Wavefront-Guided LASIK for the Correction of Primary Myopia and
... Objective: To describe wavefront-guided (WFG) LASIK for the primary treatment of low to moderate levels of myopia and astigmatism and to examine the evidence on the safety and effectiveness of the procedure in comparison with conventional LASIK. Methods: Literature searches conducted in 2004, 2005, ...
... Objective: To describe wavefront-guided (WFG) LASIK for the primary treatment of low to moderate levels of myopia and astigmatism and to examine the evidence on the safety and effectiveness of the procedure in comparison with conventional LASIK. Methods: Literature searches conducted in 2004, 2005, ...
Fishes with Eye Shine: Functional Morphology of Guanine Type
... observed in the eyes of Diaphus, Neoscopelus, Epigonus, Priacanthus and Pristigenys. The retina of Diaphus coeruleus (Fig. 6A) reveals the same histological features as does Diaphus sagamiensis. The retina is of a pure rod type and features a tapetum between choriocapillaries and visual cell layer. ...
... observed in the eyes of Diaphus, Neoscopelus, Epigonus, Priacanthus and Pristigenys. The retina of Diaphus coeruleus (Fig. 6A) reveals the same histological features as does Diaphus sagamiensis. The retina is of a pure rod type and features a tapetum between choriocapillaries and visual cell layer. ...
Local Coverage Determination for Ophthalmic Angiography
... Fluorescein angiography must be performed under the direct supervision (physician present in the office and immediately available) of a physician when done by a non-physician practitioner. If excluded by State law, optometrists may not be reimbursed for fluorescein angiography. Fluorescein angiograp ...
... Fluorescein angiography must be performed under the direct supervision (physician present in the office and immediately available) of a physician when done by a non-physician practitioner. If excluded by State law, optometrists may not be reimbursed for fluorescein angiography. Fluorescein angiograp ...
Care of the Patient with Cataract
... activities of daily living, surgical lens removal with intraocular lens implantation is generally the preferred means of treating the functional limitations. In the United States, more than 1.35 million cataract surgical procedures were paid for by Medicare in both 1990 and 1991, making it the most ...
... activities of daily living, surgical lens removal with intraocular lens implantation is generally the preferred means of treating the functional limitations. In the United States, more than 1.35 million cataract surgical procedures were paid for by Medicare in both 1990 and 1991, making it the most ...
PG0037 Corneal Pachymetry
... Elevated intraocular pressure in glaucoma suspect when corneal thickness is unknown Worsening of glaucoma when corneal thickness is unknown Enlarged cup-disc ratio is equal to or greater than 0.3 Corneal pachymetry is covered preoperatively for patients scheduled for corneal transplant. Cornea ...
... Elevated intraocular pressure in glaucoma suspect when corneal thickness is unknown Worsening of glaucoma when corneal thickness is unknown Enlarged cup-disc ratio is equal to or greater than 0.3 Corneal pachymetry is covered preoperatively for patients scheduled for corneal transplant. Cornea ...
The Alabama Age-Related Macular Degeneration Grading
... horizontally with a razor, just superiorly to the foveal depression. The inferior half of each macula was subdivided into blocks containing the fovea, temporal parafovea, and nasal parafovea, which were osmicated, dehydrated, and embedded in Epon-Araldite using standard procedures. The foveal and te ...
... horizontally with a razor, just superiorly to the foveal depression. The inferior half of each macula was subdivided into blocks containing the fovea, temporal parafovea, and nasal parafovea, which were osmicated, dehydrated, and embedded in Epon-Araldite using standard procedures. The foveal and te ...
Paralytic Strabismus: Third, Fourth, and Sixth Nerve Palsy
... hypertension, diabetes, hyperlipidemia, advanced age, and smoking (see Fig. 4). This disorder results from impairment of microcirculation leading to circumscribed, ischemic demyelination of axons at the core of the nerve, typically in the cavernous sinus portion where a watershed territory exists.5, ...
... hypertension, diabetes, hyperlipidemia, advanced age, and smoking (see Fig. 4). This disorder results from impairment of microcirculation leading to circumscribed, ischemic demyelination of axons at the core of the nerve, typically in the cavernous sinus portion where a watershed territory exists.5, ...
Differences in nasal and temporal responses of the cornea after
... degree of refractive error. In all groups, the nasal regions had a lower radius of curvature than the temporal regions (Table 2). As expected, postoperative central flattening and peripheral steepness correlated well with the degree to which the refractive error was corrected. Table 3 shows the nume ...
... degree of refractive error. In all groups, the nasal regions had a lower radius of curvature than the temporal regions (Table 2). As expected, postoperative central flattening and peripheral steepness correlated well with the degree to which the refractive error was corrected. Table 3 shows the nume ...
Cancer Association of South Africa (CANSA) Fact Sheet
... copy, then he or she will not have the disorder. Different genes are responsible for the different types of albinism. Oculocutaneous albinism (OCA) is the most common type of albinism. Several different genes have been identified that may cause OCA. Mutations (changes) in different genes cause diffe ...
