I want to change the plus cylinder lenses into plus spheric lenses ...is that possible?

It comes with both types of lenses.

Anyone know if theses are FSA eligible, if one is buying for personal diagnostic use?

I would check the rules of my FSA if I wanted to deduct the cost, not others

Can the frame hold 2 lenses per eye> for example, if i insert a -7,00 d sphere , can i also insert an -0.25d sphere as well?

The frame holds three sets of lenses. However, the frame is very flimsy plastic. If the frame will be used frequently, it might be best to purchase one that is sturdier.

What is the combination to the lock?

These things generally come factory-set with "000" as the combination, which mine did. I never changed it because I am not traveling with it - it lives in my office. If yours did not - good luck, as there are of course 1,000 possible.

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👓 Unlock Precision. Elevate Your Eye Exams.

WIDE FIELD OF VIEW - 36mm inner diameter rims provide expansive vision coverage, enhancing test accuracy and patient comfort.
SECURE SLEEK STORAGE - Premium aluminum case with customizable combination lock keeps your lenses safe and organized on the go.
PRECISION VISION TESTING - 266 glass lenses with metal rims ensure ultra-accurate diopter readings for professional-grade eye exams.
VERSATILE DIAGNOSTIC TOOL - Ideal for optometrists and vision testers to diagnose myopia, hyperopia, astigmatism, and more with confidence.
EFFORTLESS LENS IDENTIFICATION - Engraved handles and printed power markings let you quickly find the exact lens you need—no guesswork.

The UCanSee 266 pcs Optical Trial Lens Set features high-quality glass lenses with metal rims for precise diopter measurements, housed in a durable aluminum case with a customizable combination lock. Designed for professional optometrists and vision testers, this comprehensive kit covers spherical, cylindrical, and prismatic lenses, ensuring accurate diagnosis of a wide range of refractive errors.