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 ...

Types of Eye Exams Performed at an Optometry Clinic

 


Eye exams are essential for maintaining good vision and overall eye health. Regular eye check-ups help detect vision problems, eye diseases, and even systemic health conditions such as diabetes and high blood pressure. Optometrists and ophthalmologists use a variety of vision tests to assess different aspects of eye function. This article explores the different types of eye exams performed at an eye clinic and their significance.

1. Visual Acuity Test

The visual acuity test is the most common and basic eye examination, used to measure the sharpness of vision.

  • Procedure: Patients read letters or symbols from an eye chart (Snellen or LogMAR chart) at a standard distance (usually 20 feet or 6 meters).

  • Purpose: Determines if the patient has normal vision (20/20) or requires corrective lenses.

  • Common Findings:

    • Myopia (nearsightedness)

    • Hyperopia (farsightedness)

    • Astigmatism (irregular corneal shape causing blurred vision)

2. Refraction Test

A refraction test measures the exact prescription needed for glasses or contact lenses.

  • Procedure: The patient looks through a phoropter, and the optometrist switches lenses while asking which provides the clearest vision.

  • Purpose: Determines the most precise prescription for corrective eyewear.

  • Common Findings:

    • Refractive errors such as myopia, hyperopia, astigmatism, and presbyopia.

3. Keratometry and Corneal Topography

These tests measure the curvature of the cornea to diagnose corneal conditions and assess suitability for contact lenses or refractive surgery.

  • Procedure: A keratometer or corneal topographer scans the cornea’s surface and provides a detailed map.

  • Purpose: Detects corneal irregularities such as keratoconus and evaluates candidates for LASIK or SMILE surgery.

4. Tonometry (Intraocular Pressure Test)

Tonometry measures intraocular pressure (IOP) to assess the risk of glaucoma.

  • Procedure: There are different methods:

    • Applanation tonometry (Goldmann tonometry) involves applying a small amount of pressure to the cornea.

    • