Prashant Bhatkar
Prashant Bhatkar
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Eye Anatomy | Dimensions | Axes & Angles Of The Eye
In this session we will learn about the dimensions , axes and angles of the eye.
The structure of the eye is an important topic to understand as it one of the important sensory organs in the human body. It is mainly responsible for vision, differentiation of colour and maintaining the biological clock of the human body. The human eye can be compared to a camera as both works by gathering, focusing and transmitting the light through the lens for creating an image of an object.
Contrary to popular belief, the eyes are not perfectly spherical; instead, it is made up of two separate segments fused together. To understand more in detail about our eye and how our eye functions, we need to look into the structure of the human eye.
Переглядів: 306

Відео

What Is Spherical Aberration ? Why To Use Aspheric Lens ?
Переглядів 1 тис.Рік тому
This video explains the basic concept of spherical aberration and its solution as Aspheric lenses. What is a spherical aberration? It is a phenomenon in which the outer parts of a lens do not bring light rays into the same focus as the central part. Rays passing through the lens close to its centre are focused farther away than rays passing through a circular zone near its rim. This occurs beca...
Lens Identification I Image Movement Direction Through A Lens I Step 3
Переглядів 522Рік тому
This video explains the identification of lens through the image movement direction. Identifying lenses is critical and can be done using 3 simple steps. One way to identify lenses is by observing the movement of an image as it passes through the lens. A convex lens is thicker at the center than at the edges. On the other hand, a concave lens is thinner at the center than at the edges and diver...
What Are Aberrations Of The Eye ? Higher Order Aberrations I Lower Order Aberrations
Переглядів 1,3 тис.Рік тому
This video gives a basic understanding about aberrations of the eye. The human eye can be affected by a number of aberrations which can reduce the quality of retinal images and general visual perception. Research has shown that age increases the probability of developing higher order aberrations in particular. Aberrations are described as small optical irregularities, imperfections of the eye t...
Convex And Concave Lens I Lens Identification I Step 2
Переглядів 625Рік тому
This video explains step 2 of lens identification. It helps us diffrentiate between a convex and concave lens. A concave lens is thicker at the edges and thinner at the centre. A convex lens is thicker at the centre and thinner at the edges. Due to the diverging rays, it is called a diverging lens. Due to the converging rays, it is called a converging lens.
Spherical Vs Cylindrical Lens I Lens Identification I Step 1
Переглядів 1,6 тис.Рік тому
This video explains the step 1 of lens identification to differentiate between spherical and cylindrical lens. Identifying lenses is critical and can be done using 3 simple steps. One way to identify lenses is by observing the image as you rotate the lens. When you're considering a cylindrical lens versus a spherical lens, the most important distinction is where the lens brings light into focus...
How To Identify Spherical & Cylindrical Lenses ? Lens Identification Made Easy
Переглядів 2,7 тис.Рік тому
This video explains how to differentiate between spherical & cylindrical lenses. Identifying lenses is critical and can be done using 3 simple steps. One way to identify lenses is by observing the movement of an image as it passes through the lens. A convex lens is thicker at the center than at the edges. On the other hand, a concave lens is thinner at the center than at the edges and diverges ...
What Is A Lens ?
Переглядів 201Рік тому
This video gives preliminary explanation about a lens , lens types & its application.
Best Spectacles For Kids| Kids Glasses| Pediatric Optometry #optometry
Переглядів 194Рік тому
0:00 Introduction 0:29 Dispensing Eyewear To The Little Champions 1:54 Role Of Communication 4:17 Common Negative Thoughts 6:47 How To Communicate 9:03 Pre-Dispensing Reminders 14:47 Smaller Crest Height 15:50 Bridge Shape 17:36 Frame Width 18:53 Pantoscopic Angle 19:34 Temple Types 21:06 Frame Selection: Key Points 25:02 Lens Selection 27:24 Bifocals 28:35 Prisms, Progressives, Myopia Control ...
Artificial Intelligence Transforming Optometry & Ocular Diagnostics #deeplearning #optometry
Переглядів 3963 роки тому
