Tear Interferometric Patterns Reflect Clinical Tear
... A multicolor interferometric fringe was essentially observed only at an LLT of >70 nm. CONCLUSIONS. Tear interferometry was able to reliably distinguish clinical subtypes of dry eye by reflecting the balance between the lipid and aqueous layers of the tear film. Keywords: tear interferometry, dry ey ...
... A multicolor interferometric fringe was essentially observed only at an LLT of >70 nm. CONCLUSIONS. Tear interferometry was able to reliably distinguish clinical subtypes of dry eye by reflecting the balance between the lipid and aqueous layers of the tear film. Keywords: tear interferometry, dry ey ...
Is there a relationship between prism fusion range and vergence
... Table 1 displays the VF and PFR measurements of all 28 subjects. Fig. 1 shows the VF measurements plotted against the: (a) BO PFR to blur point; (b) BO PFR to break point; and (c) BI PFR to break point. The Pearson product–moment correlation coefficient, r, shows that no statistically significant co ...
... Table 1 displays the VF and PFR measurements of all 28 subjects. Fig. 1 shows the VF measurements plotted against the: (a) BO PFR to blur point; (b) BO PFR to break point; and (c) BI PFR to break point. The Pearson product–moment correlation coefficient, r, shows that no statistically significant co ...
Correlation between epithelial thickness in normal
... systems are mainly contact (and thus require local corneal anesthesia), whereas B-scan systems involve scanning. The latter are advantageous over the former, which suffer from variability largely related to decentration, oblique incidence which may cause spuriously thicker measurements, possible cor ...
... systems are mainly contact (and thus require local corneal anesthesia), whereas B-scan systems involve scanning. The latter are advantageous over the former, which suffer from variability largely related to decentration, oblique incidence which may cause spuriously thicker measurements, possible cor ...
Contour Integration Deficits in Anisometropic Amblyopia
... interocular acuity differences ranged between 0.1 and 1.0 log units, with the average interocular difference being 0.51 log units (a factor of 3). Contour detection thresholds differed between the eyes by an average of 0.13 ⌬ units, which is significantly different from no interocular difference (P ...
... interocular acuity differences ranged between 0.1 and 1.0 log units, with the average interocular difference being 0.51 log units (a factor of 3). Contour detection thresholds differed between the eyes by an average of 0.13 ⌬ units, which is significantly different from no interocular difference (P ...
Amniotic Membrane Transplantation for Exuberant Bleb Following
... However, failure of filtration due to extensive scarring, ptosis, and diplopia due to damage of the levator superioris or superior rectus muscle complex are the drawbacks of these methods. Eighteen percent of these cases need two or more bleb revisions. Preserved human amniotic membrane transplantat ...
... However, failure of filtration due to extensive scarring, ptosis, and diplopia due to damage of the levator superioris or superior rectus muscle complex are the drawbacks of these methods. Eighteen percent of these cases need two or more bleb revisions. Preserved human amniotic membrane transplantat ...
Nystagmus1 - Dr. Kumar Saurabh
... VOLUNTARY NYSTAGMUS Ocular flutter under voluntary control. Usually horizontal. May be vertical, torsional or cycloid. Patient converges to initiate the ‘nystagmus’. Can be sustained up to 30 seconds. ...
... VOLUNTARY NYSTAGMUS Ocular flutter under voluntary control. Usually horizontal. May be vertical, torsional or cycloid. Patient converges to initiate the ‘nystagmus’. Can be sustained up to 30 seconds. ...
Binocular coordination of saccades in children with vertigo
... would be the result of learning and visual experience. This debate has been reactivated in the last twenty years as behavioral and physiological studies on saccade and vergence interaction revealed that saccades can become largely unequal in the two eyes when a change is required both in direction a ...
... would be the result of learning and visual experience. This debate has been reactivated in the last twenty years as behavioral and physiological studies on saccade and vergence interaction revealed that saccades can become largely unequal in the two eyes when a change is required both in direction a ...
The child, measles and the eye - Measles and Rubella Initiative
... to measles are health care disasters that simply should not occur. Measles is a highly infectious disease preventable by immunization. Reducing deaths due to measles is a global health priority. Immunized children rarely get measles and the cost of immunization is low. The road to good health is als ...
... to measles are health care disasters that simply should not occur. Measles is a highly infectious disease preventable by immunization. Reducing deaths due to measles is a global health priority. Immunized children rarely get measles and the cost of immunization is low. The road to good health is als ...
