Afferent and efferent pathways in the visual system of the freshwater
... Abstract: Afferent and efferent neural elements of the retina and central ganglia in the freshwater snail Planorbarius corneus were labelled using retrograde transport of neurobiotin through the optic nerve. Axons of at least some photoreceptor cells become direct contributors to the optic nerve as ...
... Abstract: Afferent and efferent neural elements of the retina and central ganglia in the freshwater snail Planorbarius corneus were labelled using retrograde transport of neurobiotin through the optic nerve. Axons of at least some photoreceptor cells become direct contributors to the optic nerve as ...
Interocular alignment following visual deprivation in the cat.
... Although torsional alignment may be measured with ease and precision in alert cats, assessment of the relative horizontal positions of the eyes in alert cats poses several problems. Efforts to develop a procedure equivalent to the cover test used in the assessment of strabismus in human subjects2' ' ...
... Although torsional alignment may be measured with ease and precision in alert cats, assessment of the relative horizontal positions of the eyes in alert cats poses several problems. Efforts to develop a procedure equivalent to the cover test used in the assessment of strabismus in human subjects2' ' ...
Lens and retina regeneration
... Lens regeneration has been studied for over a century, with the newt being the only adult animal that is capable of completely regenerating this complex organ [1,2]. The sheer unlimited regeneration potential of newt eyes following lens removal, even in older individuals, has established this system ...
... Lens regeneration has been studied for over a century, with the newt being the only adult animal that is capable of completely regenerating this complex organ [1,2]. The sheer unlimited regeneration potential of newt eyes following lens removal, even in older individuals, has established this system ...
OptimEyes
... By signing below, I acknowledge that the above information is filled out to the best of my ability. Signature______________________________________________________________________ ...
... By signing below, I acknowledge that the above information is filled out to the best of my ability. Signature______________________________________________________________________ ...
Chapter 7 Body Systems
... body is rotated or suddenly moved; able to detect changes both in direction and rate at which movement occurs (Figure 15-12) – Depends on functioning of cristae ampullaris, which are located in ampulla of each semicircular canal – Cupula—gelatinous cap in which hair cells of each crista are embedded ...
... body is rotated or suddenly moved; able to detect changes both in direction and rate at which movement occurs (Figure 15-12) – Depends on functioning of cristae ampullaris, which are located in ampulla of each semicircular canal – Cupula—gelatinous cap in which hair cells of each crista are embedded ...
soft toric Contact Lens Fitting - THE VISION CARE INSTITUTE®, LLC
... (TD) and centre thickness (tc) for a soft toric lens should be made in the same way as one would select a spherical soft design. The power of the lens should be chosen with the spherical and, more importantly, the cylindrical power and axis as close as possible to the predicted final lens parameters ...
... (TD) and centre thickness (tc) for a soft toric lens should be made in the same way as one would select a spherical soft design. The power of the lens should be chosen with the spherical and, more importantly, the cylindrical power and axis as close as possible to the predicted final lens parameters ...
Eye Specialty Group
... and practice management techniques. The user is strongly encouraged to review official instructions promulgated by the Centers for Medicare and Medicaid Services (CMS), and their Medicare administrative contractors; this document is not an official source nor is it a complete guide on all matters pe ...
... and practice management techniques. The user is strongly encouraged to review official instructions promulgated by the Centers for Medicare and Medicaid Services (CMS), and their Medicare administrative contractors; this document is not an official source nor is it a complete guide on all matters pe ...
Ocular Syphilis: New Challenges of an Old Disease
... What part of the eye is involved? • Every part of the eye can be involved during any stage of the infection • The vast majority of eye problems associated with syphilis are also associated with many other infectious and non-infectious diseases. – In other words, there are almost no eye findings tha ...
... What part of the eye is involved? • Every part of the eye can be involved during any stage of the infection • The vast majority of eye problems associated with syphilis are also associated with many other infectious and non-infectious diseases. – In other words, there are almost no eye findings tha ...
MULTIPLE CHOICE QUESTIONS: OPHTHALMOLOGY
... 72.A one-month old baby is brought with complaints of photophobia ...
... 72.A one-month old baby is brought with complaints of photophobia ...
