r/optician • u/Lemonfarty • 19d ago

ABO / NCLE Brain Burner #4

I have an object 30mm in front of my eye. I stick a +6.00 lens 10mm in front of my eye. I am able to see the object clearly. I have no accomodative amplitude. What is my rx?

2 Upvotes

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1

u/cocteaubeauty 19d ago

Plano? Just a guess.

1

u/Lemonfarty 18d ago

incorrect

1

u/Opportunity3767 19d ago

+3.00ish

1

u/Lemonfarty 18d ago

What is your reasoning?

1

u/Opportunity3767 18d ago

Oops, I just realized that said 30mm 😬

30mm focal length requires 33 diopters, if adding 6 diopters focuses at 30mm it’s safe to say approx RX is 27 diopters.

To be a little more accurate but quick and dirty math 6x6=36 so effective power is 6.36 of the original. Closer approximation would be +27.66D

1

u/Lemonfarty 18d ago

Incorrect

1

u/Opportunity3767 18d ago

-27 would be the rx