biologic corneal bandage
... Descemet’s stripping endothelial keratoplasty (DSEK) is currently the treatment of choice over penetrating keratoplasty in cases with bullous keratopathy due to corneal endothelial dysfunction. Advantages include faster recovery and fewer complications. In cases with pseudophakic bullous keratopathy ...
... Descemet’s stripping endothelial keratoplasty (DSEK) is currently the treatment of choice over penetrating keratoplasty in cases with bullous keratopathy due to corneal endothelial dysfunction. Advantages include faster recovery and fewer complications. In cases with pseudophakic bullous keratopathy ...
An optomechanical model eye for ophthalmological refractive studies
... to construct, although the need for corrective intraocular lenses (IOLs) after cataract surgery is pressing. The development cycle of IOLs is lengthy and the process costly, especially because of the requisite testing on primates, which have accommodation mechanisms comparable to those of humans.1 M ...
... to construct, although the need for corrective intraocular lenses (IOLs) after cataract surgery is pressing. The development cycle of IOLs is lengthy and the process costly, especially because of the requisite testing on primates, which have accommodation mechanisms comparable to those of humans.1 M ...
Cataract Surgery and Intraocular Lenses - What
... Once a visually disabling cataract is extracted, an intraocular lens (IOL) is placed into the space formerly occupied by the cataract to rehabilitate the patient’s vision. A wider variety of IOLs are now available and can be classified based on focality, composition and design. A traditional IOL is ...
... Once a visually disabling cataract is extracted, an intraocular lens (IOL) is placed into the space formerly occupied by the cataract to rehabilitate the patient’s vision. A wider variety of IOLs are now available and can be classified based on focality, composition and design. A traditional IOL is ...
Mohamed Hany A. Salem_111
... children remains therapeutically challenging. The options available are contact lenses, epikeratophakia and intraocular lenses . Each of these methods has associated problems that make them less than ideal. (9) Of the four options, intraocular lenses have the greatest potential for restoring normal ...
... children remains therapeutically challenging. The options available are contact lenses, epikeratophakia and intraocular lenses . Each of these methods has associated problems that make them less than ideal. (9) Of the four options, intraocular lenses have the greatest potential for restoring normal ...
Dry eyes
... Hyaluronate, Castor oil and lubricating eye ointment. Ultimately the choice depends on which is more comfortable and efficacious for the patient. Many of these preparations are available over the counter. Treatment failures can occur if patients do not use ocular lubrication often enough, and should ...
... Hyaluronate, Castor oil and lubricating eye ointment. Ultimately the choice depends on which is more comfortable and efficacious for the patient. Many of these preparations are available over the counter. Treatment failures can occur if patients do not use ocular lubrication often enough, and should ...
The matrix of the optic vesicle-presumptive lens
... The cell coats of the presumptive lens cells and the extracellular interface between the lens rudiment and optic vesicle were investigated in the chicken embryo throughout the period during which lens induction is presumed to take place. Histochemical methods showed that the cell coats contained bot ...
... The cell coats of the presumptive lens cells and the extracellular interface between the lens rudiment and optic vesicle were investigated in the chicken embryo throughout the period during which lens induction is presumed to take place. Histochemical methods showed that the cell coats contained bot ...
Important Safety Instructions
... Ensure lever is in FAR position. Place lens in the holder. The lens must be inserted in the slot with the label facing the front of the instrument. ...
... Ensure lever is in FAR position. Place lens in the holder. The lens must be inserted in the slot with the label facing the front of the instrument. ...
Wide-field schematic eye models with gradient
... with a GRIN lens, to be used as a starting point for solving the eye inverse problem, is proposed and is optimized to fit both chromatic aberrations and overall root-meansquare (RMS) wavefront error observed at different visual field angles. The experimental data for chromatic aberrations is taken f ...
... with a GRIN lens, to be used as a starting point for solving the eye inverse problem, is proposed and is optimized to fit both chromatic aberrations and overall root-meansquare (RMS) wavefront error observed at different visual field angles. The experimental data for chromatic aberrations is taken f ...
prk versus lasik after cataract surgery
... Cataract surgery has rapidly become one of the most widely performed surgeries in the world. Although implants have improved significantly with continued research, inaccuracies in IOL calculation and preexisting corneal astigmatism often result in some degree of residual refractive error.1 This pseu ...
... Cataract surgery has rapidly become one of the most widely performed surgeries in the world. Although implants have improved significantly with continued research, inaccuracies in IOL calculation and preexisting corneal astigmatism often result in some degree of residual refractive error.1 This pseu ...