Artificial Intelligence Transforming Optometry & Ocular Diagnostics #deeplearning #optometry
Contact Lens Basics #Optometry
Переглядів 3363 роки тому
Contact Lens Basics #Optometry
Role Of Optometrist In Public Health | Transforming Lives #communityhealth
Переглядів 1 тис.4 роки тому
"Development is about transforming the lives of people, not just transforming economies" Ms. Snehal Jadhav is a young, confident Optometrist dedicated to work for community in transforming their lives by facilitating the joy of vision and making a positive difference.
Contact Lens Types I Difference Between Corneal , Corneoscleral & Scleral Lenses
Переглядів 9834 роки тому
Contact lenses are artificial devices applied on the eye's front surface to substitute for the anterior corneal surface. They help correct the cornea's refractive error, irregularities, and surface abnormalities. The idea of contact lenses was first proposed in 1508 by Leonardo da Vinci, who gave birth to the concept of neutralization of the cornea by a new refracting surface. In 1946, contact ...
What Is Contact Lens ?
Переглядів 3834 роки тому
This video explains the contact lens classification on the basis of its application & the purpose of use. One important application of contact lens missed in this video is orthokeratology. Topics covered in the video: What Is Contact Lens ? A contact lens is a thin, curved lens placed directly on the surface of the eye. Contact Lens Application: Optical, Cosmetic, Therapeutic Contact Lens Class...
Cornea | Corneal Anatomy | Corneal Dimensions
Переглядів 5194 роки тому
Corneal Dimensions This video presents a quick review of the corneal dimensions.
Why Prism In A Progressive Lens ? Prism Reference Point | Progressive Addition Lens
Переглядів 1,8 тис.4 роки тому
Why Prism In A Progressive Lens ? Prism Reference Point | Progressive Addition Lens
How To Identify An Unknown Progressive Lens ? Progressive Addition Lens Part 5
Переглядів 1,3 тис.4 роки тому
How To Identify An Unknown Progressive Lens ? Progressive Addition Lens Part 5
Red Dot Procedure|Subjective Verification Of Progressive Markings #Optometry
Переглядів 6834 роки тому
Red Dot Procedure|Subjective Verification Of Progressive Markings #Optometry
Can We Dispense Progressives To Children ?| Fitting Height #Optometry
Переглядів 6654 роки тому
Can We Dispense Progressives To Children ?| Fitting Height #Optometry
Progressive Addition Lens Part 2 | Fitting Measurements #Optometry
Переглядів 9354 роки тому
Progressive Addition Lens Part 2 | Fitting Measurements #Optometry
Progressive Addition Lens Part 1| Frame Selection| Short Corridor| Occupational Progressive
Переглядів 1,8 тис.4 роки тому
Progressive Addition Lens Part 1| Frame Selection| Short Corridor| Occupational Progressive
What Is Transient Visual Loss ? Decreased Vision Part 1 #OptometryRevision
Переглядів 8764 роки тому
What Is Transient Visual Loss ? Decreased Vision Part 1 #OptometryRevision
What is Dry Eye Syndrome? #Optometry|Quick Revision
Переглядів 2294 роки тому
What is Dry Eye Syndrome? #Optometry|Quick Revision
Van Herick Slit Lamp Technique | Angle Grading Technique | Anterior Chamber Angle Test
Переглядів 17 тис.4 роки тому
Van Herick Slit Lamp Technique | Angle Grading Technique | Anterior Chamber Angle Test
Anatomy Of Anterior Chamber Angle | Eye Anatomy
Переглядів 12 тис.4 роки тому
Anatomy Of Anterior Chamber Angle | Eye Anatomy
Iris Anatomy | Iris Physiology | Eye Anatomy
Переглядів 4 тис.4 роки тому
Iris Anatomy | Iris Physiology | Eye Anatomy
Uveal Tract Anatomy | Iris | Ciliary Body | Choroid | Eye Anatomy
Переглядів 27 тис.4 роки тому
Uveal Tract Anatomy | Iris | Ciliary Body | Choroid | Eye Anatomy
Eye protectors for sports |SportsEyewear|Optometry#SportsVision
Переглядів 7004 роки тому
Eye protectors for sports |SportsEyewear|Optometry#SportsVision
First Aid | Sports Eye Injuries #SportsVision#OPTOMETRY
Переглядів 4584 роки тому
First Aid | Sports Eye Injuries #SportsVision#OPTOMETRY
Sports Eye Injuries Part 3| Types | Sports Vision #OPTOMETRY
Переглядів 4114 роки тому
Sports Eye Injuries Part 3| Types | Sports Vision #OPTOMETRY

КОМЕНТАРІ

  • @srujanachowdary4624
    @srujanachowdary4624 2 місяці тому

    Sir i have vision loss for 20 to 30 mins. After that it became normal. I have consulted opthalmologist. They said eyes are normal. But this happened 2 times in 4 years What precautions i should take or what are the tests i should get done? Please reply 🙏

  • @bambholayadav5605
    @bambholayadav5605 3 місяці тому

    ⁹⁹9

  • @vandanamisra7127
    @vandanamisra7127 6 місяців тому

    So crisp n clear!!

