Documentation

FemtoLASIK

The indications for Femtolasik include the correction of myopia, hyperopia and astigmatism in people over 18 years of age with a stable prescription for at least one year. It can also be used in cases of presbyopia, and in some variants such as Femtolasik Xtra for cases of medium-high myopia or hyperopia, although a comprehensive ophthalmological examination is essential to determine individual suitability.

Conditions and corrections

Refractive errors: Myopia, hyperopia, astigmatism, and presbyopia.
Stable prescription: No significant changes in the eye prescription in the last year.
Age: Be over 18 years of age, although ideally over 21 for greater vision stability.

Specific cases

Moderate to high myopia and hyperopia: The Femtolasik Xtra technique may be an option for these cases.
Keratoconus: It can be used in patients with keratoconus, even with normal previous studies, or to make incisions for intracorneal rings.
Thin cornea: It may be a solution for patients with thin corneas who were not candidates for other techniques.
Cataract surgery: It has been incorporated as a technique to increase precision when making the incisions necessary for cataract removal and intraocular lens implantation.

Important

It is crucial to undergo a comprehensive ophthalmological examination to determine suitability for the procedure.
Prior evaluation is necessary to rule out eye diseases such as keratoconus or advanced glaucoma.

PresbiLASIK

The main indications for PresbyLASIK are for people with presbyopia (eyestrain), especially those who also have myopia, hyperopia or astigmatism and who wish to correct their distance and near vision in a single surgery. The procedure is recommended for those who experience difficulty reading or seeing nearby objects, and the typical age is between 50 and 55, although this depends on the assessment of an ophthalmologist.

Main indications

Presbyopia or eyestrain: This is the main indication, the difficulty in focusing on nearby objects that appears with age.
Combination with other refractive errors: Surgery can simultaneously correct presbyopia with other visual problems such as myopia, hyperopia or astigmatism.
Difficulty reading and seeing up close: Symptoms include blurred vision when performing close-up tasks, such as reading or using a computer, and eye strain.
Need for lighting: People who require more light to perform close-up activities are also good candidates.
Patients who do not want to wear glasses or contact lenses: Independence from reading glasses, bifocals or multifocal contact lenses is sought.
Patients who already use intraocular lenses: It can be performed on patients who have had cataract surgery with lenses that only provide distance vision, to restore near vision.

Features of the technique

Vision at multiple distances: The aim is for the patient to be able to see far, near and at intermediate distances without the need for glasses.
Advanced monovision or multifocal focus: This is achieved by customising the laser treatment, creating a subtle difference between both eyes to optimise vision at different distances.
Rapid recovery: Results are generally noticeable from the day after the procedure, although near vision may take a few more days to stabilise completely.

ReLEx SMILE

ReLEx SMILE is indicated for correcting myopia (up to -10 dioptres) and astigmatism (up to -5 dioptres) in adults with sufficient corneal thickness and stable refraction. It is ideal for active patients, especially athletes, and those seeking rapid recovery with a lower risk of complications, as it is a minimally invasive technique that does not require a flap.

Indications and selection criteria

Refractive error: Myopia (between -0.5 and -10 dioptres) and/or astigmatism (up to -5 dioptres).
Age: Over 18 years of age (some sources mention a minimum age of 18, while others suggest 21, so it is important to consult a professional).
Stability of prescription: The refractive error must be stable, with no significant changes in the last year.
Corneal thickness: Sufficient corneal thickness is necessary to perform the procedure.
Lifestyle: It is a good option for athletes, as the risk of complications from trauma is lower and the risk of complications is reduced.

Before surgery

Avoid contact lenses: Do not wear contact lenses in the days leading up to surgery, and in some cases, until the eye can be manipulated.
Hygiene: Maintain good eye hygiene, but do not apply cosmetics such as make-up around the eyes the day before the operation.
Avoid excesses: It is advisable not to drink alcohol or smoke in the days leading up to the operation and to reduce heavy meals.
Rest: It is important to get plenty of rest in the days leading up to the procedure.
Bring someone with you: It is advisable to bring someone with you on the day of the procedure.

After surgery

Rest: Rest and keep your eyes closed for the first few hours, and avoid straining your eyes.
Do not rub your eyes: Avoid rubbing your eyes to prevent damage. Avoid risky activities: Avoid contact sports during the first few weeks.
Eye hygiene: Avoid using make-up, creams or lotions around the eye during the first month.
Swimming and hot tubs: Avoid swimming, hot tubs and pools for 2 to 4 weeks.
Medical follow-up: Follow your doctor’s instructions and attend scheduled check-ups.

TransPRK

TransPRK (Photo-Refractive Keratectomy) is indicated for the treatment of myopia, hyperopia and astigmatism, and is particularly beneficial for patients with thin corneas or who play contact sports, as it does not create a corneal flap. Ideal candidates are over 21 years of age, with stable vision for at least two years and no significant previous eye conditions.

Ideal candidates

Patients with myopia, hyperopia and/or astigmatism.
People with thin corneas who are not suitable for LASIK.
Athletes or people with high-risk jobs who may suffer blows to the eyes.
Patients with prescriptions generally lower than seven dioptres, although there are exceptions, as Miranza explains on YouTube.

Exclusion criteria

Previous eye conditions or surgeries, such as previous refractive surgery, corneal transplant, glaucoma, cataracts, corneal ectasia, among others.
Patients under 21 years of age. Unstable vision during the last two years.

Additional considerations

It is a surface technique that removes the epithelium (surface layer of the cornea) and reshapes the stroma with a laser in a single step.
By not creating a flap, it reduces the risk of complications in active patients and decreases the risk of dry eye compared to LASIK.
The postoperative period may be more uncomfortable than with other techniques, with discomfort and blurred vision during the first few days, but visual recovery is gradual.