... copy, then he or she will not have the disorder. Different genes are responsible for the different types of albinism. Oculocutaneous albinism (OCA) is the most common type of albinism. Several different genes have been identified that may cause OCA. Mutations (changes) in different genes cause diffe ...
Guidelines For Vision Screening Programs: Kindergarten
... Handheld, portable autorefractors analyze light reflected from the retina to give an estimate of refractive error. These devices work well for young students and students with special needs that are difficult to screen. Carefully research the different devices so that it meets your screening nee ...
... Handheld, portable autorefractors analyze light reflected from the retina to give an estimate of refractive error. These devices work well for young students and students with special needs that are difficult to screen. Carefully research the different devices so that it meets your screening nee ...
Retinal Vein Occlusions - Kashyap Memorial Eye Hospital
... Neovascularization of the iris and neovascular glaucoma are uncommon and occur in only approximately 1% of affected eyes. More commonly, neovascularization of the disc occurs in approximately 10% of eyes, and neovascularization elsewhere occurs in approximately 20% of eyes. Generally, retinal neovas ...
... Neovascularization of the iris and neovascular glaucoma are uncommon and occur in only approximately 1% of affected eyes. More commonly, neovascularization of the disc occurs in approximately 10% of eyes, and neovascularization elsewhere occurs in approximately 20% of eyes. Generally, retinal neovas ...
lasik and arcuate incisions for the treatment
... or by contact lenses (problems of tolerance or stability). Different techniques have been proposed to treat high post-PKP astigmatism. Wedge resection (21), suture management and arcuate keratotomy (AK) (10, 14, 16, 19, 20) do reduce astigmatism to a certain extent but the results are unpredictable. ...
... or by contact lenses (problems of tolerance or stability). Different techniques have been proposed to treat high post-PKP astigmatism. Wedge resection (21), suture management and arcuate keratotomy (AK) (10, 14, 16, 19, 20) do reduce astigmatism to a certain extent but the results are unpredictable. ...
The Critical Period for Ocular Dominance Plasticity in the Ferret`s
... postnatal week 4, but are then lost over the next 3 weeks (Crair et al., 1998). All of these findings are consistent with the notion that the maturation of cortical response properties relies in part on activity-dependent mechanisms that are driven by the patterns of neural activity present during n ...
... postnatal week 4, but are then lost over the next 3 weeks (Crair et al., 1998). All of these findings are consistent with the notion that the maturation of cortical response properties relies in part on activity-dependent mechanisms that are driven by the patterns of neural activity present during n ...
PDF
... We hypothesize that an active mechanism for this auto-compensation could be partially explained by a subtle shift or tilt of the physiologic lens, which would thus also make the eye robust to structural variations such as LASIK induced corneal aberrations. This hypothesis is supported by the fact th ...
... We hypothesize that an active mechanism for this auto-compensation could be partially explained by a subtle shift or tilt of the physiologic lens, which would thus also make the eye robust to structural variations such as LASIK induced corneal aberrations. This hypothesis is supported by the fact th ...
Animal model of closed angle glaucoma in albino mutant
... retinal ganglion cell degeneration, cupping of the optic disc, and cataract.6"8 The histopathologicalfindingsin the retina of albino mutant quails are similar to those in animals with experimentally induced or spontaneous glaucoma. Previously,7 we did not consider the albino mutant quails as an avia ...
... retinal ganglion cell degeneration, cupping of the optic disc, and cataract.6"8 The histopathologicalfindingsin the retina of albino mutant quails are similar to those in animals with experimentally induced or spontaneous glaucoma. Previously,7 we did not consider the albino mutant quails as an avia ...
Ophthalmic Preparations
... Ophthalmic solutions are infrequently prepared in the pharmacy. When an ophthalmic solution is extemporaneously prepared, care must be taken to ensure that the preparation will benefit the patient. The following considerations are important when such a solution is being compounded. a. Prescribed Dru ...
... Ophthalmic solutions are infrequently prepared in the pharmacy. When an ophthalmic solution is extemporaneously prepared, care must be taken to ensure that the preparation will benefit the patient. The following considerations are important when such a solution is being compounded. a. Prescribed Dru ...
Ophthalmology and Eye Diseases clinical Options for the Reduction
... Latanaprost and Travaprost are ester prodrugs of PGF 2 alpha and Bimatoprost is the amide prodrug of 17-phenyl-PGF 2alpha. Bimatoprost, latanoprost and travoprost have received American (FDA) and European (EMEA) approval as first line agents in patients where IOP reduction is desired, specifically O ...
... Latanaprost and Travaprost are ester prodrugs of PGF 2 alpha and Bimatoprost is the amide prodrug of 17-phenyl-PGF 2alpha. Bimatoprost, latanoprost and travoprost have received American (FDA) and European (EMEA) approval as first line agents in patients where IOP reduction is desired, specifically O ...
BI2012_Berg_VC_v5
... Finally, we will look at performance tuning options and the future of SAP NetWeaver Visual Composer in the new SAP BusinessObjects ...
