안경 도수가 계속 올라가는 이유 (근시가 진행되는 진짜 원인)

 왜 안경 도수가 계속 올라갈까요?” 아이 안경을 맞춘 지 얼마 안 됐는데 👉 또 도수가 올라갔다면 많은 부모님들이 걱정하게 됩니다. 하지만 중요한 것은 👉 단순히 “나빠졌다”가 아니라 👉 왜 계속 나빠지는지 이해하는 것 입니다. 📌 근시는 왜 계속 진행될까? 근시는 👉 단순한 시력 문제가 아니라 👉 눈의 성장과 관련된 변화 입니다. 특히 성장기 아이는 👉 눈 길이(안축장)가 계속 길어지면서 👉 근시가 진행됩니다. 📌 1. 가장 큰 원인: 가까운 거리 작업 요즘 아이들은 👉 대부분 가까운 작업 시간이 많습니다. 스마트폰 태블릿 독서 공부 👉 가까운 거리를 오래 보면 👉 눈이 “가까운 환경에 적응”하게 됩니다. 그 결과 👉 근시 진행이 빨라질 수 있습니다 📌 2. 야외활동 부족 자연광은 👉 눈 성장 조절에 중요한 역할을 합니다. 하지만 실내 생활 증가 학원 중심 생활 👉 이로 인해 👉 근시 발생과 진행이 증가하고 있습니다. 👉 하루 2시간 이상의 야외활동이 👉 매우 중요합니다. 📌 3. 잘못된 생활습관 다음과 같은 습관은 👉 근시 진행을 빠르게 만들 수 있습니다. 책을 너무 가까이 보기 누워서 스마트폰 사용 어두운 환경에서 사용 장시간 휴식 없이 집중 👉 작은 습관이 👉 큰 차이를 만듭니다. 📌 4. 유전적 영향 부모가 근시인 경우 👉 아이도 근시일 확률이 높습니다. 하지만 👉 유전보다 환경 영향이 더 큽니다 👉 즉 👉 관리에 따라 충분히 조절 가능합니다. 📌 5. 근시 진행의 핵심 구조 👉 근시는 이렇게 진행됩니다 가까운 작업 증가 눈 길이 증가 초점이 앞으로 이동 시력 저하 안경 도수 증가 👉 이 과정이 반복됩니다. 📌 부모가 꼭 알아야 할 핵심 👉 안경 도수가 올라가는 것은 👉 단순 문제가 아닙니다 👉 근시가 진행되고 있다는 ...

Essential Examinations for LASIK and LASEK: A Complete Guide

 


Introduction

LASIK (Laser-Assisted in Situ Keratomileusis) and LASEK (Laser-Assisted Subepithelial Keratectomy) are two of the most popular laser eye surgeries for vision correction. However, not everyone is a suitable candidate for these procedures. Before undergoing surgery, patients must go through a comprehensive preoperative eye examination. This article explores the essential tests and evaluations performed before LASIK and LASEK to ensure the best possible outcome.

Why Preoperative Eye Examinations are Crucial

A detailed eye examination helps determine whether a patient is eligible for LASIK or LASEK. These tests assess the overall eye health, detect potential risks, and ensure that the cornea is suitable for laser correction. Proper screening minimizes complications and increases the chances of successful vision correction.

Essential Preoperative Examinations

1. Comprehensive Eye Exam

A complete eye examination is the first step in determining a patient’s eligibility. It includes:

  • Visual Acuity Test: Measures how well you can see at various distances.

  • Refraction Test: Determines the exact prescription needed for glasses or contact lenses.

  • Slit-Lamp Examination: Examines the front structures of the eye, including the cornea, iris, and lens, to detect any abnormalities.

2. Corneal Thickness Measurement (Pachymetry)

Since both LASIK and LASEK involve reshaping the cornea, measuring corneal thickness is crucial. A thin cornea may not be able to withstand LASIK, making LASEK or an alternative procedure a better choice.

3. Corneal Topography and Tomography

  • Corneal Topography: Maps the shape and curvature of the cornea, identifying irregularities such as astigmatism or keratoconus (a progressive corneal disease that disqualifies a patient from LASIK).

  • Corneal Tomography: Provides a 3D image of the cornea to assess its depth and detect hidden abnormalities.

4. Tear Film Evaluation (Dry Eye Test)

Dry eye syndrome can affect post-surgical healing and visual outcomes. Tests such as the Schirmer’s test and tear breakup time (TBUT) help evaluate tear production and stability.

5. Pupil Size Measurement

A large pupil can increase the risk of night vision issues, such as glare and halos, after surgery. Measuring pupil size in dim light helps surgeons plan the procedure accordingly.

6. Wavefront Aberration Testing

This advanced test assesses higher-order aberrations (HOAs), which can contribute to visual distortions. Custom LASIK uses this data to provide more precise corrections.

7. Intraocular Pressure (IOP) Measurement

Elevated intraocular pressure (IOP) can indicate glaucoma, which may affect surgical eligibility. Tonometry is used to measure IOP and ensure eye health before surgery.

8. Retinal Examination

A dilated eye exam checks for retinal conditions such as diabetic retinopathy or retinal detachment, which can impact surgical success.

9. Cycloplegic Refraction

By temporarily paralyzing the focusing muscles, this test helps determine the true refractive error, especially in younger patients who may have accommodative spasm.

10. Keratometry

This test measures corneal curvature, which helps confirm astigmatism levels and determine the best surgical approach.

Differences in Preoperative Examinations for LASIK vs. LASEK

While most of the preoperative tests are similar, there are some key differences:

  • Corneal Thickness Requirement: LASIK requires a thicker cornea because it involves creating a flap, while LASEK is suitable for thinner corneas since it preserves more corneal tissue.

  • Healing Considerations: Patients with dry eyes or certain corneal irregularities may be better suited for LASEK, which has a longer healing time but poses fewer risks related to corneal flaps.

What Happens After the Examination?

Once all tests are completed, the ophthalmologist will:

  1. Analyze the results and determine if the patient is a suitable candidate for LASIK or LASEK.

  2. Discuss the risks, benefits, and alternative treatment options.

  3. Provide preoperative instructions, such as discontinuing contact lens use before surgery.

Conclusion

A thorough preoperative examination is essential for a safe and successful LASIK or LASEK procedure. By evaluating corneal health, eye pressure, tear production, and other critical factors, ophthalmologists can ensure that patients receive the best vision correction treatment for their specific needs. If you're considering laser eye surgery, consult an experienced eye specialist for a comprehensive evaluation.