- Optometry originated around 2000 years ago with the Greeks, who studied light reflection and refraction but did not understand the full role of the eye's structures.
- By the 1300s, Europeans were making early spectacles, and discoveries over subsequent centuries led to the development of corrective lenses and understanding of eye anatomy and visual function.
- Optometry emerged as a distinct profession in the late 19th century alongside ophthalmology, as technological and medical advances allowed eye exams and prescriptions.
- Throughout the 20th century, the scope of optometry expanded to include diagnostic drug use, surgical lasers, and an increased health care role.
This presentation will help students to decide if optometry is good for them as a career or not. it throws light on the career path options we have after completing Optometry.
This presentation will help students to decide if optometry is good for them as a career or not. it throws light on the career path options we have after completing Optometry.
Ill-sustained accommodation
WHAT?
-AKA accommodative fatigue
-Amplitude of accommodation is initially normal, but deteriorates over time after prolong focusing at near task.
-Sub-classification of accommodative insufficiency.
-An early stage of accommodative insuffciency.
CLINICAL SIGNS:
-Hard on any clinical tests that require stimulation of accommodation (hard on minus lens) and deteriorates AA over time.
MANAGEMENT:
1. Correction
2. Added plus lenses
3. Visual therapy
DIRECT DOWNLOAD LINK ❤❤https://healthkura.com/vision-therapy/❤❤
Dear viewers Check Out my other piece of works at___ https://healthkura.com
Vision Training/ Vision Therapy (Active/ Passive Vision Therapy)/ Sports Vision/ Computer Vision Syndrome
Contents:
-Vision Training
Overview
Misconception
Tips for success
Office Vision Training
Home Vision Training
Conditions treated by vision training
Sports Vision Training
Computer Vision Syndrome
Controversy
Summary
Summary
• Vision training is active therapy as it requires conscious participation by the pt.
• The achievement of the final goal occurs slowly and progressively
• VT is not a substitute to lenses or surgical therapy, it is an additional treatment
• Variety of BSV related conditions can be treated with VT
• The underlying neuropsychophysiological mechanisms affected by VT are still
under intense investigation
• VT is the most controversial subject in eyecare profession
The history of contact lenses is intriguing, spanning decades and continents. You probably don't imagine yourself with a bowl of water on your head when you think about contact lenses. Strangely, it was exactly how the contacts had started.
Are you interested to learn more about contact lens history and how it evolved with time and cutting-edge technology then These slides cover the whole evolution process of contact lenses.
Ill-sustained accommodation
WHAT?
-AKA accommodative fatigue
-Amplitude of accommodation is initially normal, but deteriorates over time after prolong focusing at near task.
-Sub-classification of accommodative insufficiency.
-An early stage of accommodative insuffciency.
CLINICAL SIGNS:
-Hard on any clinical tests that require stimulation of accommodation (hard on minus lens) and deteriorates AA over time.
MANAGEMENT:
1. Correction
2. Added plus lenses
3. Visual therapy
DIRECT DOWNLOAD LINK ❤❤https://healthkura.com/vision-therapy/❤❤
Dear viewers Check Out my other piece of works at___ https://healthkura.com
Vision Training/ Vision Therapy (Active/ Passive Vision Therapy)/ Sports Vision/ Computer Vision Syndrome
Contents:
-Vision Training
Overview
Misconception
Tips for success
Office Vision Training
Home Vision Training
Conditions treated by vision training
Sports Vision Training
Computer Vision Syndrome
Controversy
Summary
Summary
• Vision training is active therapy as it requires conscious participation by the pt.
• The achievement of the final goal occurs slowly and progressively
• VT is not a substitute to lenses or surgical therapy, it is an additional treatment
• Variety of BSV related conditions can be treated with VT
• The underlying neuropsychophysiological mechanisms affected by VT are still
under intense investigation
• VT is the most controversial subject in eyecare profession
The history of contact lenses is intriguing, spanning decades and continents. You probably don't imagine yourself with a bowl of water on your head when you think about contact lenses. Strangely, it was exactly how the contacts had started.