HEFAT2014 10 International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
... initial models of the eye was developed by Al-Badwaihy and Youssef [4] in 1976 to analyse the thermal effects of microwave radiation on the eye. The eye was modelled as a spherical structure composed of uniform tissue, and thermal properties were obtained from averaging the thermal properties of ind ...
... initial models of the eye was developed by Al-Badwaihy and Youssef [4] in 1976 to analyse the thermal effects of microwave radiation on the eye. The eye was modelled as a spherical structure composed of uniform tissue, and thermal properties were obtained from averaging the thermal properties of ind ...
Choroidal Imaging With Swept-source Optical Coherence Tomography
... not only get a reading from a single spot, as with corneal pachymetry, but we also get a full-fledged corneal thickness map for the entire OCT scan, which can then be correlated with the IOP measurements. We performed another large study of almost 700 eyes to obtain the correlation of IOP to corneal ...
... not only get a reading from a single spot, as with corneal pachymetry, but we also get a full-fledged corneal thickness map for the entire OCT scan, which can then be correlated with the IOP measurements. We performed another large study of almost 700 eyes to obtain the correlation of IOP to corneal ...
A partial-thickness epithelial defect increases the adherence
... Some patients with infectious keratitis have no clinically demonstrable corneal abrasion predisposing them to infection. Subtle, undetectable corneal injuries may facilitate bacterial adherence to the cornea, eventually leading to keratitis. To study this concept, we have developed a rabbit model in ...
... Some patients with infectious keratitis have no clinically demonstrable corneal abrasion predisposing them to infection. Subtle, undetectable corneal injuries may facilitate bacterial adherence to the cornea, eventually leading to keratitis. To study this concept, we have developed a rabbit model in ...
Bilateral Eviscerations-Retinopathy of Prematurity
... birthweight of 1000 grams or less. Incidence falls to 7% if the birthweight is between 1001 and 1500 grams ...
... birthweight of 1000 grams or less. Incidence falls to 7% if the birthweight is between 1001 and 1500 grams ...
Cornea Selection Policy - NHSBT
... It is likely that it will not achieve the intended outcome The conditions causing abnormalities of the cornea and ocular surface will prevent survival of the transplanted cornea or will impede restoration of corneal function and or corneal integrity ...
... It is likely that it will not achieve the intended outcome The conditions causing abnormalities of the cornea and ocular surface will prevent survival of the transplanted cornea or will impede restoration of corneal function and or corneal integrity ...
C hanging lives through better vision…
... The result is reduced elasticity, thus the lack of ability for the lens to focus properly. Unfortunately, this is not a refractive disorder and cannot be corrected by Laser Vision Correction. Although, there are some experimental procedures on the horizon, it may be years before we see help in this ...
... The result is reduced elasticity, thus the lack of ability for the lens to focus properly. Unfortunately, this is not a refractive disorder and cannot be corrected by Laser Vision Correction. Although, there are some experimental procedures on the horizon, it may be years before we see help in this ...
newborn with bilateral hazy corneas
... ocular defect, but associated ocular and systemic anomalies are described (Table 2). Mostly, the associated ocular and systemic anomalies in patients with Peters’ anomaly are related to maldevelopment of the neural crest cells. Early treatment for those systemic anomalies is essential. Ozeki et al. ...
... ocular defect, but associated ocular and systemic anomalies are described (Table 2). Mostly, the associated ocular and systemic anomalies in patients with Peters’ anomaly are related to maldevelopment of the neural crest cells. Early treatment for those systemic anomalies is essential. Ozeki et al. ...
Pitfalls in Intraocuar Pressure Measurement by Goldmann
... Hence tight collars and ties should be loosened before positioning of the patient at the slit lamp12. Eye position Eye position can affect IOP transiently. This transient rise is thought to be due to rectus muscle tone. The magnitude of effect of globe position on IOP can be exaggerated in patients ...
... Hence tight collars and ties should be loosened before positioning of the patient at the slit lamp12. Eye position Eye position can affect IOP transiently. This transient rise is thought to be due to rectus muscle tone. The magnitude of effect of globe position on IOP can be exaggerated in patients ...
PDF - The Asia-Pacific Journal of Ophthalmology
... tissue and angiogenesis, the latent properties of the corneal tissue actively inhibit this end result, which would drastically impede vision. When reviewing the literature in this area, it is obvious that the majority of testing has been conducted on animals, but there are major differences between ...
... tissue and angiogenesis, the latent properties of the corneal tissue actively inhibit this end result, which would drastically impede vision. When reviewing the literature in this area, it is obvious that the majority of testing has been conducted on animals, but there are major differences between ...