Document - University of Houston College of Optometry
... i. Ideal for mildly irregular corneas – rule of thumb is they are suitable for 20/30 or better vision in specs ii. Appropriate for certain types of dry eye – exposure conditions 1. Not good for reduced tear production (hormonal, medication-related) b. Corneal GP i. Established wearers and mild to mo ...
... i. Ideal for mildly irregular corneas – rule of thumb is they are suitable for 20/30 or better vision in specs ii. Appropriate for certain types of dry eye – exposure conditions 1. Not good for reduced tear production (hormonal, medication-related) b. Corneal GP i. Established wearers and mild to mo ...
adjustable focus eyewear - the General Optical Council
... There is no evidence that any long-term damage to vision or health occurs from using eyeglasses with refractive powers that do not provide the sharpest focus for a particular task. Consumers routinely use OTC reading eyeglasses or out-of-date prescription eyeglasses when engaged in activities where ...
... There is no evidence that any long-term damage to vision or health occurs from using eyeglasses with refractive powers that do not provide the sharpest focus for a particular task. Consumers routinely use OTC reading eyeglasses or out-of-date prescription eyeglasses when engaged in activities where ...
Central Corneal Thickness: Important Considerate in Ophthalmic
... different ocular biometric parameters. CCT was on high in elderly individuals but there was no impact on CCT with increasing age. CCT was thinner in myopic individuals than hypermetropic. So it is important to do a detailed preoperative workup for such patient undergoing refractive and cataract surg ...
... different ocular biometric parameters. CCT was on high in elderly individuals but there was no impact on CCT with increasing age. CCT was thinner in myopic individuals than hypermetropic. So it is important to do a detailed preoperative workup for such patient undergoing refractive and cataract surg ...
in Cataract, Refractive, and Vitreoretinal Surgery
... are faster than ever, typically scheduling 35 eyes each day, with one crazy record: One surgeon performing 92 cases in 1 day. In a high-volume clinic like ours, the Victus femtosecond laser is an essential piece of equipment. In addition to its cataract surgery functions, which are described above, ...
... are faster than ever, typically scheduling 35 eyes each day, with one crazy record: One surgeon performing 92 cases in 1 day. In a high-volume clinic like ours, the Victus femtosecond laser is an essential piece of equipment. In addition to its cataract surgery functions, which are described above, ...
Selection-for-perception and selection-for-spatial-motor
... in the visual brain such selection processestake place (e.g. Allport 1993; PashIer 1997), bur the existenceof selection-for-visual-perceptionas a major attentionalfunction is undebated. A second function of attention refers to the motor action domain and was termed 'selectionfor-action' by Allport ( ...
... in the visual brain such selection processestake place (e.g. Allport 1993; PashIer 1997), bur the existenceof selection-for-visual-perceptionas a major attentionalfunction is undebated. A second function of attention refers to the motor action domain and was termed 'selectionfor-action' by Allport ( ...
Retinally-induced aniseikonia
... of patients17,18, not many eye care providers are currently equipped to manage aniseikonia. As the developer of the aniseikonia management software tool ‘The Aniseikonia Inspector’, I sometimes get requests from patients to investigate their aniseikonia (in collaboration with their eye care provide ...
... of patients17,18, not many eye care providers are currently equipped to manage aniseikonia. As the developer of the aniseikonia management software tool ‘The Aniseikonia Inspector’, I sometimes get requests from patients to investigate their aniseikonia (in collaboration with their eye care provide ...
Temporal characteristics of binocular rivalry: visual field
... set at full contrast, with the mean luminance at about 15 cd/m2 . The stimuli were presented on a white background with the luminance set at about 30 cd/m2 . A square frame surrounding each grating was used to help keeping two eyesÕ stimuli aligned (Fig. 1). 2.4. Experimental conditions All observer ...
... set at full contrast, with the mean luminance at about 15 cd/m2 . The stimuli were presented on a white background with the luminance set at about 30 cd/m2 . A square frame surrounding each grating was used to help keeping two eyesÕ stimuli aligned (Fig. 1). 2.4. Experimental conditions All observer ...
Ocular Application of Nerve Growth Factor Protects
... cells (RGCs) leads to optic nerve (ON) degeneration and vision loss. However, although the elevated intraocular pressure (EIOP) is considered a primary cause of the visual deficit, it is known that some patients still experience visual loss after lowering the IOP and others with GL and ON degeneratio ...
