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.
Non - surgical treatment of squint i.e. all types of squint have some modalities of treatment [ optical treatment, orthoptic treatment, Prismo-therapy, and pharmacological treatment] except surgical treatment.
1. OPTICAL TREATMENT -
in optical treatment, it should be include correction of refractive error and prismotherapy.
SPECTACLES should be prescribed in every cases.
It may correct to squint partially or completely.
IN PRISMOTHERAPY, for correction of squint, This is light weight, and easy to apply on the back surface of glass.
It is useful in heterophoria, nystagmus, convergence insufficiency, managing diplopia and maintain binocular single vision.
IN PHARMACOLOGICAL TREATMENT, miotics, atropine and botulinum toxin are prescribed in some types of cases of strabismus.
IN ORTHOPTIC TREATMENT, means straight eyes.
It is used as a diagnostic purpose and therapeutic purposes.
- to increase fusion amplitude.
- anti suppression exercises.
- treatment of amblyopia.
- treatment of abnormal retinal correspondance.
- to control deviations.
ORDER OF ORHOPTIC TREATMENT -
. amblyopia is treated firstly.
. anti- suppression therapy.
- diplopia training.
- amplitude improvement.
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.
Non - surgical treatment of squint i.e. all types of squint have some modalities of treatment [ optical treatment, orthoptic treatment, Prismo-therapy, and pharmacological treatment] except surgical treatment.
1. OPTICAL TREATMENT -
in optical treatment, it should be include correction of refractive error and prismotherapy.
SPECTACLES should be prescribed in every cases.
It may correct to squint partially or completely.
IN PRISMOTHERAPY, for correction of squint, This is light weight, and easy to apply on the back surface of glass.
It is useful in heterophoria, nystagmus, convergence insufficiency, managing diplopia and maintain binocular single vision.
IN PHARMACOLOGICAL TREATMENT, miotics, atropine and botulinum toxin are prescribed in some types of cases of strabismus.
IN ORTHOPTIC TREATMENT, means straight eyes.
It is used as a diagnostic purpose and therapeutic purposes.
- to increase fusion amplitude.
- anti suppression exercises.
- treatment of amblyopia.
- treatment of abnormal retinal correspondance.
- to control deviations.
ORDER OF ORHOPTIC TREATMENT -
. amblyopia is treated firstly.
. anti- suppression therapy.
- diplopia training.
- amplitude improvement.
Convergence insufficiency is one of the most frequently encountered binocular vision problem in children and adults. It is often associated with a variety of symptoms, including eyestrain, headaches, blurred vision, diplopia [double vision], sleepiness, difficulty concentrating, movement of print while reading, and loss of comprehension after short periods of reading or performing close activities. Have your doctor diagnose and treat this significant visual problem.
A detailed presentation covering all aspects of amblyopia, a form of cortical visual impairment, defined clinically as a unilateral or bilateral decrease of visual acuity (VA) that cannot be attributed to structural abnormalities of the eye or visual pathway
Correction of Ametropia is very basic topic in Optometry background. Hope the SlideShare may help you. This PPT will help Bachelor students (B.optoms).
Management of visual problems of Aging by Ashith Tripathi Ashith Tripathi
This presentation contains headings - Visual performance in the ageing eye
Routine optometric and ocular examination of an older adult:
History
Ocular health examination
Visual acuity measurement
Refraction
Binocular vision
Visual field measurement
Colour vision
Management of vision problems in older adults
Frame requirement
Lens requirements
And special instructions etc.
Convergence insufficiency is one of the most frequently encountered binocular vision problem in children and adults. It is often associated with a variety of symptoms, including eyestrain, headaches, blurred vision, diplopia [double vision], sleepiness, difficulty concentrating, movement of print while reading, and loss of comprehension after short periods of reading or performing close activities. Have your doctor diagnose and treat this significant visual problem.
A detailed presentation covering all aspects of amblyopia, a form of cortical visual impairment, defined clinically as a unilateral or bilateral decrease of visual acuity (VA) that cannot be attributed to structural abnormalities of the eye or visual pathway
Correction of Ametropia is very basic topic in Optometry background. Hope the SlideShare may help you. This PPT will help Bachelor students (B.optoms).
Management of visual problems of Aging by Ashith Tripathi Ashith Tripathi
This presentation contains headings - Visual performance in the ageing eye
Routine optometric and ocular examination of an older adult:
History
Ocular health examination
Visual acuity measurement
Refraction
Binocular vision
Visual field measurement
Colour vision
Management of vision problems in older adults
Frame requirement
Lens requirements
And special instructions etc.
AMBLYOPIA
Presenter : Dr Nikhil Agrawal (1st year resident)
Moderator : Dr Ekta Gupta
DHIR HOSPITAL POST GRADUATE INSTITUTE OF OPHTHALMOLOGY
BHIWANI-127021
Email: education@dhirhospital.com
Glaucoma is not a single disease process but a group of disorders characterized by a progressive optic neuropathy resulting in a irreversible visual field defects that are associated frequently raised intraocular pressure (IOP).
IOP is the most common risk factor but not the only risk factor for development of glaucoma.
Uveal tissue is the middle vascular coat of the eyeball.
From anterior to posterior, it can be divided into 3 parts –
IRIS, CILIARY BODY CHOROID.
Iris is the anterior most part of the uveal tract.
The iris consists of four layers,
Anterior limiting layer
Iris stroma
Anterior epithelial layer
Posterior epithelial layer
The colour of iris depends on Anterior limiting layer.
The eyelids are mobile tissue curtains placed in front of the eyeballs. These act as shutters protecting the eyes from injuries and excessive light. These also perform an important function of spreading the tear film over the cornea and conjunctiva and also help in drainage of tears by lacrimal pump system.
The orbits are conical or four-sided pyramidal cavities, which open into the midline of the face and point back into the head. Each consists of a base, an apex and four walls.[4]
Each orbit is formed by seven bones –
Frontal bone
Ethmoidal bone
Lacrimal bone
Palatine bone
Maxilla bone
Zygomatic bone
Sphenoid bone
This pdf describes the details of some pathological conditions with their treatment.
some conditions
Albinism,
Aniridia
Coloboma
Corneal dystrophies
Cataract
Dislocated lens
Diabetic retinopathy
Keratoconus
Macular hole
Glaucoma
Myopic degeneration
Nystagmus
Optic trophy
Retnial detachment
Retinopathy of prematurity
Retinitis pigmentosa
Stargardt's disease
About disease of Conjunctiva
1. inflammatory conditions of conjunctiva
2.Symptomatic conditions of conjunctiva
3. degenerative conditions of conjunctiva
4. tumors of conjunctiva
5. cyst of conjunctiva
Amsler grid, to check central visual field about with in 20 degree.
It is diagnostic tool, to use detection of macular diseases, optic nerve and visual pathway.
Management of visual problems with agingMeghna Verma
Aging bring a continuous changes in visual system.
The visual system is also affected by age related ocular pathological conditions.
In it, routine ocular examination is compulsory.
Telescope have a small device but an important place in low vision.
Telescope eyelenses magnify the apparent size of distant objects.
Binoculars placed into eyeglass frame is called telescopic spectacle or spectacle mounted telescope.
TYPES
1. handheld monocular telescope
2. clip on spectacle mounted telescope
3. bioptic telescope
Telescope are of two types of designs-
1. galilean telescope
2. keplerian telescope
These are various structures in an eye , which are changing with age.
# ocular adnexa/ eyelids
# eyelashes / eyelid margin
# tear film
# cornea
# conjunctiva
# anterior chamber
# ciliary body
# pupil /iris
# crystalline lens
# vitreous
# choroid
# retina
Low vision patient have serious visual problems that have caused serious visual loss.
1. Contrast sensitivity testing and visual field testing
2. subjective testing of patients with media loss
# potential acuity meter
# interferometry
# photostress recovery test
# glare test
# color vision test
# dark adaptometry
3. objective testing of retinal loss
# USG
ERG/EOG
It is not a refractive error but a physiological insufficiency of accommodation.
It leads to progressive fall in near vision.
