העדשות הפרוגרסיביות נמצאות במסגרת המשקפיים.

Because in Hebrew, adjectives usually come after the noun they describe.

So:

• העדשות = the lenses
• הפרוגרסיביות = the progressive ones / progressive

Together:

• העדשות הפרוגרסיביות = the progressive lenses

This is the normal Hebrew word order:

• noun + adjective

For an English speaker, this is one of the most important word-order differences to get used to.

In Hebrew, if a noun is definite (the...), its adjective usually has to be definite too.

So:

• עדשות פרוגרסיביות = progressive lenses
• העדשות הפרוגרסיביות = the progressive lenses

Both words take ה־ because they belong together as a definite noun phrase.

This is very common in Hebrew:

• הספר החדש = the new book
• הילדה הקטנה = the little girl
• העדשות הפרוגרסיביות = the progressive lenses

Because it has to agree with עדשות in gender and number.

עדשה = lens
עדשות = lenses

עדשות is:

• plural
• feminine

So the adjective must also be:

• plural
• feminine

That gives:

• singular feminine: פרוגרסיבית
• plural feminine: פרוגרסיביות

Even though פרוגרסיבי/ת is a borrowed word based on progressive, it still follows normal Hebrew agreement patterns.

The singular noun is עדשה, and nouns ending in ־ה are very often feminine.

So:

• עדשה = singular feminine
• עדשות = plural feminine

Because of that, the verb and adjective in the sentence also appear in feminine plural form:

• הפרוגרסיביות
• נמצאות

This kind of agreement is a major feature of Hebrew grammar.

Hebrew usually does not use a separate present-tense word for am / is / are the way English does.

Instead, for location or existence, Hebrew often uses words like נמצא / נמצאת / נמצאים / נמצאות, which literally mean something like:

• is found
• is located
• are located

So:

• העדשות הפרוגרסיביות נמצאות...
  = The progressive lenses are located... / are in...

This sounds natural in Hebrew when talking about where something is.

Because it agrees with העדשות, which is feminine plural.

The present-tense forms of נמצא change according to gender and number:

• נמצא = masculine singular
• נמצאת = feminine singular
• נמצאים = masculine plural
• נמצאות = feminine plural

Since העדשות is feminine plural, the sentence uses:

• נמצאות

Here it means are located or simply are in the sense of physical location.

So the sentence is not saying that the lenses “exist” in some abstract way. It means they are physically situated in the glasses frame.

Depending on context, נמצא / נמצאת / נמצאים / נמצאות can mean:

• is/are located
• is/are found
• sometimes is/are present

In this sentence, are located is the most helpful sense.

This is a very common Hebrew pattern.

The word ב means in / inside / within.

If you just had in the frame, you might expect במסגרת to come from ב + המסגרת. In many cases, ב + ה combines into one form.

But here there is also another important point: מסגרת המשקפיים is understood as a connected phrase meaning:

• the frame of the glasses
• the glasses frame

So במסגרת המשקפיים means:

• in the frame of the glasses

Hebrew often expresses X of Y by placing the nouns together, without של.

Yes. That is exactly the idea.

This is a Hebrew construct relationship, often called smikhut.

• מסגרת = frame
• המשקפיים = the glasses

Together:

• מסגרת המשקפיים = the frame of the glasses / the glasses frame

A key thing to notice is that the definiteness is carried by the second noun:

• מסגרת משקפיים = a glasses frame / frame of glasses
• מסגרת המשקפיים = the glasses’ frame / the frame of the glasses

So the phrase in the sentence means that the lenses are in that specific frame.

Yes, that would be understandable, but מסגרת המשקפיים is more compact and more natural in many contexts.

Hebrew often prefers the direct noun-noun structure:

• מסגרת המשקפיים

rather than:

• המסגרת של המשקפיים

Both can work, but the construct-style version is very common and often sounds smoother.

משקפיים is the normal Hebrew word for glasses.

The ending ־יים is historically associated with the dual form in Hebrew, often used for things that come in pairs. You also see this with words like:

• עיניים = eyes
• אוזניים = ears
• מכנסיים = pants/trousers
• משקפיים = glasses

For a learner, the most useful thing is simply to recognize משקפיים as the standard word for glasses.

It could, depending on style and nuance, but במסגרת is perfectly natural.

• ב־ = in
• בתוך = inside

בתוך can sometimes sound a little more physically “inside,” while במסגרת already naturally expresses being in the frame.

So:

• העדשות הפרוגרסיביות נמצאות במסגרת המשקפיים
  sounds natural as The progressive lenses are in the glasses frame.

It sounds fairly neutral, maybe slightly technical because of words like העדשות הפרוגרסיביות and נמצאות.

In everyday casual speech, a person might also say something a little simpler, depending on context. But this sentence is absolutely normal and correct, especially in an optical, medical, or descriptive context.

A simple pronunciation guide is:

ha-a-da-shot ha-pro-gre-si-vi-yot nim-tza-ot be-mis-ge-ret ha-mish-ka-fa-yim

A slightly smoother transliteration:

ha-adashot ha-progressiviyot nimtza'ot bimisgeret ha-mishkafayim

A few helpful pronunciation notes:

• עדשות = adashot
• פרוגרסיביות = progressiviyot
• נמצאות = nimtza'ot
• משקפיים = mishkafayim

Yes, as a learning tool, that is actually quite useful.

A literal-ish breakdown is:

• העדשות = the lenses
• הפרוגרסיביות = the progressive
• נמצאות = are located
• במסגרת = in the frame of
• המשקפיים = the glasses

So the sentence structure is roughly:

the lenses the-progressive are-located in-frame-of the-glasses

That kind of word-for-word breakdown can help you see the Hebrew grammar clearly, even if it sounds unnatural in English.