The document describes a case of Duane's syndrome in a 10-year-old male patient. Clinical findings showed limitation of adduction and globe retraction of the left eye, consistent with Duane's syndrome type 2. Refraction found low myopia and astigmatism, causing reduced vision. The patient was prescribed glasses and referred to a hospital for further evaluation and possible surgery due to a marked alternating head posture. Duane's syndrome is a congenital eye movement disorder caused by abnormal innervation of the eye muscles.
Active Vision Therapy in Management of Amblyopia (healthkura.com)Bikash Sapkota
DIRECT DOWNLOAD LINK ❤❤https://healthkura.com/lazy-eye-amblyopia/❤❤
In the request of my viewers, I have compiled my works here in a website. Visit this website (healthkura.com) to freely download this presentation along with other tons of presentations. Some useful links are given here.____Remember___healthkura.com
Active Vision Therapy in Management of Amblyopia
- Pleoptics
- Near activities
- Active stimulation therapy using CAM vision stimulator
- Syntonic phototherapy
- Role of perceptual learning
- Binocular stimulation
- Software-based active treatments
- Exposure to dark
- Pharmacological Therapy
It describes about the procedure of Hess charting. it serves as a great tool to understand the concepts involved. Suitable for optometry course. This is not a routine procedure but an important procedure which is used in diagnosis.
To know Humphrey visual field analyser
To know about various types of perimetry
To identify field defect
To recognize that field defect is due to glaucoma or neurological lesion
To know that field defect is progressive or not
Interpretation of HVFA
The presentation I have made and uploaded provides you with an in-depth insight into the patterns the strabismus may take following anomalies of extraocular muscles, deformities of the orbital structures,innnervational disturbances.
The author does not assume responsibility or legal liability for any errors in the text or for the misuse or misapplication of material in this work.
No copyright infringement, or plagiarism intended.
Amrit Pokharel
Active Vision Therapy in Management of Amblyopia (healthkura.com)Bikash Sapkota
DIRECT DOWNLOAD LINK ❤❤https://healthkura.com/lazy-eye-amblyopia/❤❤
In the request of my viewers, I have compiled my works here in a website. Visit this website (healthkura.com) to freely download this presentation along with other tons of presentations. Some useful links are given here.____Remember___healthkura.com
Active Vision Therapy in Management of Amblyopia
- Pleoptics
- Near activities
- Active stimulation therapy using CAM vision stimulator
- Syntonic phototherapy
- Role of perceptual learning
- Binocular stimulation
- Software-based active treatments
- Exposure to dark
- Pharmacological Therapy
It describes about the procedure of Hess charting. it serves as a great tool to understand the concepts involved. Suitable for optometry course. This is not a routine procedure but an important procedure which is used in diagnosis.
To know Humphrey visual field analyser
To know about various types of perimetry
To identify field defect
To recognize that field defect is due to glaucoma or neurological lesion
To know that field defect is progressive or not
Interpretation of HVFA
The presentation I have made and uploaded provides you with an in-depth insight into the patterns the strabismus may take following anomalies of extraocular muscles, deformities of the orbital structures,innnervational disturbances.
The author does not assume responsibility or legal liability for any errors in the text or for the misuse or misapplication of material in this work.
No copyright infringement, or plagiarism intended.
Amrit Pokharel
Duane syndrome, also called Duane retraction syndrome (DRS), is a congenital and non-progressive type of strabismus due to abnormal development of the 6th cranial nerve.
It is characterized by difficulty rotating one or both eyes outward (abduction) or inward (adduction).
On the other hands Duane Retraction Syndrome is a congenital strabismus syndrome occurring in isolated or syndromic forms. It presents with a variety of clinical features including diplopia, anisometropia, and amblyopia.
This is a slideshow presentation prepared by Dr Robin Goh Chon Han, an Ophthalmology postgraduate student from University Malaya, Malaysia. It covers a review of "Duane Retraction Syndrome" from introduction, etiology, pathophysiology, classification, clinical presentation, diagnosis, differential diagnosis, and management.
Highlighting the causes, symptoms, diagnosis of congenital and acquired, unilateral and bilateral SO palsy, muscle sequelae and complications. Includes simplified understanding of Park three step test.
Corneal topographer is a useful tool for our clinical investigations on patient's with corneal problem. Knowing about its principle, function and interpretation is important.
Cataract management in children from optometrist perspectiveAnis Suzanna Mohamad
Congenital and childhood cataracts are uncommon but regularly seen in the clinics of most paediatric ophthalmology teams in the UK. They are often associated with profound visual loss and a large proportion have a genetic aetiology, some with significant extra-ocular comorbidities. Optimal diagnosis and treatment typically require close collaboration within multidisciplinary teams. Surgery remains the mainstay of treatment. A variety of surgical techniques, timings of intervention and options for optical correction have been advocated making management seem complex for those seeing affected children infrequently.
National Ocular Biometry Course (NOBC) 2015 An echoslide presentation Anis Suzanna Mohamad
This powerpoint presentation is basically about ocular biometry. Echo presentation is one of the method to deliver infomation that obtain from the course we attend to other staff in our Ophthalmology Department.