Decrease in the accommodative power of crystalline lens due to increasing age related conditions , leads to presbyopia.
1. decrease in the elasticity and plasticity of crystalline lens.
2. decease in the power of ciliary muscles.
Some conditions to generate premature presbyopia -
1 uncorrected hypermetropia
2. premature sclerosis of crystalline lens
3. weakness of ciliary muscles.
4. chronic simple glaucoma
SOME SYMPTOMS -
fever, blurring, asthenopic symptoms, fatigue, illness, diplopia
TREATMENT -
bifocal lens, trifocal lens and progressive addition lens
convex lens should be prescribed to correct presbyopia.
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..
SOFT CONTACT LENS FITTING
1. Alternative names of soft contact lens.
2. Need to know fitting requirement and performance requirements.
3. Centration and decentration of soft contact lens. -- There are cartesian system and binasal system.
4. what governs fitting of lens.
5. There are need to know about physical properties of soft contact lens.
6. Now, what is sag and sagital depth.
7. Finally, SAME SAG AND SAME DIAMETER but DIFFERENT DESIGN AND DIFFERENT BEHAVIOUR.
8. Parameters of soft contact lens -
total diameter
back optic zone radius
centre thickness
front optic zone radius
water content
9. There are two types of prescribing methods -
empirical prescribing
trial fit prescribing
10. Effect of a blink with soft contact lens - too flat and too steep.
11. Requirements of lens movement.
12. Lens lag position - primary gaze, up gaze and lateral gaze position.
13. Compulsory of lower lid push up test.
14. Ranges of fitting of soft contact lens - either too fit or too loose or ideal fitting.
15. All step of soft contact lens fitting is done.
Astigmatism
Definition - It is a type of refractive error where in the refraction varies in the different meridian.
The rays of light entering the eye can not converge to a point focus but form a focal lne.
Types of astigmatism -
1. Regular astigmatism 2. Irregular astigmatism
Etiology of regular astigmatism -
1. corneal astigmatism 2. lenticular astigmatism 3. retinal astigmatism
Types of regular astigmatism -
1. depending upon axis and angle b/w two principal meridian-
-with the rule astigmatism
- against the rule astigmatism
- oblique astigmatism
- bi oblique astigmatism
2. depending upon their position of two focal lines-
- simple astigmatism
- compound astigmatism
- mixed astigmatism
Optics of regular astigmatism
Treatment of regular astigmatism
Irregular astigmatism
Etiological types
Symptoms of astigmatism
Treatment
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
for beginners, providing thorough training in areas such as SEO, digital communication marketing, and PPC training in Noida. After finishing the program, students receive the certifications recognised by top different universitie, setting a strong foundation for a successful career in digital marketing.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
2. ▪ DEFINITION
▪ CLASSIFICATION
▪ TYPES OF AMBLYOPIA
▪ PATHOPHYSIOLOGY OF AMBLYOPIA
▪ CLINICAL CHARACTERISTICS / CLINICAL FEATURES
▪ VISUAL ACUITY IN AMBLYOPIC EYE
▪ MANAGEMENTOF AMBLYOPIA
3. ▪ It refers to partial loss of sight (vision) in one or both eyes, in the
absence of any organic disease of ocular media, retina and visual
pathway.
▪ It is caused by abnormal visual development secondary to abnormal
visual stimulation in the absence of ophthalmoscpic or other marked
objective signs.
▪ Literally, speaking, amblyopia is a spectrum of visual loss, range from
missing a few letters on 6/6 line to the hand motion vision.
4. 1.) ORGANIC AMBLYOPIA VERSUS FUNCTIONAL AMBLYOPIA –
ORGANIC AMBLYOPIA –
▪ It is irreversible condition.
▪ It refers to a partial visual loss caused by undetectable organic
lesions in the eye or in the visual pathway.
▪ E.g. – toxic amblyopia.
FUNCTIONAL AMBLYOPIA –
▪ It refers to obligatory psychical suppression of the retinal images.
▪ It is a reversible condition.
▪ Depending on the cause, may be anisometropic, strabismus,
meridional or stimulus deprivation.
