This document summarizes visual acuity testing and measurement. It discusses various tests used to measure visual acuity including Snellen charts, Landolt rings, Tumbling E charts, and picture charts. It explains how visual acuity is recorded and interpreted using Snellen fractions, decimals, and logarithm of the minimum angle of resolution. The document also discusses objective tests of visual acuity for infants and children such as preferential looking tests, optokinetic nystagmus tests, and grating acuity tests.
Contact lens for congenital aphakia and other eye conditions for infants and toddlers. The slide presentation encompasses indications for CL fitting in paediatric, contact lens options, fitting techniques, challenges and contact lens as myopia control.
Contact lens for congenital aphakia and other eye conditions for infants and toddlers. The slide presentation encompasses indications for CL fitting in paediatric, contact lens options, fitting techniques, challenges and contact lens as myopia control.
Presentation containing information about all types of absorptive lenses its manufacturing, uses, advantages and disadvantages and some information about lens coatings.
Magnifiers is a type of magnifying glass or lens.
It consists of high convex lens.
It is mounted on a frame with handle or without handle.
Magnifiers mostly used in low vision patients.
Magnifiers are of 5 types available;
1. Hand magnifiers
2. Spectacle magnifier
3. Stand magnifier
4. Telescopic magnifier
5. CCTV
These types of magnifiers details in this pdf.
THANK YOU..
Vision charts/Eye Charts/Acuity chartsAzizul Islam
Visual acuity charts is an eye sight test charts.It is a clinical examination charts used by orthoptists, optometrists and ophthalmologists to determine a patient’s visual acuity (Near & Distance).
A Snellen chart is an eye chart that can be used to measure visual acuity. Snellen charts are named after the Dutch ophthalmologist Herman Snellen.
Snellen chart used for visual testing. Uses, Vision testing.
Landolt C · Lea test · logMAR chart ...
Presentation containing information about all types of absorptive lenses its manufacturing, uses, advantages and disadvantages and some information about lens coatings.
Magnifiers is a type of magnifying glass or lens.
It consists of high convex lens.
It is mounted on a frame with handle or without handle.
Magnifiers mostly used in low vision patients.
Magnifiers are of 5 types available;
1. Hand magnifiers
2. Spectacle magnifier
3. Stand magnifier
4. Telescopic magnifier
5. CCTV
These types of magnifiers details in this pdf.
THANK YOU..
Vision charts/Eye Charts/Acuity chartsAzizul Islam
Visual acuity charts is an eye sight test charts.It is a clinical examination charts used by orthoptists, optometrists and ophthalmologists to determine a patient’s visual acuity (Near & Distance).
A Snellen chart is an eye chart that can be used to measure visual acuity. Snellen charts are named after the Dutch ophthalmologist Herman Snellen.
Snellen chart used for visual testing. Uses, Vision testing.
Landolt C · Lea test · logMAR chart ...
visual acuity testing in children is challenging
VEP, OKN,PLT etc
CARDIFF, BOEK CANDY, WORTH IVORY BAAL, STYCAR
HOTV , MINIACTURE TOY TEST
SHEREDN GARED
SNELLEN CHART
ETDRS CHART
LOGMAR CHART
these are charts used in ophthalmology in pediatric age group
cover test
uncover test
alternate cover
hirschburg corneal light reflex test
10 D verticle prism bar test
visual acuity is very important for us . its the spatial resolving capacity of the visual system . visual perception (sensation) from stimulation of the retina by light and its of four type .
1- light sense
2- form sense
3- sense of contrast
4- colour sense
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
Tom Selleck Health: A Comprehensive Look at the Iconic Actor’s Wellness Journeygreendigital
Tom Selleck, an enduring figure in Hollywood. has captivated audiences for decades with his rugged charm, iconic moustache. and memorable roles in television and film. From his breakout role as Thomas Magnum in Magnum P.I. to his current portrayal of Frank Reagan in Blue Bloods. Selleck's career has spanned over 50 years. But beyond his professional achievements. fans have often been curious about Tom Selleck Health. especially as he has aged in the public eye.