Refractive changes in nuclear, cortical and posterior subcapsular
... optimal compensation with cataract. We evaluated the differences between compensations. Results: A significant myopic shift was observed in nuclear cataract from low to mild grade (p = 0.031), the same as for PSC cataract from mild to advanced grade (p = 0.025). No significant changes were found for ...
... optimal compensation with cataract. We evaluated the differences between compensations. Results: A significant myopic shift was observed in nuclear cataract from low to mild grade (p = 0.031), the same as for PSC cataract from mild to advanced grade (p = 0.025). No significant changes were found for ...
Correlation Between AC/A Ratio and Ciliary Muscle Morphology in
... eye deviation while looking at optical infinity and the deviation while looking at near ...
... eye deviation while looking at optical infinity and the deviation while looking at near ...
Understanding Albinism
... essential that children are encouraged to try as many activities as possible and that they are given the opportunity to find out what sports they enjoy. Many hobbies and interests are possible with the use of an appropriate simple low vision aid such as a monocular for watching football or rugby. I ...
... essential that children are encouraged to try as many activities as possible and that they are given the opportunity to find out what sports they enjoy. Many hobbies and interests are possible with the use of an appropriate simple low vision aid such as a monocular for watching football or rugby. I ...
Effect of bright light on the transient changes of choroidal thickness
... to 4PM and kept under “normal” laboratory light during the remaining time of the light phase (500 lux, 8AM to 6PM, N=14) for 5 days. In contrast, a control group was kept in “normal light” (500 lux) during the entire light phase (N=14). Choroidal thickness in the posterior pole of right eyes was mea ...
... to 4PM and kept under “normal” laboratory light during the remaining time of the light phase (500 lux, 8AM to 6PM, N=14) for 5 days. In contrast, a control group was kept in “normal light” (500 lux) during the entire light phase (N=14). Choroidal thickness in the posterior pole of right eyes was mea ...
Transient Drug-Induced Myopia - Latest published research reports
... plus power for the length of eye. As a result, images of distant objects are focused in front of the retina and thus appear blurred. Myopia has been recognized as a distinct visual disability for millennia and has been known for more than 2000 years and was first described by the ancient Greeks [6,7 ...
... plus power for the length of eye. As a result, images of distant objects are focused in front of the retina and thus appear blurred. Myopia has been recognized as a distinct visual disability for millennia and has been known for more than 2000 years and was first described by the ancient Greeks [6,7 ...
Images Magazine 2013 Issue 1 - Bascom Palmer Eye Institute
... 1965, John T. Flynn, M.D., saw many pediatric patients and launched a treatment program for amblyopia (“lazy eye”). Flynn also began looking at retinopathy of prematurity (ROP), known in the 1960s as retrolental fibroplasia, a condition that causes abnormal development of blood vessels in the retina ...
... 1965, John T. Flynn, M.D., saw many pediatric patients and launched a treatment program for amblyopia (“lazy eye”). Flynn also began looking at retinopathy of prematurity (ROP), known in the 1960s as retrolental fibroplasia, a condition that causes abnormal development of blood vessels in the retina ...
Correction of ocular and atmospheric wavefronts: a
... to compare the performance of eight commercially available deformable mirrors for these tasks. The performance is studied as a function of the size of the optical pupil relative to the actuated area of the mirrors and as a function of the number of modes corrected. In the ocular case it is found tha ...
... to compare the performance of eight commercially available deformable mirrors for these tasks. The performance is studied as a function of the size of the optical pupil relative to the actuated area of the mirrors and as a function of the number of modes corrected. In the ocular case it is found tha ...
The Critical Period for Ocular Dominance Plasticity in the Ferret`s
... repetitions, and runs. Images were then normalized either to the average of the four blank images (blank normalized) or to the average of all conditions except the blanks (cocktail-blank normalized). Ferret V1 is highly vascularized; areas of the image with vascular artifacts were removed by overlay ...
... repetitions, and runs. Images were then normalized either to the average of the four blank images (blank normalized) or to the average of all conditions except the blanks (cocktail-blank normalized). Ferret V1 is highly vascularized; areas of the image with vascular artifacts were removed by overlay ...
NYSTAGMUS - Schor Lab Home Page
... Slow phase is always toward primary position. Prolonged attempts to deviate gaze will often show a reduction in nystagmus amplitude. When the patient then returns gaze to primary position, there may be a Rebound Nystagmus with fast phase in the opposite direction. Vestibular Nystagmus: When an imbal ...