5. 2.)AMBLYOPIA OF ARREST VERSUS AMBLYOPIA OF EXTINCTION –
AMBLYOPIA OF ARREST –
▪ Amblyopia caused by a stage of visual development early in life.
▪ It is not known that a 6/6 visual acuity in an infant is reached in 6 months of
age, amblyopia of arrest would be caused by an interference with the
fixation reflex that begins before 6 months of age . E.g. During critical
period of development.
AMBLYOPIA OF EXTINCTION –
▪ Amblyopia resulting from the suppression of an already existing visual
acuity.
▪ This is usually possible in children up to 6 years of age.
▪ In other words, it can be concluded that any strabismus or visual
deprivation b/w 6 months of age & 6 years, would result in amblyopia of
extinction or so called suppression amblyopia.
6. 3.) CONGENITAL VERSUS ACQUIRED AMBLYOPIA -
CONGENITAL AMBLYOPIA –
▪ These term had been used in the literature for the patient’s
having low vision, nystagmus and poor colour vision.
▪ It is also used for patients having reduced visual acuity in
whom no obvious cause, such as strabismus and ametropia, is
present.
▪ These patients do not respond to treatment.E.g. Organic
amblyopia.
ACQUIRED AMBLYOPIA –
▪ It is a non informative term which encompasses all other
cases with amblyopia such as strabismus, anisometropia and
disuse. Etc.
7. There are many types of amblyopia –
▪ Strabismic amblyopia
▪ Stimulus deprivation amblyopia
▪ Anisometropic amblyopia
▪ Meridional amblyopia
▪ Isoametropic amblyopia
▪ Idiopathic amblyopia
▪ Amblyopia secondary to nystagmus
8. 1.) STRABISMIC AMBLYOPIA –
▪ The term Strabismic amblyopia is used for the amblyopia seen
in those children patients with unilateral constant squint who
strongly favour one eye for fixation.
▪ Strabismic amblyopia is a common form of amblyopia.
▪ Strabismic amblyopia is seen far more often in esotropia than
the exotropes.
▪ Strabismic amblyopia occurs very rarely in patients with
hypertropia.
▪ Patients with alternative Strabismus ( squint) do not have
amblyopia but they have abnormal binocular functions.
9. 2.) STIMULUS DEPRIVATION AMBLYOPIA / AMBLYOPIA OF
DISUSE / AMBLYOPIA EX ANOPSIA –
▪ This term has been discarded in relation to Strabismus.
▪ It should be reserved for those conditions only where in one eye is
totally excluded from seeing early in life.
▪ Such conditions include – monocular congenital or traumatic
cataract,compete ptosis, corneal opacity and prolonged patching of
the normal eye for the treatment of amblyopia.
▪ It is least common but most damaging and difficult to treat form of
amblyopia.
▪ NOTE – Bilateral deprivational amblyopia may develop in small
children with bilateral media opacities, such as – Bilateral congenital
cataract,Bilateral corneal opacity and Bilateral vitreous
haemorrhage.
10. 3.) ANISOMETROPIC AMBLYOPIA –
▪ It refers to the amblyopia occuring in an eye having
higher degree of the refractive error than the fellow (
other ) eye.
▪ This type of amblyopia is more common.
▪ It is of a higher degree in patients with
anisohypermetropia than those in anisomyopia.
▪ Even 1-2D. Hyperopic anisometropia may cause
amblyopia while up to 3 D myopic anisometropia usually
does not cause amblyopia.
11.
12.
13. It can be discussed Under following headings-
1.) Amblyogenic factors
2.) Role of retina in the development of amblyopia
3.) Active cortical inhibition
14. 1.) AMBLYOGENIC FACTORS-
These are as follows –
A.) Deprivation of form vision
B.) Light deprivation
C.) Abnormal binocular interaction
15. A.) DEPRIVATION OF FORMVISION—
a.) Monocular deprivation of form vision –
▪ It occurs the critical period of visual development results in
amblyopia in the deprived eye.
▪ Monocular visual deprivation works as an amblyogenic factor in
strabismic, Anisometropic,and stimulus deprivation amblyopia.
b.) Binocular deprivation of form vision –
▪ It occurs the critical period of visual development results in bilateral
deprivational amblyopia.
