မျက်လုံး ကျန်းမာရေး : #Lenticule

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What Is Thin Cornea? Causes, Symptoms, and Eye Care Tips

A thin cornea refers to a condition where the cornea—the clear, dome-shaped front layer of the eye—has a thickness lower than normal, which can affect vision and overall eye health. This condition may result from various causes such as natural aging, frequent eye rubbing, genetic disorders, or side effects from eye surgeries like LASIK. Common symptoms include blurry vision, frequent changes in prescription, distorted images, and unusually high astigmatism.   Understanding the Cornea The cornea is the transparent, curved layer covering the front part of the eye. It helps focus light into the eye for clear vision and serves as a protective barrier against dust and germs. Normally, corneal thickness ranges between 520–550 microns, but it may thin with age.   What Is a Thin Cornea? A thin cornea is typically defined as a corneal thickness of less than 500 microns (0.5 mm). It is not necessarily a disease and often requires no treatment. However, thin corneas can affect certain diagnoses—such as glaucoma—since intraocular pressure readings may appear lower than actual values. Corneal thickness also plays an important role in refractive surgery decisions. For example, patients with thin corneas and high refractive errors (nearsightedness or astigmatism) may not be ideal candidates for LASIK, as the remaining corneal tissue after surgery might be too thin. This could increase the risk of complications like keratoconus or corneal ectasia. In such cases, ophthalmologists may recommend alternative procedures such as PRK, ICL, FemtoLASIK, ReLEx SMILE Pro, or NanoLASIK, which preserve more corneal tissue. Therefore, detailed corneal thickness assessment is essential before undergoing LASIK to ensure safe and effective outcomes.   Does Wearing Contact Lenses Cause Thinning of the Cornea? Generally, wearing contact lenses correctly does not thin the cornea. However, prolonged use without proper cleaning or rest may lead to oxygen deprivation or corneal infections, which can gradually weaken or thin corneal tissue.   Causes of Thin Cornea There are several factors that can lead to corneal thinning: 1. Genetic Conditions Keratoconus: The most common cause, where the cornea gradually thins and bulges outward into a cone shape, leading to irregular astigmatism and blurred vision. It usually appears during the teenage years to early adulthood. Corneal Dystrophies: Such as Pellucid Marginal Degeneration (PMD), where thinning occurs in the lower peripheral cornea. 2. Eye Surgery or Injury Procedures like LASIK or PRK can thin the cornea, especially if excessive corneal tissue is removed. Repeated eye injuries or untreated infections (e.g., corneal ulcers, keratitis) can also cause thinning due to tissue damage. 3. Systemic Diseases and Medication Autoimmune diseases such as Rheumatoid Arthritis or SLE can cause chronic inflammation, leading to corneal thinning.Long-term use of steroid eye drops may also weaken corneal tissue over time.   Symptoms of Thin Cornea Corneal thinning often progresses slowly and may not show early signs. Key symptoms include: Blurry or distorted vision Frequent changes in prescription High or irregular astigmatism Difficulty focusing or double vision   Diagnosis Thin cornea is often detected during pre-LASIK evaluations.Eye doctors use devices like: Keratometer: Measures corneal curvature and astigmatism. Corneal Topography: Creates a detailed map of corneal thickness and shape. Tomographic Biomechanical Index (TBI): Evaluates corneal strength and risk of ectasia. While early symptoms can hint at the condition, only a comprehensive eye exam by an ophthalmologist can confirm it.   Summary Thin cornea is a silent condition that can significantly impact vision if left untreated. Early detection—especially before refractive surgery—is crucial.At Bangkok Eye Hospital, advanced diagnostic tools and experienced specialists ensure accurate corneal thickness evaluation and personalized treatment planning to maintain long-term eye health.     FAQ: Frequently Asked Questions About Thin Cornea 1. Can corneal thickness be increased?No, corneal thickness cannot naturally increase as it is determined by the cornea’s internal structure. 2. What happens if thin cornea is left untreated?It may lead to worsening blurred vision, irregular astigmatism, or even corneal ectasia. In severe cases, acute hydrops or corneal perforation may occur, leading to permanent vision loss if untreated. 3. Can thin cornea be prevented?Yes — by avoiding vigorous eye rubbing, maintaining good eye hygiene, limiting contact lens wear time, and having regular eye checkups, especially if there is a family history of corneal diseases.
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Laser Vision LASIK Center

Achieving Crystal-Clear Vision: A Deep Dive into NanoRelex & NanoLASIK Procedures

