11. Nystagmus and other ocular motor oscillations
... minimal. Therapeutically, the nulling with convergence may be exploited by the use of base-out prisms and the null angle may be exploited either by prisms or, if the null angle is far removed from primary, by corrective surgery. The presence of a reversed optokinetic nystagmus (OKN) response or the ...
... minimal. Therapeutically, the nulling with convergence may be exploited by the use of base-out prisms and the null angle may be exploited either by prisms or, if the null angle is far removed from primary, by corrective surgery. The presence of a reversed optokinetic nystagmus (OKN) response or the ...
The conjunctiva in corneal epithelial wound healing
... conjunctival epithelial phenotypes (arrowheads). The pupillary area is almost entirely covered by conjunctival epithelium. Tiny “buds” of corneal epithelium can be seen along the line of contact between corneal and conjunctival epithelium. The patient’s vision was 3/18 (×10). (b) The eye after remov ...
... conjunctival epithelial phenotypes (arrowheads). The pupillary area is almost entirely covered by conjunctival epithelium. Tiny “buds” of corneal epithelium can be seen along the line of contact between corneal and conjunctival epithelium. The patient’s vision was 3/18 (×10). (b) The eye after remov ...
Wavefront Analysis for Keratoconus
... about the actual shape of the aberrant wavefront itself. Additionally, this value is not directly linked to the retinal image quality of the eye being investigated.20 Aberrations are defined by either negative or positive signs as well as a magnitude. A positive sign means that the aberrated wavefro ...
... about the actual shape of the aberrant wavefront itself. Additionally, this value is not directly linked to the retinal image quality of the eye being investigated.20 Aberrations are defined by either negative or positive signs as well as a magnitude. A positive sign means that the aberrated wavefro ...
EMIL WILLIAM CHYNN, MD - Park Avenue SafeSight
... Chynn, EW. Reliability of preoperative residual stromal thickness calculation and the safety of LASIK. Ophthalmology Times. 25(1): 18, 1999. Chynn, EW. Optimizing results for PRK and LASIK using personalized multifactorial nomograms. Ophthalmology Times. 25(1): 28, 1999. Chynn, EW. Topography-assist ...
... Chynn, EW. Reliability of preoperative residual stromal thickness calculation and the safety of LASIK. Ophthalmology Times. 25(1): 18, 1999. Chynn, EW. Optimizing results for PRK and LASIK using personalized multifactorial nomograms. Ophthalmology Times. 25(1): 28, 1999. Chynn, EW. Topography-assist ...
Commissioning Guide: Glaucoma (Recommendations)
... people who have a family history of the condition. These people, as well as people living in deprived areas with poor access to services, are at highest risk of becoming blind due to glaucoma. Ocular hypertension (OHT) is a very important risk factor for COAG, although COAG can occur with or without ...
... people who have a family history of the condition. These people, as well as people living in deprived areas with poor access to services, are at highest risk of becoming blind due to glaucoma. Ocular hypertension (OHT) is a very important risk factor for COAG, although COAG can occur with or without ...
Intravitreal bevacizumab: safety of multiple doses from a
... complications in this series are listed in Table 3. Thus, the frequency of suspected endophthalmitis was 0.06% (1/1655) for the total number of injections; 0.21% (1/471) after ranibizumab, and 0% after bevacizumab. There was also one case of rhegmatogenous retinal detachment, which presented 1 month ...
... complications in this series are listed in Table 3. Thus, the frequency of suspected endophthalmitis was 0.06% (1/1655) for the total number of injections; 0.21% (1/471) after ranibizumab, and 0% after bevacizumab. There was also one case of rhegmatogenous retinal detachment, which presented 1 month ...
Gustavo Adolfo Montenegro Martínez
... Figure 1.3.1. Light going into the eye towards the retina suffers scattering in the forward or backward direction depending on particle size. In this schematic representation, the scattering particle is in the center of the plot, the circular lines show the i ...
... Figure 1.3.1. Light going into the eye towards the retina suffers scattering in the forward or backward direction depending on particle size. In this schematic representation, the scattering particle is in the center of the plot, the circular lines show the i ...
Study of Ocular Aberrations Within a 10 deg Central Visual Field.
... The human eye has been a subject for study for many scientists across several centuries. Even axial or foveal image quality is often degraded by wavefront aberration or intraocular light scatter. Additionally vision degrades with age. It is also known that the aberrations of the eye, like any optica ...
... The human eye has been a subject for study for many scientists across several centuries. Even axial or foveal image quality is often degraded by wavefront aberration or intraocular light scatter. Additionally vision degrades with age. It is also known that the aberrations of the eye, like any optica ...
