Scientific Program

Conference Series Ltd invites all the participants across the globe to attend World Congress and Expo on Optometry and Vision Science
(10 Plenary Forums - 1Event) Chicago,USA.

Day 2 :

OMICS International World Optometry 2017 International Conference Keynote Speaker Chiristine Allision photo
Biography:

Christine Allison is a Fellow of the American Academy of Optometry, a Fellow of the College of Optometrists in Vision Development (COVD), and an American Academy of Optometry Diplomate in Binocular Vision, Perception and Pediatric Optometry, and a Distinguished Scholar and Fellow in the National Academies of Practice. She is the Clinical Director for the Illinois Special Olympics Lions Club International Opening Eyes Program, as well as a Regional Clinical Advisor for this program. She is the President-elect for COVD as well as the Illinois Optometric Association. She has published numerous articles, and given many presentations and lectures both nationally and internationally.

Abstract:

Purpose: The purpose of this longitudinal study was to analyze eye movement data related to birth order in a group of children upon entering Kindergarten, and then again upon entering 3rd grade. We have previously reported on a significant difference in eye movements among the pre-Kindergarten groups of children with no siblings, first born with siblings, and children who are not first born and have siblings. The findings have led to the theory that first born children and children with no siblings may exhibit better saccades and fixation control prior to entering Kindergarten due to differences in the type of activities they pursue. Once children are in school, their activities are more regulated, thus we theorized that the same children prior to entering 3rd grade would not show a significant difference in eye movements.

 

Methods: 112 children with similar academic/socioeconomic backgrounds were examined in the summer prior to Kindergarten. 33 of the same children have been examined again upon entering 3rd grade. The children were given comprehensive exams including tests of accommodation and vergence. The children also received eye-movement analysis with the Visagraph protocol. The caregivers completed a survey regarding the number/ages of siblings, prior school history, and amount of time spent on tasks like reading, using computers, and playing outdoors.

 

Results: Children in the pre-Kindergarten group who were first born exhibited better fixation control with fewer off-target drifts (F 6.09, p≤0.05) and more efficient horizontal saccades (F 5.96, p<0.05). The Bland-Altman analysis of the 3rd grade group indicated good agreement among all groups for saccadic accuracy, saccadic speed, fluency, and fixation accuracy.

 

Conclusions: The activities that first born children are encouraged to perform regularly prior to Kindergarten may lead to better eye movement skills at that age. However, by 3rd grade, a child is using eye-movements to learn, and uses visual tracking, saccadic sequencing and reading fluency to read at a higher level. Our data suggests that the first born group continues to have moderately improved eye-movement performance compared with the others, but not significantly better. The children in this study will be re-evaluated prior to 6th grade to determine if any new trends with eye movements or binocular stability develop.

Keynote Forum

Jose Luis Monroy

Keynote: Scleral lenses, Mexican experience

Time : 10:45-11:30

OMICS International World Optometry 2017 International Conference Keynote Speaker Jose Luis Monroy photo
Biography:

José Luis Monroy is an Optometrist and graduate of La Salle University in Colombia (1987). He is experienced in eye-care business and professional in Optical/Ophthalmologic and Optometry industry channels in Latin-America with 29 years of clinical, academic and business experience. He is actually a Senior Clinical Optometrist and Researcher at Unidad Oftalmológica del Valle in México City. He is the Commercial Director of Yolia Health and the Academic Director of the Institute of Continuing Education in Optometry in Mexico. He is the Professor of Graduate Contact Lens Fitting Post Refractive Surgery at Universidad Nacional Autonoma de México (UNAM). He is the President and Founder of the Latin-American Association of Contact Lens and Cornea.

Abstract:

Statement of the Problem: Keratoconus is a progressive and idiopathic disease in which the cornea develops into an irregular and conic shape. The clinical signs include thinning of the cornea in its central or paracentral region, an apical protrusion that results an irregular astigmatism, and this condition can progress. Keratoconus is the most common form of dystrophy or corneal ectasia, with an incidence of 50–230 per 100,000 persons. In Mexico, the research on keratoconus is scarce; the articles published show statistics that are similar to those in international literature, which indicates a higher prevalence in male patients with a mean age of 24.5 years. The incidence is about 1/2000 people in the general population in Mexico. Medical management with scleral lenses is a viable treatment for vision rehabilitation.
 
Methodology & Theoretical Orientation: Retrospective, cross-sectional, observational, descriptive study of 66 patients with diagnosis of keratoconus and other secondary ectasias post refractive surgery was done; and for those who were followed from 2014, we are fitting them with scleral contact lenses.
 
