Aphakia | Pitfalls of Aphakic Glasses

The misery of Aphakic Patients! Complete guide on Optics and challenges with aphakic spectacles.
In the realm of visual impairment, aphakia stands as a unique challenge, altering the landscape of perception for those affected. Stripped of the natural lens that typically serves as the eye's autofocus mechanism, individuals with aphakia often find themselves in a delicate balance between vision and adaptation.
In this video we talk about what is aphakia?. what are the types and causes of aphakia?
How the optics of an eye get altered after aphakia
What changes occur in a eye after aphakia?
What are the pitfalls in correcting aphakia with spectacles?
Image magnification in aphakia
Image distortion in aphakia
Spherical aberration in aphakia
Chromatic aberration in aphakia
Jack in the box phenomenon
Roving ring scotoma aphakia
Cosmetic problem and adaptation issues
#ophthalmology
#optometry
#opticsandrefraction
#insightophthalmology
Important links
Anatomy of lens: • ANATOMY OF LENS | Ever...
theinsightophthalmology.com/e...
Development of lens: • DEVELOPMENT OF EYE( op...
Accommodation lecture: • ACCOMMODATION POWER OF...
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[@shahadabdulhassan9635]

Thank you alot 🎉 we need more vedio about optics of human eye

[@Preetreceipes]

Your explanations are awesome. Thanks mam.

[@MahmudHasan-pg1pt]

mam ,pls make a detailed video on pseduaphakia and IOL power calculation

[@TheSingingSingh874]

Thanks Dr

[@ahmedsugulle7473]

I wish I could give more like for the brilliant explanation.

[@InsightOphthalmology]

Thank you ! Share the knowledge:)

[@Thinkwithme-mt8lu]

Mam i request to make a video on" vergence relationship and Accomodation formula" a topic of visual Optics

[@raulsaavedra709]

I wonder why the AXS for astigmatism is so hard to pinpoint consistently for minor astigmatism, i.e. CYL = -0.25. Even if this astigmatism is the smallest, its correction manages to convey a final sharpness clarity that I very much long for. Have gone to several optometrists and even my ophthalmologist over the years, but I get different AXS numbers from all: 165º, 0º, 14º, 45º, and 88º. Have worn 165º for several years, but my vision in that eye with that correction has been slightly off for some years already. By flippling the lens I could clearly see better, which made me think my actual AXS should rather be around 15º. And by rotating one of my older glasses manually, my own best guess is that it's between 14º and 45º, favoring the 45º end. What puzzles me: how come different measurements done by different professionals just days/weeks apart do not end up relatively close to each other within a narrow range of angles?

[@arthurkorir7846]

You need contact lenses

[@raulsaavedra709]

@@arthurkorir7846 I worn some contacts years ago and stopped wearing them. They weren't as sharp as glasses, and also once a contact got pushed back under my eyelid, that was so uncomfortable and quite difficult to get back out. Since then never again.
After more close and careful inspection, I realized after flipping the older lens, in fact the clarity got better when I turned it very slowly counter clockwise (from my own wearer´s point of view) as opposed to clockwise. So instead of near 45º, my axis I think is between 14º and 0º, favoring the 0º end of that range. Only one out of the last ~8 optometrists have told me my axis for that eye is 0º. One of of eight. Or out of nine really, since the ophtalmologist was also quite off.

[@malikarmaghan-eh4hf]

Can you please make a video on corneal dystrophy and degeneration? Please😢

[@Pankaj-8198]

Thank you ma'am

[@InsightOphthalmology]

Most welcome 😊

[@Eyecare_tips]

Thank you mam❤

[@InsightOphthalmology]

Most welcome 😊

[@Thinkwithme-mt8lu]

mam i think you are taking paraxial rays wrong,paraxial rays are the rays close to the principle axis of the optical system.

[@InsightOphthalmology]

Yes you are right...I meant marginal rays