
... Schi0tz tonometer is not only inaccurate but also may consistently read low and be grossly misleading. As validated by direct measurements with a cannula inside the eyes of patients toith irregidar corneal surfaces, the electronic applanation tonometer (MacKay-Marg tonometer) provided the first meas ...
The neglected refractive interface: Impact of the tear film
... cular surface disease can have a cascading effect on refractive cataract surgery. If surgeons neglect the tear film, significant consequences may result, affecting surgical data and planning and the patient’s visual outcome. Therefore, it’s important that we understand the impact of dry eye and trea ...
... cular surface disease can have a cascading effect on refractive cataract surgery. If surgeons neglect the tear film, significant consequences may result, affecting surgical data and planning and the patient’s visual outcome. Therefore, it’s important that we understand the impact of dry eye and trea ...
- Journal Of Emmetropia :: Home
... primary incision of approximately 3.5 mm, without the need for suture, as in the case described here. This gives an idea of the enormous flexibility of the lens. The same characteristics that allow for easy insertion through a relatively small incision size for the dimensions of the lens14 also faci ...
... primary incision of approximately 3.5 mm, without the need for suture, as in the case described here. This gives an idea of the enormous flexibility of the lens. The same characteristics that allow for easy insertion through a relatively small incision size for the dimensions of the lens14 also faci ...
An Ocularist`s Approach to Human Iris Synthesis
... anterior surface is divided into the ciliary zone and the pupil zone by a thickened region called the collarette. There are four layers in the iris: the anterior border layer, the stroma, the dilator pupillae muscle and the posterior pigment epithelium (Figure 2). The anterior border layer consists ...
... anterior surface is divided into the ciliary zone and the pupil zone by a thickened region called the collarette. There are four layers in the iris: the anterior border layer, the stroma, the dilator pupillae muscle and the posterior pigment epithelium (Figure 2). The anterior border layer consists ...
Regenerative Approaches as Alternatives to Donor Allografting for Restoration of Corneal Function
... penetrating keratoplasty, lamellar keratoplasty, or endothelial keratoplasty. However, success is limited in conditions that involve corneal nerve damage, such as trauma or infection (bacteria, fungal or viral); or pathologies that chronically disrupt the ocular surface mucosa (ocular cicatricial pe ...
... penetrating keratoplasty, lamellar keratoplasty, or endothelial keratoplasty. However, success is limited in conditions that involve corneal nerve damage, such as trauma or infection (bacteria, fungal or viral); or pathologies that chronically disrupt the ocular surface mucosa (ocular cicatricial pe ...
Ocular Surgery News Europe Edition, September
... “In the near future, we should have algorithms and calculators we can use independently. The IPCL has very flexible parameters in terms of diameter, optical zones and dioptric power. You can do mix-and-match or choose monovision. You can play with a lot of variables to achieve the best vision for ne ...
... “In the near future, we should have algorithms and calculators we can use independently. The IPCL has very flexible parameters in terms of diameter, optical zones and dioptric power. You can do mix-and-match or choose monovision. You can play with a lot of variables to achieve the best vision for ne ...
Clinical highs and lows of Dk/t
... cell density is not affected by either daily or continuous contact lens wear; however, the distribution of cell sizes and shapes does change, effects known as polymegethism and pleomorphism respectively. Of the clinical markers that potentially indicate long-term physiological compromise to the corn ...
... cell density is not affected by either daily or continuous contact lens wear; however, the distribution of cell sizes and shapes does change, effects known as polymegethism and pleomorphism respectively. Of the clinical markers that potentially indicate long-term physiological compromise to the corn ...
A Prospective, Randomized Trial of DSAEK Outcomes Comparing
... RESULTS: The mean patient age was 70 years ± 10 years (range, 55−87), with 52 eyes (83%) having Fuchs endothelial corneal dystrophy and 11 eyes (17%) with pseudophakic bullous keratopathy. Mean preoperative best spectacle-corrected visual acuity (BSCVA) was 20/96 (0.68) in Group 1 and 20/130 (0.81) ...
... RESULTS: The mean patient age was 70 years ± 10 years (range, 55−87), with 52 eyes (83%) having Fuchs endothelial corneal dystrophy and 11 eyes (17%) with pseudophakic bullous keratopathy. Mean preoperative best spectacle-corrected visual acuity (BSCVA) was 20/96 (0.68) in Group 1 and 20/130 (0.81) ...
Pinkeye in Beef Cattle - University of Illinois Extension
... Farms that are facing an outbreak, bringing stocker following year. Waiting until the start of fly season to calves together, or weaning calves may consider this apply fly tags and removing the old fly tags in the fall option, but consulting your veterinarian or nutritionist also decreases the devel ...
