This ppt describe about the incidence, diagnosis and management of maculopathy in caaes of pathological myopia.
Data collected and created by Vivek Chaudhary
For queries : vivek977optom@gmail.com
This ppt describe about the incidence, diagnosis and management of maculopathy in caaes of pathological myopia.
Data collected and created by Vivek Chaudhary
For queries : vivek977optom@gmail.com
The tear film is a complex mixture of substances secreted from multiple sources on the ocular surface, including the lacrimal gland, the accessory lacrimal glands, the meibomian glands, and the goblet cells.
Vitreous hemorrhage is the extravasation, or leakage, of blood into the areas in and around the vitreous humor of the eye.[1] The vitreous humor is the clear gel that fills the space between the lens and the retina of the eye. A variety of conditions can result in blood leaking into the vitreous humor, which can cause impaired vision, floaters, and photopsia.
It's an indepth presentation by Dr. Shah-Noor Hassan.
The tear film is a complex mixture of substances secreted from multiple sources on the ocular surface, including the lacrimal gland, the accessory lacrimal glands, the meibomian glands, and the goblet cells.
Vitreous hemorrhage is the extravasation, or leakage, of blood into the areas in and around the vitreous humor of the eye.[1] The vitreous humor is the clear gel that fills the space between the lens and the retina of the eye. A variety of conditions can result in blood leaking into the vitreous humor, which can cause impaired vision, floaters, and photopsia.
It's an indepth presentation by Dr. Shah-Noor Hassan.
you will get knowledge about the ptosis, its different types, its examination, its measurement, its treatment in detail.
different eyelid muscles such as LPS, Orbicularis oculi and frontalis are also explained.
The lecture concern the eyelids and contain the following subjects and medical terms:
* Anatomy
* Congenital ptosis
* blepharophimosis
* *Epicanthus
* Ptosis syndrome
* amblyopia (Lazy eye)
* Strabismus and its types(Hypertropia, Hypotropia, Esotropia, Exotropia )
* The Fasanella-Servat procedure(video) for correcting upper ptosis
* levator resection(video) another procedure for correting ptosis
* Acquired ptosis and its ptosis
Ectropion
It is an outward turning of the eyelid margin . This more frequently affects the lower eyelid.Upper eyelid ectropion is uncommon.Classified in 5 types
1)Congenital 2) Involutional 3) Paralytic 4) Cicatricial 5) Mechanical
Involutional ectropion is more common.Congenital ectropion is very rare.
Symptoms Epiphora :- excessive tearing.Excessive dryness.
Foreign body sensation Irritation.Burning.Redness.Chronic conjunctivitis KeratinizationCorneal exposure
Grading
Lid margin is out rolled and depending on out rolling ectropion can be classified as under:
Grade I –only punctum is everted
Grade II –lid margin is everted and palpebral conjunctiva is visible
Grade III –fornix is also visible
Etiological factors
Horizontal lid laxity:-can be demonstrated by pulling the central part of the lid 8 mm or more from the globe, with a failure to snap back to its normal position on release without the patient first blinking.
Medial canthal tendon laxity
demonstrated by pulling the lower lid laterally and observing the position of the inferior punctum If the lid is normal the punctum should not be displaced more than 1–2 mm
Lateral canthal tendon laxity
characterized by a rounded appearance of the lateral canthus and the ability to pull the lower lid medially more than 2 mm.
>Normally, the displacement should only be 0-2 mm.
Treatment
1 medical therapy
2 surgical therapy
Embryoloical basis of RD, Factors that keep retina attached, Mechanism of Detachment, Causes of Exudative RD
Presented as DNB Resident at Sri Sankaradeva Nethralaya, Guwahati
Involutional Entropion-mechanism, evaluation and management (lower lid)Tanvi Gupta
References and pictures- Collins Manual of Systematic Eyelid Surgery, Collins Color Atlas, Kanski, DOS articles
Presented as DNB Resident at Sri Sankaradeva Nethralaya, Guwahati
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
Normal Labour/ Stages of Labour/ Mechanism of LabourWasim Ak
Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
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This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
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Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
1. SYMPOSIUM ON LID RETRACTION
Presenter- Dr. Tanvi Gupta
Moderator- Dr. Jayanta Kumar Das
2. Abnormally high/ low lid position in primary position of upper/ lower lid respectively that
exposes the superior/ inferior sclera
Upper lid retaction
Lower Lid Retraction
3. Etiopathology
In the Upper Lid, the mechanisms of retraction could be due to:
LEVATOR MUSCLE
Overactivity or contracture (Specially in thyroid ophthalmopathy)
Abberant or increased innervation
Decreased inhibition
MULLER’S MUSCLE
Sympathetic hyperactivity
In the Lower eyelid
Fibrosis of inferior rectus / inferior tarsal muscle -> retracting action to the lower lid via its
capsulopalpebral head.
