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Chapter 9: The Sensory System
... 32. Describe the process in which sound waves are conducted to the spiral organ. Ans: Sound waves enter the auditory canal and vibrate the tympanic membrane, which vibrates the ossicles in the middle ear. The sound waves or vibrations are then sent through the oval window, making vibrations or wave ...
... 32. Describe the process in which sound waves are conducted to the spiral organ. Ans: Sound waves enter the auditory canal and vibrate the tympanic membrane, which vibrates the ossicles in the middle ear. The sound waves or vibrations are then sent through the oval window, making vibrations or wave ...
Rapid and sensitive diagnosis of fungal keratitis with direct PCR
... This study was aimed at developing a direct PCR assay without template DNA extraction for the rapid and sensitive diagnosis of infectious keratitis. Eighty corneal scrapings from 67 consecutive patients with clinically suspected infectious keratitis were analysed prospectively. Direct PCR was perfor ...
... This study was aimed at developing a direct PCR assay without template DNA extraction for the rapid and sensitive diagnosis of infectious keratitis. Eighty corneal scrapings from 67 consecutive patients with clinically suspected infectious keratitis were analysed prospectively. Direct PCR was perfor ...
Intraocular lens calculation accuracy limits in normal eyes
... central thickness, refractive index) was used for all calculations. Postoperative lens position was predicted by a simple scaling model based on measurements in 1 patient collective. The model was compared with 2 other approaches in 2 patient collectives at 2 hospitals (1121 eyes with 13 IOL models; ...
... central thickness, refractive index) was used for all calculations. Postoperative lens position was predicted by a simple scaling model based on measurements in 1 patient collective. The model was compared with 2 other approaches in 2 patient collectives at 2 hospitals (1121 eyes with 13 IOL models; ...
REVIEW ARTICLE Vernal keratoconjunctivitis
... atopic conditions in this report. The presence of eczema with eye involvement could lead to consider the diagnosis atopic keratoconjunctivitis (AKC). VKC and AKC are ocular allergic diseases involving both IgE and non-IgE mechanisms which share several common signs and symptoms. The presence of ecze ...
... atopic conditions in this report. The presence of eczema with eye involvement could lead to consider the diagnosis atopic keratoconjunctivitis (AKC). VKC and AKC are ocular allergic diseases involving both IgE and non-IgE mechanisms which share several common signs and symptoms. The presence of ecze ...
Corneal Degenerations
... – Metallic foreign body – Granular, white anterior stromal – Associated with residual iron deposition in Bowman’s/ anterior stroma ...
... – Metallic foreign body – Granular, white anterior stromal – Associated with residual iron deposition in Bowman’s/ anterior stroma ...
The aging human lens: structure, growth, and physiological behaviour
... The membrane mechanisms underlying the ionic imbalances of cortical cataracts have been investigated in detail by applying a combination of electrophysiological and radioisotope techniques to lenses that have been removed by intracapsular surgery.43 44 Since all of the cells within the lens are norm ...
... The membrane mechanisms underlying the ionic imbalances of cortical cataracts have been investigated in detail by applying a combination of electrophysiological and radioisotope techniques to lenses that have been removed by intracapsular surgery.43 44 Since all of the cells within the lens are norm ...
MIOSTAT - Medsafe
... Aseptically remove the sterile vial from the blister package by peeling the backing paper and dropping the vial onto a sterile tray. Withdraw the contents into a dry sterile syringe and replace the needle with an atraumatic cannula prior to intraocular irrigation. No more than one-half mL should be ...
... Aseptically remove the sterile vial from the blister package by peeling the backing paper and dropping the vial onto a sterile tray. Withdraw the contents into a dry sterile syringe and replace the needle with an atraumatic cannula prior to intraocular irrigation. No more than one-half mL should be ...
Correlation of Aberrations With Visual Symptoms Using Wavefront
... that larger apertures had more aberrations, especially in eyes after LASIK, because the peripheral area of the laser treatment was captured and measured. When correlating visual symptoms with higher order aberrations, double vision was associated with horizontal coma at all pupil sizes analyzed, and ...
