The schematic eye

[@alangobeh4691]

Beautiful explanations of this complicated topic.

[@shivalisrivastava6406]

Thank you Ma'am, this is a tough topic :-) you make it easy to understand

[@RuRuu592]

It really is a tough topic

[@DipenKumarkamat]

very informative mam

[@qwertyqwe7706]

Perfect mam.!
Your channel will gain popularity in future for sure.
Thank you and all the best mam

[@ophthalmologypearls]

Thank you dear.

[@gautamujjwal8221]

Mam how is tan equal h/f1 ..how f1 comes ..as f1 is measured from principal point not nodal right??

[@KennyChinga-gc6zl]

Very good explanation

[@syarafinamalek2668]

161223

[@cmnaveenmusic]

Thank you for considering my request mam!

[@ophthalmologypearls]

You're welcome. Pinhole releasing tomorrow 5 pm

[@dr.k6619]

Hats off

[@HadiaNaveed-n4t]

the answer is D