... cells (RGCs) leads to optic nerve (ON) degeneration and vision loss. However, although the elevated intraocular pressure (EIOP) is considered a primary cause of the visual deficit, it is known that some patients still experience visual loss after lowering the IOP and others with GL and ON degeneratio ...
Single Block Conjunctival Limbal Autograft for Unilateral Total
... by acidic (n = 3) or alkaline chemical agents (n = 2). Mean age of the patients was 32.3 ± 6.4 (range, 23‑42) years and the time interval between ocular surface damage and the limbal transplantation was more than 12 months in all cases. Patients had received classic CLAU from their healthy fe ...
... by acidic (n = 3) or alkaline chemical agents (n = 2). Mean age of the patients was 32.3 ± 6.4 (range, 23‑42) years and the time interval between ocular surface damage and the limbal transplantation was more than 12 months in all cases. Patients had received classic CLAU from their healthy fe ...
Epipalpebral conjunctival osseous choristoma
... thought that the lesion could be a result of embryological metaplasia. Because most of the tumours are discovered in infancy and are usually located between the lateral and superior rectus muscles, the congenital cause seems the most plausible. Epibulbar osseous choristomas are often confused clinic ...
... thought that the lesion could be a result of embryological metaplasia. Because most of the tumours are discovered in infancy and are usually located between the lateral and superior rectus muscles, the congenital cause seems the most plausible. Epibulbar osseous choristomas are often confused clinic ...
PDF Edition - Review of Ophthalmology
... professor of ophthalmology and medicine at the Icahn School of Medicine at Mount Sinai, and the lead author of the new study. “Their increased risk for age-related diseases in general led us to analyze how these patients are impacted by one of the most common age-related eye diseases, macular degene ...
... professor of ophthalmology and medicine at the Icahn School of Medicine at Mount Sinai, and the lead author of the new study. “Their increased risk for age-related diseases in general led us to analyze how these patients are impacted by one of the most common age-related eye diseases, macular degene ...
Failed Deep Anterior Lamellar Keratoplasty in Avellino Stromal
... macroperforations and extensive DM deposition. The rate of conversion from DALK to PKP was about 2.96%. Other studies have reported 0-14% conversion rate.8 A study by Unal et al. in 2013 had 94.6% cases of stromal dystrophy successfully treated with DALK out of which 35.3% had a recurrence. ...
... macroperforations and extensive DM deposition. The rate of conversion from DALK to PKP was about 2.96%. Other studies have reported 0-14% conversion rate.8 A study by Unal et al. in 2013 had 94.6% cases of stromal dystrophy successfully treated with DALK out of which 35.3% had a recurrence. ...
SightLine - Johns Hopkins Medicine
... ground-breaking festivities marked the turning point between vision and reality, the Wilmer Eye Institute’s emerging new home for outpatient surgery and research is making a strong statement. For those who will occupy the space, that statement, in every sense of the word, is light. Slated to open ne ...
... ground-breaking festivities marked the turning point between vision and reality, the Wilmer Eye Institute’s emerging new home for outpatient surgery and research is making a strong statement. For those who will occupy the space, that statement, in every sense of the word, is light. Slated to open ne ...
Retina Fellows` Forum - Medical Conference Planners International
... interest and expertise in universitycorporate technology transfer and early stage biomedical company development having either founded or served on the Boards of Directors of a number of successful medical drug and device companies. He has been a Director of OIS, Midlabs and Oculex Pharmaceuticals i ...
... interest and expertise in universitycorporate technology transfer and early stage biomedical company development having either founded or served on the Boards of Directors of a number of successful medical drug and device companies. He has been a Director of OIS, Midlabs and Oculex Pharmaceuticals i ...
Human eye
The human eye is an organ that reacts to light and has several purposes. As a sense organ, the mammalian eye allows vision. Rod and cone cells in the retina allow conscious light perception and vision including color differentiation and the perception of depth. The human eye can distinguish about 10 million colors.Similar to the eyes of other mammals, the human eye's non-image-forming photosensitive ganglion cells in the retina receive light signals which affect adjustment of the size of the pupil, regulation and suppression of the hormone melatonin and entrainment of the body clock.