Are you interested to learn more about contact lens history and how it evolved with time and cutting-edge technology then These slides cover the whole evolution process of contact lenses.
HISTORY AND EVOLUTION OF RGP CONTACT LENS: RGP lenses were introduced in the 1970s. These lens allowed better oxygen flow to cornea and offered superior optical quality, making them an attractive option for many wearers.
Eye surgeon, Dr. Andrew Lam's obvious love for his craft comes through in the 2013 book, "Saving Sight," and (together with other sources) served as inspiration for this infographic. Enjoy! As always, please consult with a doctor about any medical condition.
Best Ayurvedic medicine for Gas and IndigestionSwastikAyurveda
Here is the updated list of Top Best Ayurvedic medicine for Gas and Indigestion and those are Gas-O-Go Syp for Dyspepsia | Lavizyme Syrup for Acidity | Yumzyme Hepatoprotective Capsules etc
Muktapishti is a traditional Ayurvedic preparation made from Shoditha Mukta (Purified Pearl), is believed to help regulate thyroid function and reduce symptoms of hyperthyroidism due to its cooling and balancing properties. Clinical evidence on its efficacy remains limited, necessitating further research to validate its therapeutic benefits.
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
Basavarajeeyam is an important text for ayurvedic physician belonging to andhra pradehs. It is a popular compendium in various parts of our country as well as in andhra pradesh. The content of the text was presented in sanskrit and telugu language (Bilingual). One of the most famous book in ayurvedic pharmaceutics and therapeutics. This book contains 25 chapters called as prakaranas. Many rasaoushadis were explained, pioneer of dhatu druti, nadi pareeksha, mutra pareeksha etc. Belongs to the period of 15-16 century. New diseases like upadamsha, phiranga rogas are explained.
CDSCO and Phamacovigilance {Regulatory body in India}NEHA GUPTA
The Central Drugs Standard Control Organization (CDSCO) is India's national regulatory body for pharmaceuticals and medical devices. Operating under the Directorate General of Health Services, Ministry of Health & Family Welfare, Government of India, the CDSCO is responsible for approving new drugs, conducting clinical trials, setting standards for drugs, controlling the quality of imported drugs, and coordinating the activities of State Drug Control Organizations by providing expert advice.
Pharmacovigilance, on the other hand, is the science and activities related to the detection, assessment, understanding, and prevention of adverse effects or any other drug-related problems. The primary aim of pharmacovigilance is to ensure the safety and efficacy of medicines, thereby protecting public health.
In India, pharmacovigilance activities are monitored by the Pharmacovigilance Programme of India (PvPI), which works closely with CDSCO to collect, analyze, and act upon data regarding adverse drug reactions (ADRs). Together, they play a critical role in ensuring that the benefits of drugs outweigh their risks, maintaining high standards of patient safety, and promoting the rational use of medicines.
- Video recording of this lecture in English language: https://youtu.be/lK81BzxMqdo
- Video recording of this lecture in Arabic language: https://youtu.be/Ve4P0COk9OI
- Link to download the book free: https://nephrotube.blogspot.com/p/nephrotube-nephrology-books.html
- Link to NephroTube website: www.NephroTube.com
- Link to NephroTube social media accounts: https://nephrotube.blogspot.com/p/join-nephrotube-on-social-media.html
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
Local Advanced Lung Cancer: Artificial Intelligence, Synergetics, Complex Sys...Oleg Kshivets
Overall life span (LS) was 1671.7±1721.6 days and cumulative 5YS reached 62.4%, 10 years – 50.4%, 20 years – 44.6%. 94 LCP lived more than 5 years without cancer (LS=2958.6±1723.6 days), 22 – more than 10 years (LS=5571±1841.8 days). 67 LCP died because of LC (LS=471.9±344 days). AT significantly improved 5YS (68% vs. 53.7%) (P=0.028 by log-rank test). Cox modeling displayed that 5YS of LCP significantly depended on: N0-N12, T3-4, blood cell circuit, cell ratio factors (ratio between cancer cells-CC and blood cells subpopulations), LC cell dynamics, recalcification time, heparin tolerance, prothrombin index, protein, AT, procedure type (P=0.000-0.031). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and N0-12 (rank=1), thrombocytes/CC (rank=2), segmented neutrophils/CC (3), eosinophils/CC (4), erythrocytes/CC (5), healthy cells/CC (6), lymphocytes/CC (7), stick neutrophils/CC (8), leucocytes/CC (9), monocytes/CC (10). Correct prediction of 5YS was 100% by neural networks computing (error=0.000; area under ROC curve=1.0).