Findings: We have found two particular situations in patients fitted with scleral lenses in Mexico: in 80% of cases a significant impingement occurs in the scleral area with lens diameter of 15.8 mm and above, and due to this, peripheral areas need proper for better alignment of the edge with the sclera or smaller diameters. The other situation is that in 34% of cases the adjustments to the front surface due to the presence of residual astigmatism resolving this situation with toric designs have been made. 
 
Conclusion & Significance: Scleral lenses provide excellent vision correction and superior comfort compared to traditional contact lens options for the management of keratoconus and other ectasias post refractive surgery. In most of cases scleral lenses provide a really visual rehabilitation. Scleral lens should be considered before surgical intervention. However, lens designs should be improved especially in the landing zone.
 

  • Advanced Vision Science | Clinical Optometry | Cognitive Vision

Session Introduction

Maria Soledad Romero

Total Vision, USA

Title: Trends in the treatment of presbyopia
Biography:

Maria Soledad Romero is an Ophthalmologist focusing on Anterior Segment Surgery. She completed her Residency in Ophthalmology at LSU/Ochsner and then joined the Wilmer Eye Institute at Johns Hopkins University, where she was an Assistant Professor in the Comprehensive Ophthalmology Service.

Abstract:

Presbyopia is an aging process of the crystalline lens, and ciliary muscle that limits the ability of achieving adequate near sightedness. Prevalence studies report that it is more common in females and in developed communities. Presbyopia has a high impact on quality of life, as well as, increasing concomitant financial costs. The purpose of this review is to examine and help the audience to better understand the current trends in presbyopia therapy. A detailed review of the FDA approved and off-label therapies was performed. Studies performed overseas were also a part of this review. The different modality therapies involved in this review involves standard glasses, contact lens corrections, topical instillation of eye drops, as well as, surgical approaches such as refractive surgery, refractive surgery combined with intraocular implants, intraocular surgery, and corneal inlays and onlays. A discussion will also be held regarding better customized treatment for those patients with underlying ocular pathology.

Biography:

Daniel Valverde is Specialised in Medical Retina, Ocular Nutrition Low Vision, Vision Pediatric, Public Health Community Development Projects in Public Health. He is the Faculty of Medical Sciences at University of Guayaquil and completed Fellow in Public Health by Interamerican University of Puerto Rico, School of Optometry – USA and is furthur continuing his education at The New England College of Optometry, Boston, USA. He is also a PhD candidate at Atlantic International University - Honolulu –USA.  He is member of the AOA American Optometric Association, International Council of Ophthalmology, Ophthalmic Education Committee, Ocular Nutrition Society USA, OSH, as well as President Lecturer in North America, Central America, South America, Europe, Asia.

Abstract:

The immune system to fully renew itself does so in an average of four months, it is important that at the end of its renovation, all cells have activated its action memory of recognizing and rejecting the anitgens causing the imbalance of health. Something as simple as that at birth the child has not properly matured his immune system. Results in a child with high probability of having allergic disorders, hyperactivity, and fragility of the immune system causing many pediatric diseases, aggressively attack. The imbalance of the immune system making it strong through an auxiliary therapy with strong transfer factors not only allows us to make this patient stronger against the attack of: microorganisms, bacteria, protozooids, fungi, and even cancer, but also helps us to overcome neuromuscular alterations and visual alterations caused by the stress of the immune system or its effect aggravated by this situation. In hyperactive patients, the whole neuromuscular system is also stressed and causes hairs, which produce aggravated symptomatology in hypermetropic patients mainly, but also in myopic patients; in these patients the most common characteristic is that when they are evaluated, they are very restless during the period of the evidence, often giving false results. When the situation of hyperactivity is managed, tests can be performed with more reliable results, and with better post-therapy results, the change is radical both in their visual and ocular health. The approach of this subject is not very common and we are consolidating more complete reports with a greater and appropriate studied, for considering fellow researchers and restless to know and develop new tools in the treatment of visual and ocularees problems. Here is the motivation to share this research with you in the hope of applying it in every pediatric consultation to be developed.

Biography:

Jiahua Kou has received his Bachelor’s degree in 2014 from Tianjin University and is currently studying for his Master’s degree at Tsinghua University. His main research orientations are medical instruments and blood coagulation testing ..