In the cases of lower eyelid trauma and postsurgical trauma -> intralamellar scarring or anterior
lamellar shortening may vertically shorten the eyelid.
5. I. Inflammatory causes of lid retractions are:
Thyroid eye disease
Orbital Pseudotumour
Cicatricial conjunctival Disease
Thyroid eye diseases are most common cause of lid retraction seen in
clinical practice.
Upper lid
1. Levator muscle contraction – inflammation, fibrosis
2. Levator adhesions to the orbicularis and septum
3. Hyperactivity of the sympathetic nervous system (in hyperthyroidism)- activation of Muller's muscle,
inflammatory fibrosis of Muller’s
Lower eyelid
Fibrosis of the inferior rectus/ inferior tarsal muscle, exerting a retracting action to the lower lid
via its capsulopalpebral head, is the probable mechanism.
6. Common finding in thyroid-related eyelid retraction is lateral flare.
In this condition, the eyelid retraction is more severe laterally than medially, resulting
in an abnormal upper eyelid contour that appears to flare upward along the lateral half
of the eyelid margin.
7. II. Involutional/ Congenital/ Neurogenic
Congenital
typically result from neurological causes.
Primary congenital eyelid retraction is a diagnosis of exclusion.
Lid retraction may be due to a combination of both anterior and posterior lamellar
shortening that results from developmental abnormalities.
May involve the upper, lower, or both eyelids.
Congenital hyperthyroidism, aberrant innervation of the third cranial nerve, Marcus
Gunn (jaw-winking) syndrome, seventh cranial nerve palsy, and orbital tumor must be
ruled out.
8. Aberrant regeneration of Third Nerve
Acquired - Slow growing intra-cavernous aneurysm or meningioma can press upon the 3rd
nerve.
Congenital - Marcus gunn jaw winking phenomenon (commenest form of trigemino oculo
synkinesis)
Midbrain lesion (pretectal syndrome) –lid retraction mostly results from damage to
supranuclear posterior commissure.
Supranuclear lesion (disinhibition of levator muscle)
Nuclear lesion (+/- lid syndrome) - ipsilateral ptosis, contra lateral eyelid retraction
Sympathetic overactivity
Claude Bernard syndrome- cyclic spasm of pupil and lid retraction (associated with facial
hyperhidrosis and headache)
Anxious & psychotic pts
10. III. Mechanical
Prominent globes- high myopes, Buphthalmos, Proptosis, Craniostenosis,
Paget'disease
Cicatricial scarring of lid
Contact Lens wear / lost Contact Lens under eyelid
Neoplastic (eyelid tumour)
Infection- herpes zoster ophthalmicus (severe inflammation) & scleroderma
11. IV. Postoperative
Blepharoplasty overcorrection-lower lid
Overcorrection of Ptosis
Excessive Levator Resection
Eyelid tumour resection & reconstruction of lid
Orbital floor fracture repair -> external subciliary approach- lower lid
Orbicularis myectomy
Retinal detachment surgery with encircling buckles
Excessive vertical superior rectus surgery due to the anatomical connections between the
superior rectus and the levator muscle
Shortening of anterior lamella from excessive skin removal
13. V. Pharmacologic
Sympathetic agents – Phenylephrine, Apraclonidine, Corticosteroids
VI. Traumatic
Eyelid disruption of upper or lower lid with scarring
Lid laceration
Orbital floor fracture-
Inferior Rectus disinsertion
Traumatic lid disruption – lower lid
15. Christopher I. Zoumalan, MD; Richard D. Lisman, MD. Evaluation and Management of Unilateral Ptosis and Avoiding
Contralateral Ptosis. December 14, 2009.