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Introduction
Many have been interested in Tom Selleck health. not only because of his enduring presence on screen but also because of the challenges. and lifestyle choices he has faced and made over the years. This article delves into the various aspects of Tom Selleck health. exploring his fitness regimen, diet, mental health. and the challenges he has encountered as he ages. We'll look at how he maintains his well-being. the health issues he has faced, and his approach to ageing .
Early Life and Career
Childhood and Athletic Beginnings
Tom Selleck was born on January 29, 1945, in Detroit, Michigan, and grew up in Sherman Oaks, California. From an early age, he was involved in sports, particularly basketball. which played a significant role in his physical development. His athletic pursuits continued into college. where he attended the University of Southern California (USC) on a basketball scholarship. This early involvement in sports laid a strong foundation for his physical health and disciplined lifestyle.
Transition to Acting
Selleck's transition from an athlete to an actor came with its physical demands. His first significant role in "Magnum P.I." required him to perform various stunts and maintain a fit appearance. This role, which he played from 1980 to 1988. necessitated a rigorous fitness routine to meet the show's demands. setting the stage for his long-term commitment to health and wellness.
Fitness Regimen
Workout Routine
Tom Selleck health and fitness regimen has evolved. adapting to his changing roles and age. During his "Magnum, P.I." days. Selleck's workouts were intense and focused on building and maintaining muscle mass. His routine included weightlifting, cardiovascular exercises. and specific training for the stunts he performed on the show.
Selleck adjusted his fitness routine as he aged to suit his body's needs. Today, his workouts focus on maintaining flexibility, strength, and cardiovascular health. He incorporates low-impact exercises such as swimming, walking, and light weightlifting. This balanced approach helps him stay fit without putting undue strain on his joints and muscles.
Importance of Flexibility and Mobility
In recent years, Selleck has emphasized the importance of flexibility and mobility in his fitness regimen. Understanding the natural decline in muscle mass and joint flexibility with age. he includes stretching and yoga in his routine. These practices help prevent injuries, improve posture, and maintain mobilit
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
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.
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!
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.
263778731218 Abortion Clinic /Pills In Harare ,sisternakatoto
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micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
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. *
*Visual Acuity is a measure of spatial resolution
of the eye, or in other words, an estimation of
its ability to discriminate between two nodal
points.
3. *
*A variety of different tests of visual performance
measure some aspect of the limits of the visual
system’s ability to discern detail or to recognize
detailed targets.
*Minimum Detectable Resolution
*Minimum Separable Resolution
*Recognition Resolution
-Landlot rings
-Letter Optotypes
-Tumbling E
4. *
*Refraction and prescribing Decisions
*Monitoring Ocular Health
*Visual Acuity for Normalcy
*VA Measurement applied to vision standards
5. *
*Snellen fraction
Visual acuity= (test distance)/(distance at which letters
. subtend 5min of arc)
*Decimal Notation
VA 20/20= 1.0
*Minimum Angle of Resolution
VA 20/20= 1min of arc
*Logarithm of the Minimum Angle of Resolution
VA 20/20= 1min of arc = log10(1.0)= 0.0
7. *
*Snellen Chart
*Bailey Lovie Design Principles
*Design features for VA charts
-Logarithmic Size Progression
-Letter Legibility
-Number of optotypes at each size level
10. *
*Snellen’s Test Types
*Landolt’s Test Types
*Tumbling E Chart
*Allen Picture Chart
*Sheridan Gardiner HOTV Chart
*Ivory Balls
*Hiding Heidi
*Ffooks’ Test
*Stycar Test
*Light House Cards
*Lea Symbols
11. *
*Visual acuity expresses the angular size of the
SMALLEST target that can just be resolved by
the patient
*Snellen fraction is the most common notation of
acuity
*Snellen fraction is an expression of angular size
of an optotype at the type
*Assume 5*5 grid for letters with detail
separation of 1/5 of letter size.