... Finally, we will look at performance tuning options and the future of SAP NetWeaver Visual Composer in the new SAP BusinessObjects ...
NSS513 - National Open University of Nigeria
... film of a camera). The exterior of the cornea is bathed by tears, while the interior is bathed by the aqueous humor. It is an osmotic fluid containing salts, albumin, globulin, glucose, and other constituents. The aqueous humor brings nutrients to the cornea and to the lens and removes end products ...
... film of a camera). The exterior of the cornea is bathed by tears, while the interior is bathed by the aqueous humor. It is an osmotic fluid containing salts, albumin, globulin, glucose, and other constituents. The aqueous humor brings nutrients to the cornea and to the lens and removes end products ...
Lamina cribrosa, angles and blebs
... across 4 control eyes each assessed at 3 different time-points was low (7.6 ± 1.1°). The mean difference in local beam orientation in EG eyes before the first significant change in beam orientation was 9.3 ± 3.4°. The first time point with a significant change in local beam orientation (mean differe ...
... across 4 control eyes each assessed at 3 different time-points was low (7.6 ± 1.1°). The mean difference in local beam orientation in EG eyes before the first significant change in beam orientation was 9.3 ± 3.4°. The first time point with a significant change in local beam orientation (mean differe ...
Ophthalmology Microsoft Word
... 90. The normal vision field for the white color nasally in horizontal axis makes: A. 45° B. 90° C. 70° D. *60° E. 10° 91. Scotoma - is: A. vision field defect, due to periphery B. vision field narrowing C. vision field half falling out D. *vision field defect, which is not due to periphery E. total ...
... 90. The normal vision field for the white color nasally in horizontal axis makes: A. 45° B. 90° C. 70° D. *60° E. 10° 91. Scotoma - is: A. vision field defect, due to periphery B. vision field narrowing C. vision field half falling out D. *vision field defect, which is not due to periphery E. total ...
Ophthalmology Microsoft Word
... 90. The normal vision field for the white color nasally in horizontal axis makes: A. 45° B. 90° C. 70° D. *60° E. 10° 91. Scotoma - is: A. vision field defect, due to periphery B. vision field narrowing C. vision field half falling out D. *vision field defect, which is not due to periphery E. total ...
... 90. The normal vision field for the white color nasally in horizontal axis makes: A. 45° B. 90° C. 70° D. *60° E. 10° 91. Scotoma - is: A. vision field defect, due to periphery B. vision field narrowing C. vision field half falling out D. *vision field defect, which is not due to periphery E. total ...
Ocular Trauma
... made defer ALL further examination until time of surgical repair ► Avoid placing any pressure on the globe and risking extrusion of intraocular contents. ► Protect ...
... made defer ALL further examination until time of surgical repair ► Avoid placing any pressure on the globe and risking extrusion of intraocular contents. ► Protect ...
Sight loss in older people
... and “hand movements”. Care should be taken to obtain an accurate assessment between these levels by testing at closer distances if necessary. Near visual acuity General practice premises may use newspapers and magazines to check near vision if specialist charts are not available. ...
... and “hand movements”. Care should be taken to obtain an accurate assessment between these levels by testing at closer distances if necessary. Near visual acuity General practice premises may use newspapers and magazines to check near vision if specialist charts are not available. ...
Failed Deep Anterior Lamellar Keratoplasty in Avellino Stromal
... amyloid and hyaline deposits in these patients. In 1992, the clinical findings of these patients were published. Avellino, which is the Italian district of the progenitor of the pedigree, became the popular name.1,3 It is an autosomal dominant disease. Mutation of TGFβ1, or keratoepithelin ...
... amyloid and hyaline deposits in these patients. In 1992, the clinical findings of these patients were published. Avellino, which is the Italian district of the progenitor of the pedigree, became the popular name.1,3 It is an autosomal dominant disease. Mutation of TGFβ1, or keratoepithelin ...
Visual impairment due to intracranial pressure
Spaceflight induced visual impairment is hypothesized to be a result of increased intracranial pressure. The study of visual changes and intracranial pressure (ICP) in astronauts on long-duration flights is a relatively recent topic of interest to Space Medicine professionals. Although reported signs and symptoms have not appeared to be severe enough to cause blindness in the near term, long term consequences of chronically elevated intracranial pressure is unknown.NASA has reported that fifteen long-duration male astronauts (45–55 years of age) have experienced confirmed visual and anatomical changes during or after long-duration flights. Optic disc edema, globe flattening, choroidal folds, hyperopic shifts and an increased intracranial pressure have been documented in these astronauts. Some individuals experienced transient changes post-flight while others have reported persistent changes with varying degrees of severity.Although the exact cause is not known at this time, it is suspected that microgravity-induced cephalad fluid shift and comparable physiological changes play a significant role in these changes. Other contributing factors may include pockets of increased CO2 and an increase in sodium intake. It seems unlikely that resistive or aerobic exercise are contributing factors, but they may be potential countermeasures to reduce intraocular pressure (IOP) or intracranial pressure (ICP) in-flight.