Achieving Crystal-Clear Vision: A Deep Dive into NanoRelex & NanoLASIK Procedures At Laser Vision, we introduce cutting-edge LASIK technologies - NanoRelex & NanoLASIK. These technologies, originating from Switzerland, utilize low-energy lasers at every stage of the LASIK process. Our goal is to make LASIK procedures as convenient and efficient as possible for our patients.   The NanoRelex Procedure Before undergoing LASIK surgery, our patients receive preoperative medications, including an anesthetic eye drop to ensure comfort during the procedure. Upon entering the surgical suite, our skilled surgeons start by meticulously cleansing the area around the eye. Subsequently, they gently employ a specialized instrument to keep the eye open, which may result in a slight pressure sensation. Inside, patients will witness the precise laser light used in the surgery. The NanoRelex procedure commences with the employment of the Femtosecond Laser. This advanced technology expertly reshapes the cornea's curvature and thickness, aligning it with the patient's refractive error. The corneal tissue is meticulously adjusted, forming a lenticule customized to the patient's unique requirements. The incision created is minimal, approximately 2 millimeters in size. The customized lenticule is then removed through this incision. This step is remarkably swift, taking only about 5 seconds for each eye. Following this, our medical team administers antibiotics, anti-inflammatory medication, and artificial tears. Additionally, we provide a protective eye shield to prevent any accidental eye contact. This marks the completion of the surgical procedure, with a follow-up appointment scheduled for the next day to evaluate patient recovery progress.   The NanoLASIK Procedure Prior to undergoing LASIK surgery, our patients receive preoperative medications, including an anesthetic eye drop for added comfort. Within the surgical suite, our surgeons initiate the procedure by meticulously cleansing the eye area. An instrument is gently employed to keep the eye open during the procedure, which may result in a minor pressure sensation. Inside, the laser light used for the surgery is visible to the patient. The NanoLASIK procedure involves the use of the Femtosecond Laser to create a corneal flap, subsequently lifted. The Excimer Laser is then utilized to reshape the cornea, addressing the patient's refractive error. This phase of the procedure is brief, taking only 1-2 seconds for each eye. Once the reshaping is complete, the corneal flap is carefully laid back in place. Patients typically wait for approximately 3 minutes to allow the cornea to naturally reattach. Antibiotics, anti-inflammatory medication, and artificial tears are then administered. We also provide an eye shield to prevent inadvertent eye contact. The surgical procedure is complete, with a follow-up appointment scheduled for the next day to monitor patient progress. After the surgery, some patients may experience tearing or a sensation akin to having sand in the eyes. These symptoms are temporary and typically resolve within 4-6 hours post-surgery. Encouraging patients to rest and avoid eye strain will expedite the healing process of the surgical incision. Online appointments and consultations regarding LASIK are available for your convenience. For further inquiries or to schedule your LASIK procedure, please don't hesitate to contact us.
Laser Vision LASIK Center

NanoRelex: The Latest Breakthrough in LASIK Technology with AI Precision"

NanoRelex: The Latest Breakthrough in LASIK Technology with AI Precision" Are you considering vision correction options for yourself or a loved one? Don't miss out on NanoRelex, the cutting-edge LASIK technology hailing from Switzerland, now enhanced with Artificial Intelligence (AI) for exceptional results.   What Is NanoRelex?   Let's begin by exploring the realm of LASIK procedures. LASIK, short for Laser In-Situ Keratomileusis, is a proven vision correction technique that employs laser technology to restore clear vision for individuals with nearsightedness, farsightedness, or astigmatism. With over two decades of history, LASIK has evolved, yet the traditional approach involves a microkeratome blade for corneal flap creation, followed by corneal reshaping using a laser. Post-surgery, it's common to visualize patients wearing eye shields for several days.   FemtoLASIK is a more advanced option that replaces the blade with a femtosecond laser to create the corneal flap and excimer laser reshaping, delivering precise results and rapid recovery. Patients can bid farewell to eye shields in as little as one night. Another option, ReLEx SMILE, builds upon FemtoLASIK by employing Femtosecond Laser technology to create 3D lenticules within the cornea. These lenticules are extracted through small incisions (2-4mm) without the use of an Excimer Laser, significantly reducing recovery time.   The Next Frontier: NanoRelex The term "the latest" is about to take on a new meaning as Laser Vision introduces the most recent Swiss innovation: NanoRelex. This technology leverages the power of Artificial Intelligence, utilizing minimal nanojoules of energy for the procedure. Patients experience minimal discomfort during surgery, and an advanced eye-tracking system ensures unparalleled precision. With super small corneal layer opening and closing processes, the surgery time is significantly reduced. Furthermore, post-surgery discomfort is minimal, and the small corneal incision (2-3mm) heals within 24 hours. It's a game-changer, offering not only superior results but also time-saving benefits.        
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