Bulanık görüntü teşhisi zorlaştırdı.

A very literal breakdown is:

• bulanık = blurry / unclear
• görüntü = image
• teşhis-i = diagnosis + accusative marker
• zorlaştır-dı = made difficult / made harder

So the sentence is structured like:

[subject] blurry image + [object] the diagnosis + [verb] made difficult

That is a very normal Turkish pattern: Subject – Object – Verb.

Because Turkish normally places the main verb at the end of the sentence.

So while English says:

The blurry image made the diagnosis difficult.

Turkish naturally says:

Blurry image + the diagnosis + made difficult.

This is one of the biggest word-order differences between English and Turkish. Turkish is usually SOV (subject-object-verb), while English is usually SVO (subject-verb-object).

The -i on teşhisi is the accusative case ending. It marks the noun as a specific direct object.

• teşhis = diagnosis
• teşhisi = the diagnosis / a specific diagnosis

In this sentence, teşhisi is the thing being affected by the action of zorlaştırdı.

So:

• Bulanık görüntü teşhis zorlaştırdı would sound wrong.
• Bulanık görüntü teşhisi zorlaştırdı is correct.

A useful way to think about it is: if the object is specific, Turkish often marks it with the accusative.

Not always in a strict one-to-one English article sense.

The accusative in Turkish usually shows that the object is specific, and in many contexts that corresponds to English the. So teşhisi is often best understood as the diagnosis or that diagnosis.

But Turkish does not have articles like a and the, so the match is not perfect. The important grammar point is:

• teşhis = non-specific diagnosis
• teşhisi = specific diagnosis

Because adjectives normally come before the noun in Turkish, just like in English.

So:

• bulanık görüntü = blurry image
• büyük ev = big house
• iyi doktor = good doctor

That part is quite familiar for English speakers.

zorlaştırdı can be broken down like this:

• zor = difficult / hard
• -laş- = become
• -tır- / -dır- = make something become; causative
• -dı = past tense

So the overall idea is made difficult or made harder.

Related forms:

• zor = difficult
• zorlaşmak = to become difficult
• zorlaştırmak = to make difficult
• zorlaştırdı = made difficult

This is a very Turkish way of building meaning with suffixes instead of separate words.

There are two main clues:

1. teşhisi has the accusative ending -i, so it is marked as the object.
2. bulanık görüntü has no object marking and fits naturally as the subject.

So the sentence is understood as:

• subject: bulanık görüntü
• object: teşhisi
• verb: zorlaştırdı

In other words, the blurry image is what caused the difficulty.

Because it is the subject, and subjects in Turkish are often in the basic form with no extra ending. This basic form is often called the nominative.

So:

• görüntü = image
• teşhisi = the diagnosis / specific diagnosis (object-marked)

English speakers often expect every noun to show its role with a separate word like the or with fixed word order, but Turkish often shows roles through case suffixes.

In isolation, yes: teşhisi can sometimes be ambiguous.

It could be:

• teşhis-i = the diagnosis / diagnosis-ACC
• or, in another context, something like his/her diagnosis

But in this sentence, the verb and sentence structure strongly point to the accusative object meaning:

The blurry image made the diagnosis difficult.

So here learners should understand teşhisi as the direct object, not as a possessive form.

Because Turkish does not use articles the way English does.

English needs words like:

• a
• the

Turkish usually does not. Instead, Turkish often expresses similar ideas through:

• context
• word order
• case endings such as the accusative -i

So teşhisi can give a specific meaning that English often translates with the, even though Turkish has no separate word for the.

Turkish word order is flexible, but the neutral, most natural order here is:

Bulanık görüntü teşhisi zorlaştırdı.

You may sometimes see other orders for emphasis, such as putting the object earlier or highlighting another part, but the verb usually stays near the end.

For a learner, the safest takeaway is:

• normal order: subject + object + verb
• emphasis can change order
• case endings help show what each noun is doing

So even if word order changes, teşhisi is still the object because of -i.

The most natural translation is usually:

The blurry image made the diagnosis difficult.

Depending on context, you might also see:

• The blurry image made diagnosis more difficult.
• The unclear image complicated the diagnosis.

The key idea is that the poor quality of the image caused the diagnosing process to be harder.