12.
13.
14. * Visual acuity = (test distance)/(distance at which
letters subtend 5min of arc)
*Place patient at 20ft or 6m from snellen chart( 6m
because at this distance it is assumed that the rays
are almost parallel and patient exert minimum
accommodation)
*The chart should be properly illuminated 9100 foot
candles)
*Instruct Patient to cover eye not press the eyes
*OD then OS
*Pinhole if <6/12
15. *Ask the patient to read with one eye from the top
letter while the contralateral eye is closed gently with
the patient palm or with the occluder in the trial
frame.
*Now patient is asked to read the snellen’s chart and
depending upon the smallest line which the patient can
read from distance of 6m his vision is recorded as 6/6.
6/9, 6/18, 6/24, 6/36, 6/60.
*But if patient is not able to see the top line from 6m he
is asked to come towards Snellen’s chart step by step
and vision recorded at 5,4,3,2,1 meter and noted as
5/60. 4/60, 3/60, 2/6-, 1/60 resp.
*If <1/60
*CF (include distance), CF3FT, CF 2FT, CF 1FT OR CF
close to face
*HM+ then PL and PR then NPL
16. *When the patient cannot distinguish hand
movements the examiner notes whether the
patient can perceive light (PL) or not. If he
perceive light it is noted as PL +ve otherwise as
PL-ve.
*Also examiner then throw the light from four
directions ( nasal, superior, temporal, inferior)
and record accordingly. If present patient
perceive light from all directions it is marled as
PR ( projection of rays) present or else mark as
absent or defective. The test is repeated for the
other eye in similar fashion.
17.
18.
19. *
*Letters not of equally legibility e.g. O and E
*Non-uniform progression of letter sizes
*Unequal number of letters on each line
*Irregular spacing between letters and lines
*Ability to recognize target ( letters) is influenced
by literacy and past experience
*Inaccurate results specially in those with low
vision
20. *
*Similar to Snellen’s except that instead of letters the
broken circles are used
*Each broken ring substends an angle of 5min at the
nodal point
*Ability to recognize target(letter) is influenced by
literacy and past experience and hence Landolt’s
rings were designed to eliminate these factors and
present a more objective test
*End point is detection of the orientation of break in
the circle
21.
22. *
*A test performed on a person who has diminished
visual acuity to distinguish a refractive error from
organic disease
*The patient looks through it with one eye at a
time, without correction.
*Light passes only through the centre of eye’s lens,
& errors of refraction have no effect while the
occluder is used.
*Pinhole blocks the peripheral rays, only letting
those rays which pass through the central portion
of the pupil.
*If the visual acuity is improved, the defect is
refractive, if not organic
23.
24. *
*The Tumbling E Test is similar to Snellen in that
it is performed at 20 feet(6m). The child must
tell the orientation of the legs of the letter ‘E’
(up, down ,left , right).
*Very useful for non-verbal children.
*Disadvantage- right-left disorientation is
common in this range
25.
26. *
*Four letters (H,O,T,V) are used in the chart.
*The test is performed at 10feet (3m), and is
administered similarly to the Snellen Acuity.
*It comes with a near card so patients can
match the letters at a distance by pointing to
the corresponding letter on the near card.
*Advantage: This test does not have a
directional component.
27.
28. *
*Grating Acuity Tests
Visually Evoked Potential
Prefential Looking Tests
Optokinetic Nystagmus
*Flash Card Tests
Letter Flash cards
*Picture or symbol charts
Letter charts for children
29. *
*With Visual Evoked Response (VER), a scalp
electrode is used to record electrical signals
from the visual cortex while the patient views
a grating or check board Stimulus.
*Objective technique available to assess visual
system beyond retinal ganglion.
*Flash VER determines the integrity of macula &
visual pathway function.
*Pattern VER depend on form sense & gives
rough estimate of the visual acuity.
30.