Abstract:

Statement of the Problem: Surface topographic measurement plays an increasingly significant role in optical measurement, such as automatic visual inspection, ultra-precision manufacturing and other fields. The latest hard drives and optical instruments require the chips with ultra-fine surfaces, as well as the corresponding detecting technique to carry out online measurement and monitor the relevant parameters. The phase-shifting interferometry is one of the most widely applied technique of which the principle is introducing time modulation into the phase difference of two beams of coherent light. By the photoelectric detector the phase can be demodulated from the interference pattern via considerable phase-unwrapping algorithms. However, the inevitable noise leads to the error and distortion of several points in the phase diagram.

 

Methodology & Theoretical Orientation: We propose a K-means clustering unwrapping algorithm for the error reduction. Based on "bad points" to avoid the path integral, our algorithm can complete the three-dimensional morphology online. Compared with the traditional algorithms which might result in failure to unwrap when the reference points happen to be noise points, our algorithm is put forward to extract independent noise areas, such as faults, holes, etc. and can separate the effective phase information by using the clustering analysis. The detailed algorithm is as follows: (1) Giving pixel gray difference T of each cluster center, and then calculating the clustering parameter K based on the interference pattern; (2) Considering K and the gray values g of each pixel as variables and analyzing the pixel set G in clustering process; (3) Establish the original image index matrix, generating new clustering image by replacing the original pixel values with new clustering centroids and separating independent noise area according to the distance d and weight τ and (4) Completing the unwrapping calculation.

 

Conclusion & Significance: We build the surface topographic experiment system and the error has been successfully made less than 0.004 µm. Therefore, the K-means clustering unwrapping algorithm, of which the result is compared to that of the calibration equipment, has been valid. Consequently, the relevant online measurement can be more accurate.

 

Biography:

Worked at OPTICO-OPTOMETRISTA. Studied at Universidade Braz Cubas - Mogi das Cruzes, Brazil
 

Abstract:

Visual Therapy with Photon Therapy and Bioenergetics, Improvement in Visual Acuity, Low Vision, Abliopia, Catagara and Macular Degeneration, Photon Platinum is a mass of 3 metals composed of aluminum, titanium and platinum, resulting in permanent radiation, identical to the most beneficial Of solar radiation. This radiation produces rotational and vibratory movements to the water molecules of our body, generating a permanent process of fragmentation of these molecules, which causes the water (which constitutes 60 percent of the human body) to circulate better through Of cells, thus promoting a constant process of cell detoxification. "This results in the fact that photon-platinum radiation facilitates adhesion and osmosis of water molecules across the cell membrane." The three metals fused at 1000 degrees (reduced to microscopic particles) are embedded in fabrics or other materials that we bring glued to the body or next to us. When using Photon Platinum products it is as if we are permanently exposed to the sun at the time when solar radiation is most beneficial, thus receiving our body, which is constantly the most beneficial of the radiation that a human being can receive: infrared ray emitting between 4 And 14 microns. Photon Platinum thus contributes to the improvement of blood circulation, has an anti-inflammatory action and exerts a thermal regulating effect, causing the internal temperature of our body to keep to 37 degrees. More explicit scientific studies, the effects of photon fiber platinum are potentially beneficial for: blood circulation, blood pressure, oxygenation of muscles and brain, and also improving visual acuity.
 

Biography:

Dr Kourosh Amraei is an ophthalmologist at Lorestan University, Iran.

Abstract:

 

Self-handicapping represents a strategy whereby individuals actively arrange the causes of their behavior to preserve self-esteem within socially evaluative situations. Self-handicapping has two forms of behavioral self-handicapping and claim self-handicapping. Behavioral self-handicapping consists of performing or not performing a task in order to make excuses and to claim self-handicaps, a verbal effort to convince the others about the reasons behind the failure so, that the individual is not being questioned or blamed. In the present study, self-handicapping among students with visual and auditory impairment is compared. In this causal-comparative study, 46 blind students and 38 deaf students were selected through multi-cluster sampling. They were required to answer Jones and Rodvelt self-handicapping Questionnaire. The multi-variable variance analysis MANOVA had done about data. Research results demonstrate that the blinds and the deaf don not differ in adopting claimed self-handicapping mechanism. Comparing the blind students, the deaf students showed a greater use of behavioral self-handicapping mechanism and general self-handicapping, however. Regarding the results of this study (i.e. difference between the deaf and the blinds in adopting self-handicapping mechanism), contributes to instructional and rehabilitating programs in the two groups. 