Adv. biopharm. APPLICATION OF PHARMACOKINETICS : TARGETED DRUG DELIVERY SYSTEMSAkankshaAshtankar
MIP 201T & MPH 202T
ADVANCED BIOPHARMACEUTICS & PHARMACOKINETICS : UNIT 5
APPLICATION OF PHARMACOKINETICS : TARGETED DRUG DELIVERY SYSTEMS By - AKANKSHA ASHTANKAR
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
3. Brief History of Optometry
• Origins of Optometry goes back a long way
• Developed into the highly technical field today
• Optometry as a discipline traces its roots back
roughly 2000 years, to the Greeks.
• Greeks worked out the laws of reflection in
mirrors but did not fully understand the
principles of refraction.
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Pakistan Institute of Ophthalmlogy
4. • Also knew of the crystalline lens but had no
knowledge of the retina
• Rays of light came from the eyes, a myth that
existed until Leonardo da Vinci’s investigation
• The physics of light rays led to establishing the
role of the retina
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Pakistan Institute of Ophthalmlogy
5. • By 1300, Europeans were making spectacles.
From this time and up to the beginning of the
16th century spectacles were primitive being
made of horn, bone, leather or metal in two
pieces and held together by a rivet
• These were eventually replaced by one-piece
mounts but the problem remained as to how to
keep the spectacles on the nose
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Pakistan Institute of Ophthalmlogy
6. • Around the turn of the 18th century, Benjamin
Franklin invented the bifocal lens, John Dalton
described colour blindness, and Thomas Young
successfully mapped the normal visual field of
humans.
• The mid-19th century saw the development of
sets of trial lenses to determine lens
prescriptions, followed closely by the invention of
the ophthalmoscope, which allowed optometrists
to view the interior of the eye.
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Pakistan Institute of Ophthalmlogy
7. • Cylindrical lenses began being used about the same time
that optometry as a term began being used, about 1865.
Optometrists eventually began experimenting with contact
lenses, and in 1888 the first successful use of corrective
vision contact lenses was documented
• The development of spectacles and optical lenses is only
one part of the history of optometry.
• 19th century saw significant discoveries led to the rapid
development of ophthalmic optics which inturn leads to
establishment of optometry as a profession in the late 19th
century and onwards.
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Pakistan Institute of Ophthalmlogy
8. • It was almost simultaneous that the professions
of optometry and ophthalmology came into
being, blending together the developments in
spectacles and the optics of lenses with visual
optics and the physiology of the eye.
• Throughout the 20th century the scope of
practice of optometry has developed with an
increasing emphasis on health care.
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Pakistan Institute of Ophthalmlogy
9. • In 2016, almost 5000 optometrists in general
practice were licensed with their regulatory
body, the Optometry Board of Australia. Of
these, approximately 2300 were registered to
prescribe some medicines for the treatment of
conditions of the eye.
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Pakistan Institute of Ophthalmlogy
10. 1263
Roger Bacon first mentions lenses as useful for those with
weakness of sight.
1286
Approximate date of invention of spectacles in northern
Italy by unknown artisan.