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.
- 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
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
263778731218 Abortion Clinic /Pills In Harare ,sisternakatoto
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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!
Title: Sense of Smell
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 primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
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.
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
2. DUANE’S SYNDROME
aka Duane’s retraction syndrome
a congenital eye movement disorder due to misdirection
of the nerve fibre on eye muscle
causing some eye muscle to contract when they shouldn’t, vice
versa
can be unilateral or bilateral
3. Aetiology:
1.
Mechanical factors
fibrosed LR
abnormally insertion of MR
binding of MR sheath to wall
2.
Embryonic factors
Disturbance in normal embryonic development during 2nd
month of gestation
3.
4.
Development of 3rd, 4th, and 6th cranial nerve occur
Paradoxical innervation
Increase innervation to both MR & LR during ADD and
relaxation of both MR & LR during ABD
Trauma
4. Clinical features:
limitation of abduction with or without limitation of
adduction
attempt adduction: retraction of the globe with
narrowing of fissure
Protrusion & widening of the palpebral fissure on
abduction
May or may not have AHP
Strabismus
Amblyopia
5. PATIENT: MALE/10/MALAY
FILE NO: 0377
Date: 28th February 2012
CHIEF COMPLAINT
-complaint of blur when seeing distance, want to make spectacles
-has problem in writing ; words become shuffle since kindergarten
OCULAR HISTORY
-Father claimed has lazy eye since 2-3 years old, has follow up at Hosp.
Terengganu
-easily fall when young, suspect due to lazy eye
-wear spect at very young age but refused to wear till now
GENERAL
-Asthma, eczema, use homeopathy
FAMILY HISTORY
-Mother has DM, HPT since 8mo ago
6. RE
VA
*with marked
AHP
: face turn R
LE
6/12 PH: 6/9+
N5 @ 15cm
PRIMARY
GAZE
6/24
Not able to read Snellen on
primary gaze
AHP
D
N
moderate XP
PRIMARY
GAZE
COVER
TEST
6/24 PH: 6/18+2
N5 @ 15cm
D
N
large L XT
HIRSCHBERG
central
Reflex at nasal
AA
13,13,13
13,13,13
NPC
11cm LE deviates out
STREOPSIS
240 arc (TNO)
*not reliable
7.
8. 1.
LE Exotropia on primary gaze
2.
V pattern
LE has no problem when attempt on
abduction (towards temporal)
3.
Abduction on elevation: normal
Abduction on depression: normal
LE has limitation on adduction
(towards nasal)
4.
Down shooting of LE on adduction
Also limitation of adduction on elevation
& adduction on depression
LE presents narrow palpebral fissure,
and globe retraction on adduction
11. DIAGNOSIS
1. Low myope moderate astig
2. L Duane’s syndrome
MANAGEMENT
1. Prescribe Rx
2. Write referral letter to Hosp. Terengganu
3. Refer pt to BV clinic for further assessment - 9 Apr 2012
4. KIV AA with Rx
12. The major complaint that pt has is blur at distance
More specific- since when? is it sudden or gradually
blur?
Father claimed has lazy eye since young, should wear
glasses but refuse
could be related to chief complaint : blur- possible
uncorrected refractive error
The reason of failure wear glasses?
Ask more about symptoms of amblyopia. Any eye turning in?
Eye rubbing? See at very close distance?
13. DISCUSSION: CLINICAL FINDINGS
Reduction in vision BE
1.
Improvement with pinhole: reduction of vision can be
corrected with spectacles
However vision is taken with marked AHP
Visual acuity with head straight shows further decrement in
vision on LE
Marked AHP- face turn R
2.
Visual acuity is better on LE
however marked large exo-deviation on LE in primary
position
face turn R (non deviating side) is significant as to obtain
fusion.
14. AHP
• Left exotropia. As face turn to right (non affected side), it
will compensate the deviation.
• To improve visual acuity
• To decrease deviation, hence strengthen BSV. Cover test shows
moderate XP with AHP compared to primary gaze
PRIMARY GAZE
FACE TURN
RIGHT
FACE TURN RIGHT
15. Refractive error
4.
Unaided VA RE 6/24 is correlate with refraction finding
-0.50/-3.00DCx10 (estimated astigmatism ~±3.00DC).
Unaided VA LE 6/12 is correlate with refraction finding
-0.50/-1.75X170 (estimated astigmatism ~±1.25DC).
Most astigmatism power comes from corneal astigmatism.
BE develop meridional amblyopia (6/9 BE) due to
uncorrected astigmatism.
16. Diagnosis 1: low myope with moderate astig
1.
Uncorrected moderate amount of astig presenting with
reduce of vision
Should suggest meridional amblyopia?
Management: prescribe Rx to provide optimum correction
& prevent moderate amblyopia
Diagnosis 2: Left Duane’s syndrome
2.
Limitation of adduction on LE
On attempt of adduction, affected eye appear smaller
(palpebral fissure narrowing, globe retraction), and down
shoot. Classic sign on Duane’s Type 2.