16. Transient
Normal infants-80% of normal infants (eye popping reflex)
Preterm infants - due to immature myelinisation of extrageniculate visual pathway
Maternal hyperthyroidism
Dorsal mesencephalic lesions (Collier's Lid retraction sign)
Multiple sclerosis (third nerve fascicle involved)
Bilateral episodic lid retraction in petitmal /myoclonic seizures
Oculogyric crisis
17. Voluntary/ non organic finding
Myasthenia gravis
Post tetanic facilitation of levator muscles.
19. Ocular discomfort,
foreign body sensation,
photophobia,
epiphora,
other symptoms of exposure keratopathy- due to decreased excursion and lagophthalmos
Alteration in appearance and disfigurement.
In thyroid-related orbitopathy, upper eyelid retraction present in primary gaze is called
Dalrymple sign.
SYMPTOMS
20. Palpebral fissure and levator function - measured with a millimeter ruler.
Great care should be taken to maintain the ruler perpendicular to the line of gaze, to
ensure that the patient maintains exact primary gaze, and with the examiner sitting at eye
level relative to the patient.
Patients is instructed to relax their eyebrows and eyelids during clinical examination and
measurement procedures.
The amount of eyelid retraction is assessed quantitatively in each eye individually as
fixation is maintained.
Vertical phoria and tropia are coincidentally assessed.
EXAMINATION
23. The presence of proptosis, lid lag, lid edema or ophthalmoplegia with the retraction
should prompt evaluation for thyroid eye disease (TED)
Laboratory testing
Thyroid Profile
Thyroid Stimulating Hormone (TSH)
Free T3
Free T4
Some patients with thyroid ophthalmopathy have no serologic evidence for thyroid
disease
Thyroid autoantibodies may be useful in testing for euthyroid - Grave’s
ophthalmopathy, Hashimoto thyroiditis
anti-TPO antibodies,
anti thyroglobulin(TG) antibodies
Orbital ultrasound or orbital computed tomography may confirm thyroid eye disease.
24. Autoantibodies against various eye muscles membrane antigens are detected in
96% patients of lid retractions, but may be present in 20% of normal patients.
‘64-K Da’ membrane antigens is most specific for eyelid retraction
26. The treatment of lid retraction should be aimed at the underlying etiology.
27. Corneal exposure is the most serious complication of lid retraction.
Prior to correction of lid retraction surgically , the immediate treatment
goal is to protect the cornea.
1. Preservative-free tear supplements,
2. Lubricating ointment or gels
3. Punctal plugs
4. Moist chamber shields
5. Taping the eyelid during sleep
28. Temporarily treat eyelid retraction secondary to thyroid-related orbitopathy, because
of its effect on striated fibers in the levator muscle.
The effects of a single injection can last for 3 to 4 months.
Botulinum A toxin injection can be used to reduce the lid retraction in symptomatic
cases.
30. Retraction can be with-
Shortage of skin
Shortage of Conjunctiva
No shortage of skin or conjunctiva
1. Shortage of skin- Ectropion, retraction of lid-> Skin Graft, Z plasty
2. Cicatricial changes in Conjunctiva- mostly with entropion- lengthening of
posterior lamella
3. No shortage of skin or conjunctiva
Retraction due to shortened lid retractors
(i) Muller’s muscle excision (upto 2 mm)
(ii) Muller’s + Levator aponeurosis recession/ myotomy (upto 3 mm)
(iii) Muller’s + Levator aponeurosis + Spacers (4 mm or more)
31. As a general principle for Upper Lid retractions:
Up to 3 mm eyelid retraction -> a graded Muller's muscle resection.
For larger amounts of lid retraction (3 mm to 4 mm)
Complete extirpation of Muller's muscle
+
stripping or recession of the levator aponeurosis or marginal myotomy of the levator aponeurosis and
Mueller's muscle
+/-
adjustable sutures and interposition of spacers between distal end of levator and tarsus
For Lower Lid retractions
Though, no conclusive approach is present, the lower eyelid retractors may be approached through an
infraciliary incision or conjunctival approach.