1604
Johannes Kepler describes the function of the retina and
demonstrates that concave lenses correct myopia and
convex lenses correct hyperopia.
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Pakistan Institute of Ophthalmlogy
11. 1783
John McAllister, Sr. opens first U.S. shop for optometric
services, Philadelphia. By 1816 John McAllister & Son was
making gold and silver spectacles in a family business that
survived until early 20th century.
1629
King Charles I grants a royal charter to the Worshipful
Company of Spectacle Makers, London.
1621 Willebrord Snell discovers the law of refraction.
1623
First book on optometric principles, The Use of Eyeglasses,
published in Spain by Daza de Valdes.
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Pakistan Institute of Ophthalmlogy
12. 1843
Invention of the trial lens case facilitated the
determination of a lens prescription independent of the
vending and dispensing of spectacles.
1801
Thomas Young discovers astigmatism and is first to map
the normal visual field. Cylindrical lenses were first
developed in 1821.
1784
Benjamin Franklin invents a split bifocal lens for
spectacles.
1798 John Dalton describes color blindness.
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Pakistan Institute of Ophthalmlogy
13. 1862
Hermann Snellen devises test types and eye chart used to
measure visual acuity.
1856
Handbook of Physiological Optics is written by Hermann
von Helmholtz, a monumental treatise in three volumes. It
was translated from German to English in 1924, edited by
James P.C. Southall.
1847
James Prentice, English optician, arrives in U.S. His son
Charles F. Prentice, will become the “father of American
optometry.”
1851
Hermann von Helmholtz invents the ophthalmoscope and
is first to see the interior of the living eye
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Pakistan Institute of Ophthalmlogy
14. 1873 Cuignet demonstrates principle of retinoscopy,
retinoscope introduced.
1872
Beginnings of Illinois College of Optometry, the oldest
continuous program, with origins in courses and schools
such as McFatrich, Needles, Chicago College, and Northern
Illinois College of Optometry. Monoyer proposes the term
diopter for lens power.
1864
F. C. Donders publishes Anomalies of Accommodation and
Refraction of the Eye and establishes norms and principles
of prescription. He was the first to have cylindrical lenses
put in the trial case.
1865
The word “optometry” used by Verschoor in Holland in a
dissertation on refraction.
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Pakistan Institute of Ophthalmlogy
15. 1895
Charles F. Prentice threatened with jail for charging a fee
for eye exam. In 1896 he issued a treatise on the reasons
why states should recognize the professional status of the
optometrist.
Optical Journal, first optometric journal published in the
U.S.
1888
First successful scleral contact lenses made to correct
vision.
1886
English translation of E. Landolt’s book, Refraction and
Accommodation of the Eye.
Charles Prentice develops and promotes prism diopter
measuring system.
1887
A. E. Ficke and F.A. Mueller independently experiment
with blown-glass contact lenses.
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Pakistan Institute of Ophthalmlogy
16. 1911
Andrew J. Cross publishes Dynamic Skiametry in Theory
and Practice, introducing the basic theory and method for
dynamic retinoscopy.
1910
First university courses in optometry, Columbia University
(1910-1954), a big step toward recognition of the
optometric profession.
1898
Formation of the American Association of Opticians.
Name changed in 1910 to the American Optical
Association, and in 1919 to American Optometric
Association(AOA).
1901
Passage of first state law recognizing and regulating the
practice of optometry -- Minnesota. (All states had
optometry laws by 1921)
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Pakistan Institute of Ophthalmlogy
17. 1922
American Academy of Optometry organized to encourage
investigative research.
First Conference on Optometric Education,
1919
International Board of Boards (IBB) established. Name
changed to International Association of Boards of Examiners
in Optometry (IAB) in 1954, and to the Association of
Regulatory Boards (ARBO) in 1999.
1914
Optometrists go on record favoring regulations against
drivers with defective vision and encouraging visual tests for
driver licensing.