... that larger apertures had more aberrations, especially in eyes after LASIK, because the peripheral area of the laser treatment was captured and measured. When correlating visual symptoms with higher order aberrations, double vision was associated with horizontal coma at all pupil sizes analyzed, and ...
Uveitis
... Steroids arent effective and not prescribed,catarct surgery is done when indicated,and patients usually respond well ...
... Steroids arent effective and not prescribed,catarct surgery is done when indicated,and patients usually respond well ...
View PDF
... In treating myopic refractive errors, the laser ablation is deepest in the central cornea, which is also the area of the cornea that is thinnest. Most flap research is mainly focused on this central portion of the flap and stromal bed10. However, decreased post-operative visual performance such as g ...
... In treating myopic refractive errors, the laser ablation is deepest in the central cornea, which is also the area of the cornea that is thinnest. Most flap research is mainly focused on this central portion of the flap and stromal bed10. However, decreased post-operative visual performance such as g ...
Central Corneal Thickness (CCT)
... we could not obtain a statistically significant result (p value >0.05). They also reported that there is no significant difference between POAG (543 microns; SD=35) and normal subjects (552microns; SD=35) which was similar to the present study [11]. A study done by Anupama C. Shetgar et al was simil ...
... we could not obtain a statistically significant result (p value >0.05). They also reported that there is no significant difference between POAG (543 microns; SD=35) and normal subjects (552microns; SD=35) which was similar to the present study [11]. A study done by Anupama C. Shetgar et al was simil ...
Vision for Learning (Part II)
... children, with about 5% of children requiring treatment for this problem”. According to the Children’s Vision Information Network (2013a, paras. 1, 2, 4), amblyopia is the result of one eye failing to develop normally as the result of the brain supressing its use in favour of the other eye, and ther ...
... children, with about 5% of children requiring treatment for this problem”. According to the Children’s Vision Information Network (2013a, paras. 1, 2, 4), amblyopia is the result of one eye failing to develop normally as the result of the brain supressing its use in favour of the other eye, and ther ...
Care and Maintenance of GP Contact Lens
... – the amount of lipid appeared to be independent of: • the material used • the presence or absence of surface treatment – some differences in lipid layer patterns were noted between materials ...
... – the amount of lipid appeared to be independent of: • the material used • the presence or absence of surface treatment – some differences in lipid layer patterns were noted between materials ...
Academic paper: Persistent hyperplastic primary vitreous: Diagnosis
... hyaloid vascular system. At this point, these two primitive structures occupy a constricted zone in the middle of the secondary vitreous.4 This remnant of the primary vitreous is attached posteriorly around the optic disc and extends anteriorly through the secondary vitreous, where it is referred to ...
... hyaloid vascular system. At this point, these two primitive structures occupy a constricted zone in the middle of the secondary vitreous.4 This remnant of the primary vitreous is attached posteriorly around the optic disc and extends anteriorly through the secondary vitreous, where it is referred to ...
Changes in the internal structure of the human crystalline lens with
... turned to the centre of the pupil. Because of limited range of movement of the Maltese star, it was not possible to correct for convergence when accommodation levels were higher than 8 D, and consequently, those levels were not measured. Using the position and power of the different lenses placed in ...
... turned to the centre of the pupil. Because of limited range of movement of the Maltese star, it was not possible to correct for convergence when accommodation levels were higher than 8 D, and consequently, those levels were not measured. Using the position and power of the different lenses placed in ...
Yet To Receive
... a successful alternative to cryopexy in creating chorioretinal adhesion for scleral buckle surgery b) Need for drainage of subretinal fluid? Drainage of subretinal fluid is one of the debatable issues in scleral buckling. As this step is almost a blind procedure it is not free from potential compli ...
... a successful alternative to cryopexy in creating chorioretinal adhesion for scleral buckle surgery b) Need for drainage of subretinal fluid? Drainage of subretinal fluid is one of the debatable issues in scleral buckling. As this step is almost a blind procedure it is not free from potential compli ...
The Pax-6 homeobox gene is expressed throughout the
... beyond its boundaries. As the center of the lens placembryos were dissected in ice-cold phosphate-bufode invaginates to form the lens vesicle, the peripheral fered saline and fixed overnight in MEMFA at 4°C. ectoderm remaining on the surface shows substantial Stage 18 embryos were processed for whol ...