There is 4 types of Duane’s syndrome
Management: refer to Hospital and BV clinic
17. Refer to BV: patient came on 2nd April 2012
Additional test- Hess chart: to investigate incomitant
strabismus in order to asses paretic element
LE
1. LE has smaller field than RE. Suggest LE affected eye.
2. Sloping sides to field indicates V pattern.
3. Compressed field of LE on nasal part.
• Underaction of Left MR, IO, SO
4. Larger field of RE
• Overaction of Right SR, LR, IR
RE
18. TYPE 1
TYPE 2
TYPE 3
TYPE 4
-Poor abduction,
good adduction
-Poor adduction,
good abduction
-Poor adduction,
poor abduction
-Paradoxical
abduction on
attempt adduction
-agenisis of 6th nerve
-3rd nerve split
innervate LR, MR
-adduction intact as
most nerve goes to
MR
-6th nerve intact
-3rd nerve split
innervate LR, MR
-Poor adduction as
LR contract against
MR
-6th nerve agenesis
-3rd nerve split
innervate LR, MR
-The split is equal
-Eye not moves
in/out
-6th nerve agenesis
-3rd nerve split
innervate LR, MR
-most innervate LR
-when ADD it ABD
19. TYPE 1
(70-80%)
ie: LE
LE
Esotropia
with head
straight
Face turn to
affected
side
TYPE 2
(~7%)
ie: LE
LE
Exotropia
with head
straight
TYPE 3
(~15%)
TYPE 4
ie: LE
Eyes are
aligned in
primary
position with
head straight
ie: LE
Large LE
Exotropia
Face turn to
nonaffected
side
Limited
abduction
left eye
Normal or
less
abduction
-Normal
or less
adduction
-Narrowing
of fissure
-Globe
retraction
-Limited
adduction
-Narrowing
of fissure
-Globe
retraction
-Marked upshoot and
sometimes downshoot
on adduction
Limited
abduction
left eye
-Limited adduction
-Narrowing of fissure
-Globe retraction
-Upshoot/ down shoot
Limited
adduction
RE
Simultaneous
abduction when
looking toward
uninvolved side
-violating Hering’s law
20. Management of Duane’s syndrome
Correct refractive error
Treat amblyopia
In this case, no patching treatment is indicated yet as vision BE is
almost similar
Meridional amblyopia usually has good prognosis with spectacles
alone
To monitor vision after correction after 3 months.
Surgery indicated if:
Marked AHP
Decompensating
Cosmetically poor deviation
Diplopia occurring more frequently
21. Refer to ophthalmology
To perform additional test for further evaluation
Forced duction test: to evaluate muscle palsy (+ve forced
duction test)
Suggestion for squint surgery
The marked AHP is consistent
To improve cosmesis & comfort to patient
22. Duane’s syndrome is a congenital eye movement disorder in
which there is miswiring of the eye muscles that typically
can be recognized through a few ocular signs and
symptoms.
As an optometrist, we should smartly recognized this
syndrome according to the history taking and clinical
findings in order to make an accurate diagnosis.
Although the syndrome is permanent, further managements
is crucial in order to solve patient’s problems such as marked
AHP and also on.
23. 1. Fiona J. Rowe. Clinical orthoptics. 3rd edition.
2.
3.
4.
5.
Wiley-blackwell.
http://emedicine.medscape.com/article/119855
9-overview date: 20th April 2012
http://telemedicine.orbis.org/bins/volume_page.
asp?cid=1-3-5-50
date: 20th April 2012
http://www.webmd.com/eye-health/duanesyndrome
date: 20th April 2012
http://childrenshospital.org/az/Site3103/mainpa
geS3103P0.html
date: 20th April 2012
Duane syndrome: A congenital eye movement disorder in which there is miswiring of the eye muscles, causing some eye muscles to contract when they should not and other eye muscles not to contract when they should. People with the syndrome have a limited (and sometimes no) ability to move the eye outward toward the ear (to abduct the eye) and, in most cases, a limited ability to move the eye inward toward the nose (to adduct the eye). Often, when the eye moves toward the nose, the eyeball also pulls into the socket (retracts), the eye opening narrows and, in some cases, the eye moves upward or downward. Many patients with Duane syndrome turn their face to maintain binocular vision and compensate for improper turning of the eyes.
Bluring of vision at distance suggest uncorrected refractive errorHas significant ocular history regarding Should ask more the condition of blur vision. -Is it gradually decrease/ becoming worse or persistent blur vision?-
Reduction in vision BE-Improvement with pinhole: part of reduction of vision can be corrected with spectacles-However vision is taken with marked AHP-Visual acuity with head straight shows further decrement in vision on LE2. Marked AHP- face turn R -vision is better on LE -however marked large exo-deviation on LE. AHP: face turn R (non deviating side) is significant as to obtain fusion. Large L XT is correlate with corneal reflex displaced nasally and AHP: face turn to right.
MRunderaction -4SO overaction +2
2. Marked AHP- face turn R -vision is better on LE -however marked large exo-deviation on LE. AHP: face turn R (non deviating side) is significant as to obtain fusion.