Optyk dopasuje oprawki.

Here optyk means optician — the person who works with glasses, lenses, and frames.

A few useful grammar points:

• optyk is a masculine singular noun
• in this sentence it is in the nominative case, because it is the subject
• Polish has no articles, so optyk can mean the optician or an optician, depending on context

Also, in everyday Polish, optyk can sometimes refer to an optician’s shop, but in this sentence it clearly means the person.

Because dopasuje comes from the perfective verb dopasować.

In Polish, perfective verbs do not normally describe an action happening right now. Their present-tense-looking forms usually refer to a completed action in the future.

So:

• dopasuje = will fit / will adjust
• not is fitting or fits in the ordinary present sense

This is a very common feature of Polish aspect.

The infinitive is dopasować.

So:

• dopasować = perfective infinitive
• dopasuje = he/she/it will fit / adjust

A few related forms:

• ja dopasuję = I will fit
• ty dopasujesz = you will fit
• on/ona/ono dopasuje = he/she/it will fit

The imperfective partner is dopasowywać.

Very roughly:

• dopasować = to fit/match successfully, as a completed result
• dopasowywać = to be fitting, adjusting, matching; to do it as a process or repeatedly

So if you want to emphasize the process, Polish often uses the imperfective.
If you want to emphasize the completed result, Polish often uses the perfective.

That is why dopasuje works well here: it suggests a completed fitting/adjustment.

Because oprawki means frames, especially eyeglass frames, and this is naturally used in the plural.

Compare English:

• we often say glasses
• Polish often says oprawki

There is also a singular form:

• oprawka = a frame / rim / setting

But when talking about glasses frames as an item, oprawki is the normal word.

Here oprawki is in the accusative plural, because it is the direct object of dopasuje.

Why does it look the same as the dictionary form?

Because for nouns like oprawki:

• nominative plural = oprawki
• accusative plural = oprawki

So the form does not change here.

A useful contrast:

• oprawek is genitive plural
• that is not the form used in this sentence

Because Polish does not have articles.

So:

• optyk can mean the optician or an optician
• oprawki can mean the frames or just frames

Polish relies on:

• context
• word order
• emphasis
• sometimes additional words

to show whether something is definite or indefinite.

No, Polish word order is much more flexible than English word order.

Optyk dopasuje oprawki is a very natural, neutral order:

• subject + verb + object

But you could also hear other orders, for example:

• Oprawki dopasuje optyk
• Optyk oprawki dopasuje

These alternatives usually change the emphasis, not the basic meaning.

Because Polish uses case endings, the sentence can stay understandable even when the order changes.

Yes.

Polish often leaves out subject pronouns and even subject nouns when the context is clear.

So you could say:

• Dopasuje oprawki.

That would mean something like:

• He/She will fit the frames.

The verb form dopasuje already tells you:

• 3rd person
• singular

But it does not tell you whether the subject is he or she, so if that matters, Polish often includes the noun or relies on context.

A rough English-friendly guide is:

OP-tik do-pa-SOO-ye o-PRAF-kee

A few important details:

• optyk: the y is not exactly like English i; it is a distinct Polish vowel
• dopasuje: stress goes on SU
• oprawki: the w is normally like English v, but before k it sounds closer to f, so oprawki sounds roughly like o-PRAF-kee
• Polish stress is usually on the second-to-last syllable

If you want an IPA version:

[ˈɔptɨk dɔpaˈsujɛ ɔˈprafkʲi]

It usually means to fit, match, or adjust so that something suits someone properly.

In an optician context, that can include ideas like:

• selecting frames that suit the person
• making sure the frames fit properly
• adjusting them to the wearer

So it is broader than simply:

• put on
• pick
• show

The core idea is making the frames fit or suit the person well.