Distribution and associated factors of optic disc diameter and cup
... This study of Chinese residents aged 72 years and older showed that BMI was associated with VDD and axial length was related to both VCDR and VDD. The 97.5th percentile VCDR of our participants was 0.8, larger than the 0.7 found in other surveys19,20 (Table 4). It should be noted that participants w ...
... This study of Chinese residents aged 72 years and older showed that BMI was associated with VDD and axial length was related to both VCDR and VDD. The 97.5th percentile VCDR of our participants was 0.8, larger than the 0.7 found in other surveys19,20 (Table 4). It should be noted that participants w ...
1 OD Crossfire: Postoperative Management
... – Needs are basic requirements of human beings – Wants are the form human needs take as they are shaped by culture and individual personality – Demand is want backed by buying power ...
... – Needs are basic requirements of human beings – Wants are the form human needs take as they are shaped by culture and individual personality – Demand is want backed by buying power ...
Wilderness Medical Society Practice Guidelines for Wilderness
... burden; benefits, risks, equally reasonable and burden may be closely balanced ...
... burden; benefits, risks, equally reasonable and burden may be closely balanced ...
FAQ about Cataract Surgery
... IOL has the correction for astigmatism built in and is an excellent option for someone who wishes to spend much of their time without glasses on. In May 2013, the first accommodating toric IOL (Trulign) was FDA approved. What is a Presbyopia-correcting IOL? A Multifocal IOL? An Accommodating IOL? Ov ...
... IOL has the correction for astigmatism built in and is an excellent option for someone who wishes to spend much of their time without glasses on. In May 2013, the first accommodating toric IOL (Trulign) was FDA approved. What is a Presbyopia-correcting IOL? A Multifocal IOL? An Accommodating IOL? Ov ...
Topical Anesthetic Abuse Keratopathy and its Clinical Progression
... microbiological examination, but most cases are proven to be non-infectious although sometimes a causative agent of infection can be determined.2 The mainstay of treatment is prevention of anesthetic use. This can be successfully done with pain management. Intramuscular opiate analgesia and sedation ...
... microbiological examination, but most cases are proven to be non-infectious although sometimes a causative agent of infection can be determined.2 The mainstay of treatment is prevention of anesthetic use. This can be successfully done with pain management. Intramuscular opiate analgesia and sedation ...
VITAPOS
... dry eye patients including patients suffering from Sjögren syndrome. 24 The difference was significant at the p<0.01 level. Again, this formulation has a high polymer content with a corresponding oncotic pressure of over 70 mmHg, so its use is not practical in marginal dry eye patients. Artificial T ...
... dry eye patients including patients suffering from Sjögren syndrome. 24 The difference was significant at the p<0.01 level. Again, this formulation has a high polymer content with a corresponding oncotic pressure of over 70 mmHg, so its use is not practical in marginal dry eye patients. Artificial T ...
New Bi-Sign Aspheric IOL and Its Application
... in corneal asphericity. All these aspheric designs were based on Burk original design principle and relied on a compensation of the corneal spherical aberration as follows: the Tecnis IOL was designed to compensate average corneal aberration with corneal asphericity Q ⫽ ⫺0.26; the AcrySof IQ-corneal ...
... in corneal asphericity. All these aspheric designs were based on Burk original design principle and relied on a compensation of the corneal spherical aberration as follows: the Tecnis IOL was designed to compensate average corneal aberration with corneal asphericity Q ⫽ ⫺0.26; the AcrySof IQ-corneal ...
Contact lens
A contact lens, or simply contact, is a thin lens placed directly on the surface of the eye. Contact lenses are considered medical devices and can be worn to correct vision, or for cosmetic or therapeutic reasons. In 2004, it was estimated that 125 million people (2%) use contact lenses worldwide, including 28 to 38 million in the United States. In 2010, worldwide contact lens market was estimated at $6.1 billion, while the U.S. soft lens market is estimated at $2.1 billion. Multiple scientists have estimated that the global market will reach $11.7 billion by 2015. As of 2010, the average age of contact lens wearers globally was 31 years old and two thirds of wearers were female.People choose to wear contact lenses for many reasons. Aesthetics and cosmetics are often motivating factors for people who would like to avoid wearing glasses or would like to change the appearance of their eyes. Other people wear contacts for functional or optical reasons. When compared with spectacles, contact lenses typically provide better peripheral vision, and do not collect moisture such as rain, snow, condensation, or sweat. This makes them ideal for sports and other outdoor activities. Contact lens wearers can also wear sunglasses, goggles, or other eyewear of their choice without having to fit them with prescription lenses or worry about compatibility with glasses. Additionally, there are conditions such as keratoconus and aniseikonia that are typically corrected better by contacts than by glasses.