  • @mankiuljhan
    @mankiuljhan 7 місяців тому

    Superb 😊

  • @K00711
    @K00711 8 місяців тому

    Is high order abbertions affect near vision also?

  • @user-zg7tn8ue7o
    @user-zg7tn8ue7o 9 місяців тому

    Please upload the telugu language

  • @sanjaykhatri3327
    @sanjaykhatri3327 10 місяців тому

    Very helpful 🎉

    • @prashantbhatkar
      @prashantbhatkar 10 місяців тому

      Thanks Sanjay ! Glad it was helpful.

  • @wayne12119
    @wayne12119 11 місяців тому

    Simple & to the point explaination .

  • @wayne12119
    @wayne12119 11 місяців тому

    You should have a podcast for this topic. That would be much valuable. Good work Prashant !

    • @prashantbhatkar
      @prashantbhatkar 10 місяців тому

      Thanks for commenting. Will surely work on your suggestion.

  • @Nisha-mg2mg
    @Nisha-mg2mg 11 місяців тому

    Love this ❤It would be nice if you could share something in detail about the high exe bif for squint.

    • @prashantbhatkar
      @prashantbhatkar 11 місяців тому

      Thanks Nisha. Will surely share details on high d bifocal for accom esotropia

  • @Nisha-mg2mg
    @Nisha-mg2mg 11 місяців тому

    Good PAL playlist. Thanks Prashant 😍

  • @mani12980
    @mani12980 11 місяців тому

    Quick dry eye revision

  • @arvinda28
    @arvinda28 11 місяців тому

    Too short video but the playlist is detailed. thanks

  • @rimieyes
    @rimieyes 11 місяців тому

    Aberrations High order - Low order aberrations How to manage aberrations

    • @prashantbhatkar
      @prashantbhatkar 11 місяців тому

      That's right 👍 Thanks for commenting Rimi!

  • @rajan12366
    @rajan12366 11 місяців тому

    Prism Reference Point

  • @Rakhi649
    @Rakhi649 11 місяців тому

    What if the vision loss is sudden ??

    • @prashantbhatkar
      @prashantbhatkar 11 місяців тому

      Hi Rakhi! There's a list of eye conditions which can have a sudden vision loss. Common causes could be eye injury, retinal artery/ vein occlusion. Most importantly this should be confirmed by a detailed eye examination at an eye care centre.

  • @Rakhi649
    @Rakhi649 11 місяців тому

    Interesting !

  • @Rakhi649
    @Rakhi649 11 місяців тому

    Good one !

  • @rahimdawar6290
    @rahimdawar6290 Рік тому

    Sir Which book you use for opthalmology??

    • @prashantbhatkar
      @prashantbhatkar Рік тому

      Dear Rahim! I read Comprehensive Ophthalmology by A K Khurana to learn Ocular Anatomy. I also enjoy reading Kanski's Clinical Ophthalmology.

  • @tinystudent
    @tinystudent Рік тому

    Explained clearly ♥️. Good job

  • @gargishouseofknowledge5134

    Great Video

  • @nidhishgosai7523
    @nidhishgosai7523 Рік тому

    Much worthy diagram and well explained

  • @EyeCareAdvisor
    @EyeCareAdvisor Рік тому

    Great explanation

  • @muneerr.m.r4037
    @muneerr.m.r4037 Рік тому

    Thank you sir, it's very informative

  • @mihirangadissanayake9099
    @mihirangadissanayake9099 Рік тому

    Sir i have sudden vision loss for less then second.please tell me what happened?

    • @prashantbhatkar
      @prashantbhatkar Рік тому

      Hi Mihiranga. Transient vision loss for a second or less may not be clinically significant. But it would be advisable for you to go for a detailed eye examination by an Optometrist /Ophthalmologist at a nearby Eye Hospital to rule out any eye condition. Take care!

    • @roopaofficial5633
      @roopaofficial5633 Рік тому

      Hi Sir, DIMNESS (improved now 90%), LONG DISTANCE MILD CLARITY LOSS, FLOATERS, GHOSTING IMAGES OF ROUND LIGHT SOURCES AND SHADOW OF TEXT on TV.. RETINA GOOD, VISUAL FIELD TEST GOOD Explaination: I had dim vision for 10 days. It's like transaparent black small dots collected together to form a shadow effect, in short very dull vision, so lights were not enough how much ever bright we put. Then fixed placed floaters appeared around 12 not annoying to vision, some small black some transparent. Ever since 1st day, I had LONG DISTANCE clarity loss.. notice it on buildings which were once super crisp and clear. Now there is some air like thing I notice on the building and smoothning its surface causing little loss of clarity. My blood vessels were so popped up in my eyes too..but not a red eye..just vessels bulged..what could I have suffered??