31. *
*PL is used to assess VA in infants & young children who are
unable to identify pictures or letters.
*Procedure
*The child is presented with two stimulus field.
*One with stripes and the other with a homogenous grey are of
the same average luminance as stripes randomly alternated.
*Typically, infants and children will look at the more
interesting stripes.
*A small peephole is centered between the two fields, for
observer.
*Observer judges the location of the strips based on the child’s
head & eye movements.
32. *If the child can see the stripes, he/she will
prefer to look them.
*If the child can’t see them, the child will not
show a preference.
*Visual acuity determined with this method.
*RECORDING
*New born – 6/240
*3 months- 6/60
*36 months- 6/6
33.
34. *
*OKN testing can be used to verify if the patient possess
a cortical visual response.
*The OKN drum contains black stripes that should be
oriented vertically in front of the patient. The drum is
spun slowly and the examiner observes the patient’s
eye movement as they follow the rotating drum. The
patient should exhibit a nystagmus movement because
their eyes should jump back to look at a new pattern,
as the one they originally followed rotates out of the
sight. The visual angle subtends by the smallest strip
width that still elicits eye movement is a measure of
visual acuity.
35.
36. *
*Contains line drawings of familiar objects
(birthday cake, hand, bird, house, rotary
telephone, jeep). The test distance is 20
feet(6m).
*Disadvantages- Pictures not constructed
accroding to snellens formula
*- Children may not be familiar to all the
images.
*-Minimum threshold acuity level on thte
picture chart is 6/9
37.
38. *
*It is based on preferential looking and Snellen
principle.
*The chart is placed at a distance of 1m from
the patient.
*It is usually used for the age group of 3-9
months.
*There are cards available of various thickness
of lines.
39. *At a time two cards are held in front of the
patient. The blank in front and the one with
lines i.e., held behind it.
*Then immediately the second card is flipped
out and we keep on changing the positions.
*The patient should appreciate the card with
lines.
*The test is done at same eye level and the eye
movement of patient is seen.
40.
41. *
*It is a detection acuity test.
*It is useful in infants & preschool children.
*In this test, the child is made to observe an
oscillating drum with black dots of varying
sizes.
*The smallest dot that evokes pendular eye
movements denotes the level of visual acuity.
42.
43. *
*The test is performed by placing two pictures
side by side. One picture has complete wheels
while the other picture has sections missing.
The child is asked to point to the car with
broken wheels. Pair of cars are kept is
progressively smaller sizes.
44.
45. *
*The principle of the target design is that of the
vanishing optotype.
*The targets are pictures drawn with a white
band border by 2 black bands, all on a neutral
grey background.
*The examiner simply observes the children
fixation.
46.
47. *
*If child able to pick up small sweets at 33cm,
visual acuity is at 6/24 or 20/80.
48. *
*Blink Response in response to sound.
*Menace reflex i.e.; closure of the eyes on the
approach of an object if vision is normal.
49. *
*Behaviour evidence of decreased vision in right
eye.
*A small toy is used to get the child’s attention
& the examiner covers the right eye to monitor
fixation of the left eye. The child fixates on
the toy without objecting.
*When the left eye is covered, the child objects
& tries to move the examiner’s hand.
*When the right eye is covered, the child does
not object & tracks the object.
50.
51. *
*Done with one eye fixating on an accommodative
target held at 40cm.
*‘C’ refers to the location of corneal light reflex
fixates the examiner light at monocular
conditions.
*Normally reflected light from cornea in near the
centre of cornea and it should be positioned
symmetrically in both eyes.
*If fixation target is viewed eccentrically, fixation is
termed uncentral.
52. *‘S’ refers to the steadiness of fixation at examiners
light and also as it slowly moved about.
*‘M’ refers to the ability of the patient to maintain
alignment first with one eye then the other as the
opposite eye is uncovered.
EVALUATION
*CSM-6/9-6/6
*CSNM- 6/36-6/60
*Unsteady central fixation <6/60