  • Retina and Retinal Neurodegeneration | Neuro-Optometry | Optical Coherence Tomography

Session Introduction

Emmanuel Kobia-Acquah

Kwame Nkrumah University of Science and Technology, Ghana

Title: Optometry Services in The Ashanti Region Of Ghana
Biography:

Emmanuel Kobia-Acquah is an accomplished, Ghanaian trained Optometrist, Public Health for Eye Care Researcher, and currently Lecturer at the Kwame Nkrumah University of Science and Technology (KNUST). He graduated with a Doctor of Optometry degree in 2010 at KNUST. He had one-year comprehensive fellowship training in Clinical Optometry in 2012 at the L V Prasad Eye Institute in India and subsequently obtained an MSc in Public Health for Eye Care in 2015 from the London School of Hygiene and Tropical Medicine. He is currently undertaking a number of research work including: An image processing algorithm for prediction of glaucoma in Ghana, referral patterns of patients attending optometry clinics in Ashanti region, knowledge, attitudes, and practices on ocular health among street vendors in Kumasi. He is also involved in several community outreach programs in Ghana and is a Board Member of the Volunteer Optometric Services to Humanity (VOSH-Ghana).

Abstract:

Statement of the Problem: Optometrists predominantly provide refractive services however the scope of practice varies depending on the curriculum for training and legislation for practice. The marked shortage of ophthalmologists in Africa means that optometrists will be important in meeting other eye care needs of the continent by providing primary eye care and diagnostic services apart from refraction. Although optometrists in Ghana are trained to deliver a wide range of eye care services including treatment of some eye conditions, it is not clear whether they are able to effectively render these services. This study sought to assess optometric services in government, Christian Health Association of Ghana (CHAG), and Non-Governmental Organisation (NGO) hospitals/clinics in the Ashanti region.

 

Methodology: This was a cross-sectional study. 26 government CHAG and NGO facilities including one teaching hospital were included in the study. The principal investigator visited all the facilities and administered structured questionnaires to all available optometrists.

 

Findings: The average age of optometrists working in these facilities was 31.6±4.5. NGO facilities were better equipped than CHAG and government facilities. Refraction, spectacle dispensing, and treatment with therapeutic drugs were available in all the facilities. 28.1% optometrists provided low vision services, and only 3.1% provided contact lens service. There was no association between the optometrists’ years of practice and their level of confidence in performing the procedures except for skills in low vision assessment (χ2=18.41, p=0.05) and tonometry (χ2=19.99, p=0.01). Similarly, there was no association between facilities in which the optometrists’ practiced and their level of confidence in performing the procedures except for tonometry (χ2=22.05, p=0.04) and biometry (χ2=26.15, p=0.04).

 

Conclusion & Significance: Although NGO facilities were better equipped compared to CHAG and government facilities, there was no difference in the ability of optometrists to perform routine procedures within these facilities.

Biography:

 

Oumer Sada has expertise in assessing patient’s drug therapy need and optimizing patient outcome by providing clinical pharmacy service. He has also additional roles in the university teaching, advising and precepting students, conducting problem solving researches and providing community service focusing on providing drug information service in promoting rational drug use.

Abstract:

 

Background: Recently in the discipline of ophthalmology, there have been many developments and introduction of new ocular therapeutic agents. In order to improve drugs therapeutic efficacy, minimize adverse effects, and delay development of resistance drug utilization trends and patients need to be evaluated periodically.

Objective: To assess the prescribing, drug use and dispensing practice of ophthalmic drugs at Boru hospital.

 Methodology: Cross sectional study was conducted on patients attending outpatient department pharmacy of Boru Meda Hospital to collect their medicines. Prescriptions of 84 patients encountered were analysed using World Health Organization (WHO) prescribing indicators and additional indices.

Result: Analysis showed that the mean number of drug per prescription was 2.2 and 97.2% of prescribed drugs were from the national essential drug list. 89.5% of drugs were prescribed by their generic name. Majority of the prescribed drugs were antibiotics (62.7%) and only 17.7% of the prescriptions had frequency of dosing. Percentage of patients with good post- dispensing knowledge on the dispensed ophthalmic drugs was 37.1%. Dispensing and counselling time were 18sec and 1.30 minute respectively.

Conclusion: The study indicated an awareness of poly pharmacy but showed ample scope for improvement in encouraging the prescriber to write complete prescription and the dispenser to provide adequate counselling.

 

 

 

 

 

 

 

Biography:

Yuhe Li  received his Ph.D. degree in 2001 from Tsinghua University, now he is associated professor in Tsinghua University. His main research interests include micro and Nano measurement and machine vision.