Less than 2mm of retractions, -> recession of Lower Lid retractors
For larger retractions (>2mm) -> Lower Lid retractor lengthening
Retraction due to shortened lid retractors
32. This may be combined with implantation of spacers like
1. Ear cartilage graft
2. Tarsal conjunctival grafts
3. Hard palate grafts
4. Autologous and banked fascia lata
5. Donor sclera- Preserved sclera has been reported as a spacer in the recession of the
levator aponeurosis, with minimal complications.
6. Processed collagen
7. Gortex
8. AlloDerm grafts (alloplastic material)
between the tarsus and capsulopalpebral fascia with superior placement of the lateral
canthal tendon
The purpose of the anterior superior placement of the lateral canthal tendon is to
counteract the lower lid retraction and proptosis.
34. Dysthyroid lid retraction
Classically divided into five groups, each of which is performed through an external or conjunctival approach:
1. Excision of Muller's muscle
2. Levator aponeurosis weakening or recession
3. Excision of Muller's muscle combined with levator aponeurosis weakening or recession
4. Marginal myotomy of the levator aponeurosis
5. Use of spacers such as tarsus, sclera, hard palate, ear cartilage, or AlloDerm (LifeCell,
Branchburg, NJ), dermal fat graft, skin graft, SOOF (Subocularis ocular fat).
35. For retractions with other etiologies, the general surgical principles followed are:
In traumatic scarring -> excision of scar, and closure of healthy tissue
Tissue transfer - Z plasty or VY plasty
36.
37. In ant lamellar shortening- > release the scar and place full thickness skin graft
For facial nerve palsy - Mullers muscle excision and lateral tarsorrhaphy
In greater degree of Lid Retraction- lid loading with gold weight, palpebral spring,
temporalis muscle transfer, or levator recession.
A graded recession of Levator-Muller muscle complex, more temporal & central than nasal;
leaving the orbital septum intact, severing all the fibrotic bands between Muller’s muscle
and conjunctiva- gives satisfactory outcome.
38. REFERENCES
1. DELHI OPHTHALMOLOGICAL SOCIETY –LID RETRACTION-> Lohia DOMS , Sandhya
Makhija MNAMS, FRS, DO, P.A. Lamba MS
2. Collin’s Colour Atlas of Ophthalmic Plastic Surgery
3.THE GRADED LEVATOR HINGE PROCEDURE FOR THE CORRECTION OF UPPER EYELID
RETRACTION (AN AMERICAN OPHTHALMOLOGICAL SOCIETY THESIS). BY Daniel P.
Schaefer MD. Trans Am Ophthalmol Soc 2007;105:481-512
4. Zoumalan, MD; and Richard D. Lisman, MD. Evaluation and Management of Unilateral
Ptosis and Avoiding Contralateral Ptosis. Christopher I. The American Society for
Aesthetic Plastic Surgery
5. Google images
PROPTOSIS
These include inflammatory fibrosis of Müller’s muscle, abnormal sympathetic
tone in Müller’s muscle, proptosis, contracture of the inferior rectus muscle with superior rectus hyperactivity (fixation duress), and overmedication
with thyroid replacement
With inferior rectus restriction (thyroid, trauma), any effort to maintain vertical eye alignment results in overaction of the superior rectus muscle, and because the levator muscle is linked to the superior rectus muscle action, increased innervation of the levator muscle will also occur secondarily.
If upper eyelid retraction increases on attempted upgaze and resolves on downgaze, tight inferior rectus muscles are probably contributing to the upper eyelid retraction and should be surgically recessed first, before surgical correction of the eyelid retraction is entertained.
Unmasking Pseudoretraction- Hering’s test
Manual elevation of ptotic eye- > measurement of MRD
this permits the patient to continue fixation with the eye but removes the need for excessive innervation to both eyelids in an attempt to reduce the ptosis. As a result, the contralateral lid returns to its normal position after several seconds. Once the manually elevated lid is then released, the afferent input is once again increased to both eyelids and results in an increase in the lid position of the contralateral eye.
Lagophthalmos- inability to close eyelids completely
abnormally high upper eyelid in downgaze is called the von Graefe sign or lid lag