▪ It plays the role of amblyogenic factors in children with bilateral
cataract,ametropia and bilateral high refractive errors.
16. B.) LIGHT DEPRIVATION –
▪ Light deprivation works as an amblyogenic factor in children with
unilateral as well as Bilateral complete cataract.
C.) ABNORMAL BINOCULAR INTERACTION –
▪ Abnormal binocular interaction is highly amblyogenic.
▪ It plays the role of amblyogenic factor in children with strabismic,
anisometropic and unilateral stimulus deprivation amblyopia.
17. 2.) ROLE OF RETINA IN THE DEVELOPMENT OF AMBLYOPIA
–
▪ There is some evidence that the retina itself is abnormal in
amblyopia.
▪ Retinal abnormality is the effect of cause of amblyopia is
debatable.
▪ Retinal threshold and sensitivity have been affected in amblyopia.
▪ It is, however, widely believed and proved experimentally that
there is a decreased sensitivity of foveal cones in amblyopia.
▪ Decreased rod and cones in the affected eye cause certain
neurophysiological changes, transmitted aberrantly to the CNS
which triggers the onset of amblyopia.
18. 3.) ACTIVE CORTICAL INHIBITION –
▪ Active cortical inhibition are the two fundamental
mechanisms for development of amblyopia.
A.) PHYSIOLOGIC EVIDENCE
B.) PHARMACOLOGIC EVIDENCE
19. ▪ Decreased in Binocular visual acuity – binocular visual acuity
20/40 or worse in amblyopia eye or worse with atleast 3
logMAR line difference.
▪ Crowding phenomenon – (separation difficulty) refers to the
inability of an amblyopic eye to distinguish letters crowded
together.
▪ Neural density filter effect – with reduced illumination, acuity
of an amblyopic eye declines less sharply than that of a normal
eye. This means that amblyopic eye can act under mesopic
condition.
20. CLINICAL FEATURES -
▪ Fixation patterns – central, eccentric, or no fixation.
▪ Contrast sentivity – reduced.
▪ Accommodation – defective.
▪ Visual field - largest acuity losses in esotropia & amblyopia occur in
the temporal field.
▪ Colour vision – impaired only if visual acuity is below 6/36.
▪ Pupillary light reflex – generally normal.
▪ ERG & EOG – ERG is normal but EOG shows unsteadiness of fixation.
21. 1.) PREVERBAL CHILDREN –
▪ CSM METHOD –
▪ C- location of corneal light rerlex under monocular condition.
▪ S – Steadiness of fixation on target.
▪ M – Maintenance of fixation.
▪ Preverbal/ nonverbal patients with strong fixation in one eye should be suspected
of having an amblyopia in other eye.
22. 2.) VERBAL CHILDREN –
PRE- LITERATE CHILDREN-
▪ HOTV,Illetrate E charts,lea symbols, Allen picture cards.
LITERATE CHILDREN-
▪ Snellen’s visual acuity chart, logMAR chart.
23.
24.
25.
26. B.) TREATMENT OF AMBLYOPIA –
Goal of amblyopia treatment is to maximise and potentially normalise
visual acuity.
Strategy of treat amblyopia it includes –
▪ Elimination of the cause of visual deprivation and provision of clear
retinal image in amblyopic eye.
▪ Correction of ocular dominance.
▪ Perceptual training.
27. 1.) ELIMINATION OF THE CAUSE OF VISUAL DEPRIVATION AND
PROVISION OF CLEAR RETINAL IMAGE –
#)MEDIA CLEARANCE –
▪ Media clearance, whenever required, is the first step of amblyopia
management.
▪ Childhood cataract,when present, should be operated as early as
possible with appropriate corrections.
▪ Severe congenital ptosis should be corrected at the earliest.
▪ Corneal opacity should be treated by penetrating keratoplasty.
28. #) CORRECTION OF REFRACTIVE ERROR SND SPECTACLE
ADAPTATION –
▪ Refractive error, if any, should be fully corrected as
determined with cycloplegic refraction before starting the
amblyopia therapy.