    • @prashantbhatkar
      @prashantbhatkar Рік тому

      @@roopaofficial5633Hi Roopa ! Just visit a nearby eye care center. If you have already visited & everything is with in normal limits then just relax. Get well soon.

  • @thatwolfyouknow8598
    @thatwolfyouknow8598 Рік тому

    This is very well done. I like how you are able to put the information into context so it makes sense why things are named the way they are and what the big picture is as well as the details. Thank you very much

  • @aiimsstudypoint4525
    @aiimsstudypoint4525 2 роки тому

    ua-cam.com/play/PL7g9nPREHXpCi4LI6le6uBSayyx9SZePy.html

  • @aiimsstudypoint4525
    @aiimsstudypoint4525 2 роки тому

    ua-cam.com/channels/BqlOlrvm6taGwjdi1tS73A.html

  • @vaibhavagnihotri8933
    @vaibhavagnihotri8933 2 роки тому

    Thanks sir

  • @kushagarpathania8219
    @kushagarpathania8219 2 роки тому

    Very helpful 💯💯

  • @mukeshnld
    @mukeshnld 2 роки тому

    THANK U SIR.. EXCELLENT ONE!

  • @joseph-wg9ul
    @joseph-wg9ul 2 роки тому

    Hi , how do we know which one to choose. I have tried large sclerals it's not working for me. Do you think small one like corneo or mini scleral can work for me is there chance, please tell me that difference you know about them other than the size thankyou.

  • @Sabitabratapanja45
    @Sabitabratapanja45 2 роки тому

    Nice sir and very informative

  • @luvmia97blogspot
    @luvmia97blogspot 2 роки тому

    This so helpful!!! Especially for a student like me. Thank you ^_^

  • @kundaganatra3533
    @kundaganatra3533 2 роки тому

    Sincerely done work is always praiseworthy. Really proud of you. You are doing work for the needy poeple who are many times neglected.Hope the Optometry work is recognized & valued.

  • @dr.namirakulsum1432
    @dr.namirakulsum1432 2 роки тому

    Sweet and simple

  • @Rinsasmr
    @Rinsasmr 2 роки тому

    Thank you so much!!! I understand it so much better!!

  • @arfi_1
    @arfi_1 3 роки тому

    is there any paper publications related to this presentation?

    • @prashantbhatkar
      @prashantbhatkar 3 роки тому

      Hi Arfi. Kindly share your mail id. I would definitely forward the supporting content. 👍🏼

  • @jayamalviya1203
    @jayamalviya1203 3 роки тому

    great video

  • @rahulprasath5836
    @rahulprasath5836 3 роки тому

    nice work sir

  • @shreedharkhadka5893
    @shreedharkhadka5893 3 роки тому

    Nice Great Initiation!! All the best sir...

  • @saiharnim9917
    @saiharnim9917 3 роки тому

    RIO GOH Student

  • @pratikshakaranjkar9097
    @pratikshakaranjkar9097 3 роки тому

    Thank you sir, we need more videos

  • @ashwathisandheep2845
    @ashwathisandheep2845 3 роки тому

    Very useful sir👍

  • @sapnasharma6636
    @sapnasharma6636 3 роки тому

    👌👌👍

  • @drsmri4830
    @drsmri4830 3 роки тому

    Hi sir, wanted to know that the height 4mm above the pupillary centre is for regular Executive bifocals or PAL or progressive lenses (myopia control). Also what is the preferred near add for prescription of bifocals for myopia control of 7 yr old with 3D myopia?

    • @prashantbhatkar
      @prashantbhatkar 3 роки тому

      Hi. In case of kids with convergence excess accommodative esotropia while dispensing executive bifocals, the segment height should be at the pupillary center. For the same patient if you plan to dispense a progressive lens, fitting cross height should be 4mm higher than the pupillary center. However the preferred option would be to dispense an executive bifocal.

    • @prashantbhatkar
      @prashantbhatkar 3 роки тому

      Also, most PAL studies for myopia control have used +1.50 or + 2.00 Add. However in practice, individualising the add depending on the binocular vision status (phoria, accommodative lag) & visual comfort is critical. Thank you 😊