Goals and Objectives - International Council of Ophthalmology
... ophthalmologists worldwide. These guidelines are intended to improve the quality of eye care for patients. They have been adapted in many cases from similar documents (Benchmarks of Care) created by the American Academy of Ophthalmology based on their Preferred Practice Patterns. While it is temptin ...
... ophthalmologists worldwide. These guidelines are intended to improve the quality of eye care for patients. They have been adapted in many cases from similar documents (Benchmarks of Care) created by the American Academy of Ophthalmology based on their Preferred Practice Patterns. While it is temptin ...
Scleral buckling biomaterials and implants for retinal detachment
... drainage can be also performed during operation. In the course of a normal follow-up, the implant is progressively surrounded by a collagenous, tough and avascular capsule, that becomes translucent with time. Scleral buckling can be also combined with vitrectomy or, more rarely, air injection in the ...
... drainage can be also performed during operation. In the course of a normal follow-up, the implant is progressively surrounded by a collagenous, tough and avascular capsule, that becomes translucent with time. Scleral buckling can be also combined with vitrectomy or, more rarely, air injection in the ...
Session 440 Corneal biomechanics
... CXL treatment platforms. The riboflavin formulation adds another dimension of complexity for corneal thinning, and exploratory approaches have been undertaken to reduce the standard dextran concentration or replace it with other polymers. In this study with ex-vivo bovine eyes, we monitored corneal ...
... CXL treatment platforms. The riboflavin formulation adds another dimension of complexity for corneal thinning, and exploratory approaches have been undertaken to reduce the standard dextran concentration or replace it with other polymers. In this study with ex-vivo bovine eyes, we monitored corneal ...
Meibomian gland imaging: A review
... as meibum,4 which passes through numerous ductules into the central canal.2 From the central canal, the meibum is expelled onto the eyelid margin via a compressive force, and forms the superficial layer of the tear film.1,2 The layer of meibum within tears forms an integral part of the tear film and ...
... as meibum,4 which passes through numerous ductules into the central canal.2 From the central canal, the meibum is expelled onto the eyelid margin via a compressive force, and forms the superficial layer of the tear film.1,2 The layer of meibum within tears forms an integral part of the tear film and ...
The clinical features, current methods of retinoblastoma in children are reviewed.
... retinoblastoma is found in approximately 3% of all children with retinoblastoma.18,19 Those patients with bilateral or familial disease are at greatest risk, with 5% to 15% developing this finding.18,19 Hence, patients with bilateral or familial retinoblastoma are advised to have screening for pineo ...
... retinoblastoma is found in approximately 3% of all children with retinoblastoma.18,19 Those patients with bilateral or familial disease are at greatest risk, with 5% to 15% developing this finding.18,19 Hence, patients with bilateral or familial retinoblastoma are advised to have screening for pineo ...
Root Eye Dictionary
... distortions, such as from macular degeneration or an epiretinal membrane. To use, a patient is instructed to look at the central dot while covering an eye. If the surrounding lines are missing or look distorted, then the surface of the retina (which acts like "film in a camera") may be distorted as ...
... distortions, such as from macular degeneration or an epiretinal membrane. To use, a patient is instructed to look at the central dot while covering an eye. If the surrounding lines are missing or look distorted, then the surface of the retina (which acts like "film in a camera") may be distorted as ...
ABSTRACT Title of Dissertation / Thesis: STUDY OF OCULAR
... elimination rate of two injection amounts of triamcinolone acetonide, 4 mg and 16 mg, from the vitreous. From our pharmacokinetic model, we found the half-lives for 4 mg and 16 mg injection in the vitreous to be 18.6 days and 37.6 days, respectively. We subsequently estimated the half-lives of 1 mg ...
... elimination rate of two injection amounts of triamcinolone acetonide, 4 mg and 16 mg, from the vitreous. From our pharmacokinetic model, we found the half-lives for 4 mg and 16 mg injection in the vitreous to be 18.6 days and 37.6 days, respectively. We subsequently estimated the half-lives of 1 mg ...
Transconjunctival vs. CCI
... using the new incision technique. The apposition and healing of the conjunctival incision occur by the day after surgery, and the wound is not readily visible within a few days. There is no scar formation because coagulation or suturing of the incision is not performed. Because Tenon capsule remains ...
... using the new incision technique. The apposition and healing of the conjunctival incision occur by the day after surgery, and the wound is not readily visible within a few days. There is no scar formation because coagulation or suturing of the incision is not performed. Because Tenon capsule remains ...
Fundamental Concepts of Chronic Angle
... Mechanisms of Angle-closure There are several angle-closure mechanisms that play part in causing anatomical angle-closure. These include pupillary block, plateau iris, thick peripheral lens, lens-related causes, and ciliary block. Classification of mechanism into four level of blockage identifies ob ...