... Slow phase is always toward primary position. Prolonged attempts to deviate gaze will often show a reduction in nystagmus amplitude. When the patient then returns gaze to primary position, there may be a Rebound Nystagmus with fast phase in the opposite direction. Vestibular Nystagmus: When an imbal ...
The Main Sequence, A Tool for Studying Human Eye
... forces, the velocity will increase. Only after the agonist force starts to drop from its maximum to the tonic level will the velocity decrease. Therefore, the peak velocity should be reached around the end of the controller signal pulse, which should occur about in the middle of the saccade.3 This a ...
... forces, the velocity will increase. Only after the agonist force starts to drop from its maximum to the tonic level will the velocity decrease. Therefore, the peak velocity should be reached around the end of the controller signal pulse, which should occur about in the middle of the saccade.3 This a ...
Dr. Harbansh Lal - All India Ophthalmological Society
... both types of pumps. Additionally thick wide bore tubing is required for the rollers to be effective in a peristaltic pump. While the rollers are rotating, there is no occlusion and no collapse of tubing. When occlusion occurs, vacuum builds up, the rollers stop and negative pressure is generated wi ...
... both types of pumps. Additionally thick wide bore tubing is required for the rollers to be effective in a peristaltic pump. While the rollers are rotating, there is no occlusion and no collapse of tubing. When occlusion occurs, vacuum builds up, the rollers stop and negative pressure is generated wi ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
... factors.If we say that myopia is heredity than it will be not correct because as we have seen in many researches that in many other countries, where both parents are myopic but still the baby is emmetropic, so it is wrong to say that myopia is strongly associated with genetic only, there are other f ...
... factors.If we say that myopia is heredity than it will be not correct because as we have seen in many researches that in many other countries, where both parents are myopic but still the baby is emmetropic, so it is wrong to say that myopia is strongly associated with genetic only, there are other f ...
Effects of contrast inversion on face perception depend on gaze
... Kemp, Pike, White, & Musselman, 1996; Liu, Collin, Burton, & Chaudhuri, 1999; Liu, Collin, & Chaudhuri, 2000; Russell, Sinha, Biederman, & Nederhouser, 2006). The eye region in particular contains contrast-related signals that are relevant for face recognition. For this reason, the eyes may be prior ...
... Kemp, Pike, White, & Musselman, 1996; Liu, Collin, Burton, & Chaudhuri, 1999; Liu, Collin, & Chaudhuri, 2000; Russell, Sinha, Biederman, & Nederhouser, 2006). The eye region in particular contains contrast-related signals that are relevant for face recognition. For this reason, the eyes may be prior ...
Correlation of Central Corneal Thickness and Axial Length in
... Aresti A, Piñero-Llorens DP. Relationship among corneal biomechanics, refractive error, and axial length. Optom Vis Sci 2014;91:507-13. ...
... Aresti A, Piñero-Llorens DP. Relationship among corneal biomechanics, refractive error, and axial length. Optom Vis Sci 2014;91:507-13. ...
Cataract surgery guidelines - the Royal College of Ophthalmologists
... UK.2-9 The North London Eye Study provides prevalence data specifically for visually impairing cataract (i.e. Snellen visual acuity less than 6/12 that is attributable to a lens opacity) in one or both eyes in a random sample of 1547 people of 65 years and over in an outer metropolitan district.5 Ov ...
... UK.2-9 The North London Eye Study provides prevalence data specifically for visually impairing cataract (i.e. Snellen visual acuity less than 6/12 that is attributable to a lens opacity) in one or both eyes in a random sample of 1547 people of 65 years and over in an outer metropolitan district.5 Ov ...
Eyeglass prescription
An eyeglass prescription is an order written by an eyewear prescriber, such as an optometrist or ophthalmologist, that specifies the value of all parameters the prescriber has deemed necessary to construct and/or dispense corrective lenses appropriate for a patient.If an examination indicates that corrective lenses are appropriate, the prescriber generally provides the patient with an eyewear prescription at the conclusion of the exam. In the United States, the FTC (Federal Trade Commission) requires eyewear prescribers to give each patient a copy of their prescription, immediately following an exam, even if the patient doesn't ask for a copy.The parameters specified on spectacle prescriptions vary, but typically include the power to which each lens should be made in order to correct blurred vision due to refractive errors, including myopia, hyperopia, astigmatism, and presbyopia. It is typically determined using a phoropter and asking the patient which of two lenses is better, or by computer automated refractor, or through the technique of retinoscopy. A dispensing optician will take a prescription written by an optometrist or ophthalmologist and order and/or assemble the frames and lenses to then be dispensed and sold to the patient.