... beyond its boundaries. As the center of the lens placembryos were dissected in ice-cold phosphate-bufode invaginates to form the lens vesicle, the peripheral fered saline and fixed overnight in MEMFA at 4°C. ectoderm remaining on the surface shows substantial Stage 18 embryos were processed for whol ...
PDF (CSN_CH6)
... We are interested not only in the behavior of the fibers under high loads, but also under physiologically-relevant loads; therefore, we focus on both the linear and the failure regimes. While true moduli cannot be obtained from the linear regime, relative differences in this regime can be used to as ...
... We are interested not only in the behavior of the fibers under high loads, but also under physiologically-relevant loads; therefore, we focus on both the linear and the failure regimes. While true moduli cannot be obtained from the linear regime, relative differences in this regime can be used to as ...
A text book on Optics and Refraction 1
... In recent years there have been significant advances in eye care, both in technology and in the increasing resolution to address the scourge of needless blindness. Achievements in medical technology have vastly improved diagnosis, treatment and surgery in all aspects of eye care, and efforts like th ...
... In recent years there have been significant advances in eye care, both in technology and in the increasing resolution to address the scourge of needless blindness. Achievements in medical technology have vastly improved diagnosis, treatment and surgery in all aspects of eye care, and efforts like th ...
The patient + doctor - Emory Eye Center
... training. “One of the first things I started learning,” Carswell says, “was how to look at a glass of water, focus on it, and ...
... training. “One of the first things I started learning,” Carswell says, “was how to look at a glass of water, focus on it, and ...
Femtosecond Laser Assisted Cataract Surgery (FLACS): An overview
... ABSTRACT: Age-related cataract is one of the most important causes of visual impairment, and cataract surgery is one of the commonest surgeries performed worldwide. Femtosecond laser assisted cataract surgery (FLACS) is a new and promising technology in the arena of cataract operations. Femtosecond ...
... ABSTRACT: Age-related cataract is one of the most important causes of visual impairment, and cataract surgery is one of the commonest surgeries performed worldwide. Femtosecond laser assisted cataract surgery (FLACS) is a new and promising technology in the arena of cataract operations. Femtosecond ...
Correlation between Central Corneal Thickness, Intraocular
... structurally and functionally, is important for diagnosis and treatment. It has been proved by Li et al., that RTVue-OCT may provide objective, quantitative, and reproducible images of the ONH and RNFL thickness in glaucoma [7] . The cornea and sclera form the continuous collagen coat of the eye. In ...
... structurally and functionally, is important for diagnosis and treatment. It has been proved by Li et al., that RTVue-OCT may provide objective, quantitative, and reproducible images of the ONH and RNFL thickness in glaucoma [7] . The cornea and sclera form the continuous collagen coat of the eye. In ...
HERPES SIMPLEX UVEITIS Lijing Yao, MD Agha Hassan Feroze
... The diagnosis of HSV uveitis is made clinically, primarily based on a comprehensive medical and ophthalmologic history as well as a thorough ophthalmologic examination. All ocular inflammatory disorders that present a feature of recurrent unilateral uveitis with characteristic corneal epithelial ulc ...
... The diagnosis of HSV uveitis is made clinically, primarily based on a comprehensive medical and ophthalmologic history as well as a thorough ophthalmologic examination. All ocular inflammatory disorders that present a feature of recurrent unilateral uveitis with characteristic corneal epithelial ulc ...
The patient + doctor - Woodruff Health Sciences Center
... Although the treatment hasn’t been easy, Lori has coped heroically with its ups and downs. Her family’s comfortable relationship with Yeh has helped banish the fear that used to make Lori shake with dread before even a routine eye appointment. Lori, who briefly saw Emory Eye’s Baker Hubbard before b ...
... Although the treatment hasn’t been easy, Lori has coped heroically with its ups and downs. Her family’s comfortable relationship with Yeh has helped banish the fear that used to make Lori shake with dread before even a routine eye appointment. Lori, who briefly saw Emory Eye’s Baker Hubbard before b ...
Keratoconus
![](https://commons.wikimedia.org/wiki/Special:FilePath/Keratoconus_eye.jpg?width=300)
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.