... Mechanisms of Angle-closure There are several angle-closure mechanisms that play part in causing anatomical angle-closure. These include pupillary block, plateau iris, thick peripheral lens, lens-related causes, and ciliary block. Classification of mechanism into four level of blockage identifies ob ...
ocular accommodation - department of ophthalmology
... The purpose of this thesis was to establish the sufficiency of the ocular accommodation and to characterize accommodative problems and related symptoms among otherwise healthy young school children. The purpose was also to evaluate an accommodative facility training technique by studying the effect ...
... The purpose of this thesis was to establish the sufficiency of the ocular accommodation and to characterize accommodative problems and related symptoms among otherwise healthy young school children. The purpose was also to evaluate an accommodative facility training technique by studying the effect ...
Chapter for the Oxford Textbook of Ophthalmology
... eyes with thin, less rigid sclera such as buphthalmos and myopia. If the scleral flap does not provide adequate resistance, the eye will be hypotonous. It is important to remember that the limbus may be thinned after multiple surgery or cryotherapy. If there is a large aqueous vein running through t ...
... eyes with thin, less rigid sclera such as buphthalmos and myopia. If the scleral flap does not provide adequate resistance, the eye will be hypotonous. It is important to remember that the limbus may be thinned after multiple surgery or cryotherapy. If there is a large aqueous vein running through t ...
Pediatric Cataract Management - All India Ophthalmological Society
... be left alone at least until the child reaches a developmental stage that permits reliable assessment of visual potential. The near vision should be monitored very closely in these cases. Posterior cortical cataracts (especially those resulting from posterior lenticonus) usually do not become visual ...
... be left alone at least until the child reaches a developmental stage that permits reliable assessment of visual potential. The near vision should be monitored very closely in these cases. Posterior cortical cataracts (especially those resulting from posterior lenticonus) usually do not become visual ...
Corneal Disorders Epi to Endo
... Congenital corneal anomaly with protrusion of posterior corneal surface usually localized region Usually sporadic and unilateral. probably a variant of anterior segment dysgenesis Clinical Features: often stromal scarring anterior to Descemet’s in area of protrusion Treatment is usually not ne ...
... Congenital corneal anomaly with protrusion of posterior corneal surface usually localized region Usually sporadic and unilateral. probably a variant of anterior segment dysgenesis Clinical Features: often stromal scarring anterior to Descemet’s in area of protrusion Treatment is usually not ne ...
Myopia and Myopia Control: Options and Outlooks
... this astigmatism is likely to be reduced by roughly twothirds between nine and twenty-one months of age.4 The emmetropization rate varies according to the magnitude of the prescription, with larger hyperopic and myopic refractive errors normalizing quicker. There is a significant and quick change to ...
... this astigmatism is likely to be reduced by roughly twothirds between nine and twenty-one months of age.4 The emmetropization rate varies according to the magnitude of the prescription, with larger hyperopic and myopic refractive errors normalizing quicker. There is a significant and quick change to ...
Scleral fixation of dislocated posterior chamber intraocular lenses
... scleral flap, a 20-gauge sclerotomy was made 1.25 mm posterior to limbus. A clear corneal incision was made approximately one-half clock hour counterclockwise from each fixation sclerotomy within the bed of the scleral flap (Figure 1). A standard 3-port PPV was performed with separate sclerotomies 3 ...
... scleral flap, a 20-gauge sclerotomy was made 1.25 mm posterior to limbus. A clear corneal incision was made approximately one-half clock hour counterclockwise from each fixation sclerotomy within the bed of the scleral flap (Figure 1). A standard 3-port PPV was performed with separate sclerotomies 3 ...
Corneal hysteresis and its relevance to glaucoma
... example, biomechanics. Initially, the biomechanical properties of the cornea were of interest primarily to refractive surgeons trying to understand keratoconus or risk factors for post-laser-assisted in-situ keratomileusis ectasia. Early work on this topic sought to identify Young’s modulus of the c ...
... example, biomechanics. Initially, the biomechanical properties of the cornea were of interest primarily to refractive surgeons trying to understand keratoconus or risk factors for post-laser-assisted in-situ keratomileusis ectasia. Early work on this topic sought to identify Young’s modulus of the c ...
Conjunctival melanoma and melanosis
... melanosis, exemplified by pigmented, keratinized squamous cell carcinoma on the temporal bulbar conjunctiva adjacent to the limbus. (a) Slit-lamp appearance. (b) Light micrograph stained with haematoxylin and eosin (Black arrow shows melanin within carcinoma; white arrow shows melanin in macrophages ...
... melanosis, exemplified by pigmented, keratinized squamous cell carcinoma on the temporal bulbar conjunctiva adjacent to the limbus. (a) Slit-lamp appearance. (b) Light micrograph stained with haematoxylin and eosin (Black arrow shows melanin within carcinoma; white arrow shows melanin in macrophages ...