                                                                                                 

Abstract:

Statement of the Problem: Surface topographic measurement plays an increasingly significant role in optical measurement, such as automatic visual inspection, ultra-precision manufacturing and other fields. The latest hard drives and optical instruments require the chips with ultra-fine surfaces, as well as the corresponding detecting technique to carry out online measurement and monitor the relevant parameters. The phase-shifting interferometry is one of the most widely applied technique of which the principle is introducing time modulation into the phase difference of two beams of coherent light. By the photoelectric detector the phase can be demodulated from the interference pattern via considerable phase-unwrapping algorithms. However, the inevitable noise leads to the error and distortion of several points in the phase diagram.

 

Methodology & Theoretical Orientation: We propose a K-means clustering unwrapping algorithm for the error reduction. Based on "bad points" to avoid the path integral, our algorithm can complete the three-dimensional morphology online. Compared with the traditional algorithms which might result in failure to unwrap when the reference points happen to be noise points, our algorithm is put forward to extract independent noise areas, such as faults, holes, etc. and can separate the effective phase information by using the clustering analysis. The detailed algorithm is as follows: (1) Giving pixel gray difference T of each cluster center, and then calculating the clustering parameter K based on the interference pattern; (2) Considering K and the gray values g of each pixel as variables and analyzing the pixel set G in clustering process; (3) Establish the original image index matrix, generating new clustering image by replacing the original pixel values with new clustering centroids and separating independent noise area according to the distance d and weight τ and (4) Completing the unwrapping calculation.

 

Conclusion & Significance: We build the surface topographic experiment system and the error has been successfully made less than 0.004 µm. Therefore, the K-means clustering unwrapping algorithm, of which the result is compared to that of the calibration equipment, has been valid. Consequently, the relevant online measurement can be more accurate.

Biography:

Joy Sheril R Penilla has completed her Doctor of Medicine in San Beda College of Medicine. She is an Ophthalmology Resident in the Department of Health-East Avenue Medical center, Quezon City, Philippines.

Abstract:

 

The objective of this paper is to present an unusual case of bilateral optic atrophy secondary to a dolichoectatic arterial compression of the prechiasmal optic nerve. Optic neuropathy is a frequent cause of vision loss. Internal carotid artery dolichoectasia is rare, and can compress on the optic nerve resulting to eventual loss of vision. This is an observational case report; seen in a national eye referral center of a developing country. The patient is a 50-year old female from Albay with a history of loss of vision on the left eye. Patient was evaluated to have bilateral optic neuropathy caused by compressive effect of a dolichoectatic internal carotid artery, as revealed by magnetic resonance imaging. Optic atrophy due to dolichoectatic anomaly is uncommon, but should be considered on a patient with unexplained progressive vision loss. Clinical suspicion of this disease entity is highly warranted after more common causes of optic nerve atrophy have been excluded. MRI with MRA confirms the diagnosis for possible neurosurgical intervention.

Biography:

Professor at Alexandria University, Egypt

Abstract:

Purpose: The aim of this study was to determine the normative data of macular thickness in the Egyptian population and to assess the effect of different demographic data and ocular parameters on it using spectral-domain optical coherence tomography (SD-OCT).

Patients & Methods: This cross-sectional study included 105 healthy Egyptian patients, who underwent a comprehensive ophthalmic examination, including Spectralis SD-OCT scanning, at Alexandria Main University Hospital. One eye from each patient was chosen randomly to be included in the study. Macular thickness was calculated based on center thickness and nine areas that corresponded to the Early Treatment Diabetes Retinopathy Study map using OCT mapping software. The relationships between macular thickness and sex, age, axial length (AL), spherical equivalent, keratometry readings, intraocular pressure, BMI, parity, and use of oral contraceptive pills were analyzed. 

Results: The study included 49 male and 56 female patients. The mean age of the patients was 40.41±14.17 years. The mean central subfield thickness was 262.70±19.64 μm. The mean macular thickness values in all areas of the Early Treatment Diabetes Retinopathy Study map were significantly greater in men than in women. As age increased, outer macular thickness decreased significantly in the overall group and in female, but not in male patients (partial correlation). The AL correlated negatively with inner and outer macular thickness (partial correlation). However, spherical equivalent had no significant influence on multiple linear regression analysis. Central subfield thickness did not correlate significantly with keratometry readings, intraocular pressure, BMI, parity, or use of oral contraceptive pill. 

Conclusion: The mean macular thickness values in the Egyptian population were found to be less than those seen in the Spectralis SD-OCT studies published previously on Caucasians, but more than those seen in Blacks. Sex had the most significant effect on macular thickness in all regions. Age and AL showed a significant negative correlation with outer macular thickness.