... Farms that are facing an outbreak, bringing stocker following year. Waiting until the start of fly season to calves together, or weaning calves may consider this apply fly tags and removing the old fly tags in the fall option, but consulting your veterinarian or nutritionist also decreases the devel ...
The use of eyedrops, Emergency Nurse, 6, 8, 17-22
... patents with eye problems except under the direct supervision of an ophthalmologist. While this may appear a rather sweeping statement there are very few ophthalmic conditions in which steroids are indicated. All these, such as, uveitis, chemical burns, marginal ulcers, corneal transplant rejection, ...
... patents with eye problems except under the direct supervision of an ophthalmologist. While this may appear a rather sweeping statement there are very few ophthalmic conditions in which steroids are indicated. All these, such as, uveitis, chemical burns, marginal ulcers, corneal transplant rejection, ...
iowa / nebraska - Nebraska Academy of Eye Physicians and Surgeons
... technology to determine the tools, including magnifiers and telescopic devices, and training activities that are needed to assist each individual in maximizing the use of their remaining vision. Our skilled therapists provide this training in our specialized low vision house, and, in some cases, in ...
... technology to determine the tools, including magnifiers and telescopic devices, and training activities that are needed to assist each individual in maximizing the use of their remaining vision. Our skilled therapists provide this training in our specialized low vision house, and, in some cases, in ...
Short and Long Sightedness
... near objects. The ciliary muscle is a ring of striated smooth muscles in the eye's middle layer that controls viewing and regulates the flow of aqueous humour. It changes the shape of the lens within the eye, not the size of the pupil which is carried out by the sphincter pupillae muscle. Contractio ...
... near objects. The ciliary muscle is a ring of striated smooth muscles in the eye's middle layer that controls viewing and regulates the flow of aqueous humour. It changes the shape of the lens within the eye, not the size of the pupil which is carried out by the sphincter pupillae muscle. Contractio ...
Effects of nerve growth factor on nerve regeneration after corneal
... of cases within six months after LASIK complain the symptoms of dry eye [2, 7, 8], with varying degrees, affecting satisfaction of the patient with the surgery even with excellent vision. If some way could be explored to bring opportunities to promote the healing of corneal nerves, it can provide ne ...
... of cases within six months after LASIK complain the symptoms of dry eye [2, 7, 8], with varying degrees, affecting satisfaction of the patient with the surgery even with excellent vision. If some way could be explored to bring opportunities to promote the healing of corneal nerves, it can provide ne ...
Corneal epithelial healing after photorefractive keratectomy
... compound myopic astigmatism were enrolled for this study. The surgical procedure consisted of standardized PRK with final smoothing performed using the Technolas Keracor 217C excimer laser. The reepithelialization process was evaluated at 0 hours, 20 hours, 40 hours, and 60 hours after surgery using ...
... compound myopic astigmatism were enrolled for this study. The surgical procedure consisted of standardized PRK with final smoothing performed using the Technolas Keracor 217C excimer laser. The reepithelialization process was evaluated at 0 hours, 20 hours, 40 hours, and 60 hours after surgery using ...
The Corneal Dystrophies Why should we be interested in the
... Heterogenous group of rare systemic genetic disorders characterized by accumulation of GAGs w/in multiple organ systems Result from inherited abnormalities of specific lysosomal enzymes involved in degradation of GAGs GAGs accumulate intra- and extracellularly distorting cells and extacellular matri ...
... Heterogenous group of rare systemic genetic disorders characterized by accumulation of GAGs w/in multiple organ systems Result from inherited abnormalities of specific lysosomal enzymes involved in degradation of GAGs GAGs accumulate intra- and extracellularly distorting cells and extacellular matri ...
1 Fuchs Endothelial Dystrophy: Pathogenesis and Management
... sequenced in 115 additional unrelated FED patients, with a total of 8 individuals demonstrating mutations in the COL8A2 gene [4]. Gottsch et al. performed genetic linkage analysis in a large early-onset FED pedigree originally described by Magovern [35] and identified a second point mutation in COL8 ...
... sequenced in 115 additional unrelated FED patients, with a total of 8 individuals demonstrating mutations in the COL8A2 gene [4]. Gottsch et al. performed genetic linkage analysis in a large early-onset FED pedigree originally described by Magovern [35] and identified a second point mutation in COL8 ...
Detecting Strabismus by Dr Nadia Northway PhD BA DBO
... Most of us use our binocular vision without thinking about it. It is not until symptoms occur that problems with binocular vision grab our attention. Assessing patients for binocular vision anomalies is easy to carry out and requires little equipment. The techniques that we describe can be used to ...