1915
In the case of Martin v. Baldi the PA Supreme Court rules that
optometry is a calling separate from medicine and cannot be
regulated by the state board of medicine as a “minor branch” of
that profession. Albert Fitch had convinced Pennsylvania
optometrists to pursue legal action.
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Pakistan Institute of Ophthalmlogy
18. 1928
Charles Sheard introduce “case analysis” for refraction
Also graduates of optometry affiliated with a university
will be eligible for licensure.
1925
Beta Sigma Kappa founded as international optometric
fraternity.
1923
Pennsylvania College of Optometry awards the first Doctor
of Optometry (O.D.) degree.
1924
The District of Columbia enacts an optometry law,
completing a total U.S. coverage
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Pakistan Institute of Ophthalmlogy
19. 1941
New York optometrist L. Lester Beacher produces textbook
on contact lens technique.
1940
Association of Schools & Colleges of Optometry (ASCO)
created; Albert Fitch first President. Parent organization
was International Federation of Optometry Schools (1921-
1940).
1937
“Optometry on Trial”
The Story of Optometry was authored by Wilber Brucker
under AOA auspices in 1938.
1938
Plastic contact lenses introduced by Theo Obrig and John
Mullen.
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Pakistan Institute of Ophthalmlogy
20. 1952
Cross-linked hydrophilic polymer (HEMA) discovered by
Otto Wichterle who ushers in the era of the soft contact
lens.
1951
National Board of Examiners in Optometry (NBEO)
founded by IAB and ASCO, first National Board exam given
in 1952.
1947
Optometrists first commissioned in the U.S. Army. Many
years passed before optometrists reached a status
equivalent to the other major health professions.
1950
Formation of Association of Military Optometrists; first
President: Eugene Strawn. Organized as Armed Forces
Optometric Society (AFOS) in 1970.
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Pakistan Institute of Ophthalmlogy
21. 1969
National Optometric Association (NOA) founded by C.
Clayton Powell and John L.
1968
American Optometric Student Association (AOSA) formed.
Although discussed and a committee formed by. Myers
who became the AOSA’s first President.
1961
Pennsylvania optometrists introduce a bill to authorize the
use of ophthalmic diagnostic pharmaceutical agents, but it
is defeated.
1965
Medicare and Medicaid enacted by U.S. Congress,
discriminates against optometrists.
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Pakistan Institute of Ophthalmlogy
22. 1976
First TPA Law passed – West Virginia. This law permitted
the use of therapeutic drugs by optometrists.
1973
Bill introduced in North Carolina to authorize optometrists
to use and prescribe pharmaceutical agents for diagnostic
and therapeutic purposes.
1970
Formation of the Armed Forces Optometric Society
(AFOS); first president: LTC Frederick van Nus.
1971
U.S. Food & Drug Administration approves Bausch & Lomb
soft contact lens, consumer advertising begins 1974
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Pakistan Institute of Ophthalmlogy
23. 1977
U.S. Supreme Court reverses four decades of precedent
and holds that professionals may utilize truthful
advertising (Bates v. Arizona State Bar)
1978
Federal Trade Commission (FTC) issues rule (Eyeglasses I)
for goods and services by optometrists, ophthalmologists,
and opticians for spectacle prescriptions.
1990
Neuro Optometric Rehabilitation Association (NORA)
formed, William Padula first President.
1995
Active optometric involvement in national research
studies, CLEK (Collaborative Longitudinal Evaluation of
Keratoconus Study) and OHTS (Ocular Hypertension
Treatment Study).
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Pakistan Institute of Ophthalmlogy
24. 2010
National health care legislation enacted, designating
children’s vision as an essential benefit and preserving
state patient access to care laws.
2005
Optometry 2020 Summits (2005-06), a series of 3 national
meetings attended by representatives from over 20
optometric organizations.
1997
AOA’s Centennial Year Anniversary celebration.
1998
First state law specifically authorizing the use of lasers by
optometrists for certain treatment purposes enacted in
Oklahoma.
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