El óptico graduó la lente y ahora enfoco mejor.

In Spain, óptico often refers to the professional or shop related to glasses and lenses. Depending on context, it can mean optician, and in everyday speech people may use it for the person who deals with your lenses or glasses.

A learner should know that:

• óptico = usually optician / optical professional
• optometrista = optometrist, a more specific technical term

So el óptico sounds natural in everyday Spanish, especially in Spain.

Here graduar has a special meaning related to vision and lenses. It means something like:

• to determine the correct prescription
• to adjust the strength of a lens
• to prescribe the right optical power

So El óptico graduó la lente means the optician adjusted or prescribed the lens correctly.

This is a good example of a false friend: graduar does not usually mean to graduate in this context.

Graduó is the preterite of graduar: he/she graduated/adjusted/prescribed.

The preterite is used because this is seen as a completed action in the past:

• The optician adjusted the lens.
• That action is finished.
• As a result, now the speaker focuses better.

So the structure is:

• past completed action: El óptico graduó la lente
• present result: y ahora enfoco mejor

The accent in graduó shows that the ending is pronounced as -ó, the stressed final syllable of the preterite form.

Compare:

• graduo = I graduate / I adjust
• graduó = he/she graduated / adjusted

The accent is important because it changes both:

• pronunciation
• meaning

So graduó is specifically the third person singular preterite.

Yes. In Spanish, lente is normally feminine:

• la lente
• una lente

So the sentence correctly says la lente.

Also, lente can mean:

• a lens
• sometimes a corrective lens in glasses or contact lenses, depending on context

Because the sentence is talking about one specific lens.

Spanish uses the singular here if the speaker means:

• one lens
• one side of the glasses
• one particular corrective lens

If you wanted to talk about both lenses, you could say las lentes. If you meant the glasses as a whole, in Spain you would very often hear las gafas instead.

Enfoco is the first person singular present of enfocar:

• enfoco = I focus / I am able to focus

Here it means that the speaker can now bring things into focus better with their eyes.

So ahora enfoco mejor means:

• now I focus better
• now I can focus better

It suggests an improvement in visual clarity after the lens was adjusted.

Both are possible, but they are not exactly the same.

• veo mejor = I see better
• enfoco mejor = I focus better

Enfoco mejor is more specific. It refers to the eyes’ ability to focus properly, which fits well with the idea of an adjusted lens.

So this sentence is a bit more precise than simply saying I see better.

Ahora means now, and it highlights the contrast between:

• before the lens adjustment
• after the lens adjustment

So the sentence has a clear cause-and-result feeling:

• the optician adjusted the lens
• now I focus better

Without ahora, the sentence would still be grammatical, but ahora makes the improvement more explicit.

Spanish often omits subject pronouns when they are clear from the verb form.

• enfoco already means I focus
• so yo is not necessary

You could say yo enfoco mejor, but it would usually add emphasis, for example:

• Yo enfoco mejor, pero mi hermano no.

In a neutral sentence, enfoco mejor is the normal choice.

Yes. In this sentence, graduar belongs to the vocabulary of:

• optics
• prescriptions
• lenses
• glasses

In everyday learner terms, it means something like to set the correct prescription strength.

You may also hear related forms such as:

• lentes graduadas = prescription lenses
• gafas graduadas = prescription glasses

So this use of graduar is very common in the context of vision correction.

A careful Spain pronunciation would sound roughly like:

el ÓP-ti-co gra-du-Ó la LEN-te i a-Ó-ra en-FÓ-co me-JOR

A few useful notes:

• óptico has stress on ÓP
• graduó has stress on the final Ó
• enfoco has stress on FÓ
• in most of Spain, c before e/i is pronounced like the th in think, so:
  • óptico
  • lente
  • enfoco may sound different from Latin American pronunciation

Yes. That version is also natural and adds the indirect object me:

• El óptico me graduó la lente

This means literally:

• the optician adjusted the lens for me

The original sentence without me is still perfectly fine. Adding me just makes the personal involvement more explicit.