... Most of us use our binocular vision without thinking about it. It is not until symptoms occur that problems with binocular vision grab our attention. Assessing patients for binocular vision anomalies is easy to carry out and requires little equipment. The techniques that we describe can be used to ...
The Sensory Organs
... Sensory organs include the receptors and accessory organs. The receptors may be divided into three kinds: The exteroceptors 外感受器: receive stimuli such as touch, temperature, pain, light and sound from the ...
... Sensory organs include the receptors and accessory organs. The receptors may be divided into three kinds: The exteroceptors 外感受器: receive stimuli such as touch, temperature, pain, light and sound from the ...
3318_JSRB-16-MR - ResearchSpace@Auckland
... cells demonstrating cell surface markers consistent with limbal stem cells. Nonetheless, this may reflect the composition of the limbal cell population in vivo, although no studies have yet classified and quantified the types and proportions of cells that persist in the host eye. Limbal stem cell tr ...
... cells demonstrating cell surface markers consistent with limbal stem cells. Nonetheless, this may reflect the composition of the limbal cell population in vivo, although no studies have yet classified and quantified the types and proportions of cells that persist in the host eye. Limbal stem cell tr ...
OptimizingVision AcrossGenerations
... to a patient who is accommodating significantly, I generally push plus lenses as far as the patient will accept the refraction. I then add an additional +0.25 D or +0.50 D more plus, and the patient will accept that over a few days. I also like to prescribe a drop of cyclopentolate 1% at bedtime to ...
... to a patient who is accommodating significantly, I generally push plus lenses as far as the patient will accept the refraction. I then add an additional +0.25 D or +0.50 D more plus, and the patient will accept that over a few days. I also like to prescribe a drop of cyclopentolate 1% at bedtime to ...
Eye Problems - Canis Maximus
... ophthalmologist at the teaching hospital. The disease causes pigmentation and superficial blood vessels on the eye. It's not that painful but can decrease vision if left untreated. Keratitis also occurs in chronic cases of keratoconjunctivitis sicca (KCS). KCS occurs when there is not enough moistur ...
... ophthalmologist at the teaching hospital. The disease causes pigmentation and superficial blood vessels on the eye. It's not that painful but can decrease vision if left untreated. Keratitis also occurs in chronic cases of keratoconjunctivitis sicca (KCS). KCS occurs when there is not enough moistur ...
Dynamic Morphology of Clear Corneal Cataract Incisions - F
... was limited such that the difference did not achieve statistical significance (P ⫽ 0.14). The suggestion of increased risk of acute endophthalmitis with self-sealing clear corneal incisions raises the question whether it might be possible for surface bacteria to traverse these clear corneal incision ...
... was limited such that the difference did not achieve statistical significance (P ⫽ 0.14). The suggestion of increased risk of acute endophthalmitis with self-sealing clear corneal incisions raises the question whether it might be possible for surface bacteria to traverse these clear corneal incision ...
CURRICULUM VITAE Prepared 1/2012 Name
... and Physiology 2003: Brigham and Women’s Hospital, Department of Medicine, 26th Annual Intensive Review of Internal Medicine: Office Ophthalmology 2004-09:Lancaster Course in Ophthalmology, Colby College, ME, Refractive Surgery and Corneal topography 2004: Brigham and Women’s Hospital, Department of ...
... and Physiology 2003: Brigham and Women’s Hospital, Department of Medicine, 26th Annual Intensive Review of Internal Medicine: Office Ophthalmology 2004-09:Lancaster Course in Ophthalmology, Colby College, ME, Refractive Surgery and Corneal topography 2004: Brigham and Women’s Hospital, Department of ...
Package Insert
... Case history and standard clinical evaluation procedure should be used to determine the prognosis. Determine the distance correction and the near correction. Next determine the near ADD. With trial lenses of the proper power in place, observe the reaction to this mode of correction. Allow the lenses ...
... Case history and standard clinical evaluation procedure should be used to determine the prognosis. Determine the distance correction and the near correction. Next determine the near ADD. With trial lenses of the proper power in place, observe the reaction to this mode of correction. Allow the lenses ...
Anterior Chamber Width Measurement by High
... Methods: A novel high-speed (4000 axial scans/second) OCT prototype was developed for anterior segment scanning. The system uses long wavelength (1310 nm) for deeper angle penetration, rectangular scanning for undistorted imaging, and short image acquisition time (0.125 seconds) to reduce motion err ...
... Methods: A novel high-speed (4000 axial scans/second) OCT prototype was developed for anterior segment scanning. The system uses long wavelength (1310 nm) for deeper angle penetration, rectangular scanning for undistorted imaging, and short image acquisition time (0.125 seconds) to reduce motion err ...
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.