▪ Spectacles adaptation for 3-4 weeks should be tried
anisometropic amblyopia before starting occlusion therapy.
29. 2.) CORRECTION OF OCULAR DOMINANCE –
It is done by stimulating the amblyopic eye with the use of following
modalities alone or in combination.
▪ Occlusion therapy
▪ Penalization
▪ Active stimulation
▪ Pleoptics
▪ Pharmacological manipulation
30. 1.) OCCLUSION THERAPY –
▪ Occlusion of the sound eye ( normal eye) is the most powerful means
of treating amblyopia by forcing the patient to use amblyopic eye.
Methods of Occlusion –
▪ Occlusion can be accomplished by an adhesive patch on skin, gauze
pad and tape, use of Doynes rubber occluded which can be stuck to
the spectacle lens, opaque contact lens, adhesive tape on glass or any
method that excludes the use of occluded eye.
▪ Adhesive skin patch is the best method.
▪ Some problems may arise in children with sensitive skin.
▪ If application of tincture of benzoin before the patch is applied on the
skin also does not help than other methods may be tried as a
substitute for a patch.
31.
32. DIRECT VERSUS INDIRECT (INVERSE) OCCLUSION –
▪ Direct Occlusion refers to occlusion of the sound eye.
▪ Indirect Occlusion refers to Occlusion of the amblyopic eye.
FULL TIME VERSUS PART TIME OCCLUSION –
▪ Full tine occlusion involves placing the occluded over the eye as soon
as the child gets up in the the morning and removing only after the
child goes to bed at night.
▪ Part time Occlusion involves use of the occluded for short time each
day.
33.
34. HOWTO GO ABOUT OCCLUSION-
▪ Complianceis the keyword of success in Occlusion therapy and
should be ensured by motivating the child and parents.Once the near
vision then the distance vision, start improving.
▪ Active vision exercises by the amblyopic eye during occlusion
therapy, may enhance the success of Occlusion.
▪ Simple tasks like dotting, joining dots to make drawing, tracing,
threading beads,watching television, reading comics and story
books may be quite useful and enhance the recovery.
▪ Computer games,a very useful in occlusion therapy.
▪ In patients with improvement in vision assessed at monthly follow up
visits, the occlusion should be continued till amblyopic eye has not
only developed equal vision but also equal preference of fixation
compared to the normal eye.
▪ In patients with no improvement with occlusion, on three consecutive
follow up visits, further occlusion unlikely to be fruitful.
35. MAINTENANCE OCCLUSIONTREATMENT –
▪ Once the vision has been equalized, the Maintenance Occlusion
should be continued till the amblyogenic age i.e. Up to atleast 9
years of age and sometimes even till the child has reached early
teens.
▪ Maintenance Occlusion is accomplished by a part time Occlusion
for 2-3 hours in a day with active vision exercises at home.
36. 2.) PENALIZATION-
PRINCIPLE –
▪ The word penalization literally means to punish or to inhibit.
▪ The principle is to force the amblyopic eye to a greater use
for distance, near or both by penlizing the sound eye for
distance, near or both with the help of glasses or a
cycloplegic drug.
▪ The eyes should be straight.
▪ It is the best method used in anisometropic amblyopia.
37.
38. 4.) PLEOPTICS-
▪ Pleoptics means full vision.
▪ Used for active stimulation of the fovea to overcome eccentric
fixation and improves the visual acuity.
▪ In this technique, the peripheral retina is dazzled with an intense
light protecting foveal area.
▪ After the light source is turned off, the fovea functions better.
▪ This can be followed by direct stimulation of fovea by pleoptophore
or indirectly by producing after image.
39. DEMERITS –
▪ The technique is complex and requires an absolute
cooperation of the patient and intelligence to appreciate after
images.
▪ Daily sitting for a longer period of time is required.
▪ Since Occlusion of the sound (dominant) eye is a very
successful, simple and inexpensive method of treating
eccentric fixation, so the use of Pleoptics method is abandoned.
▪ Only indication is cooperative and intelligent child older than
6 years having eccentric fixation.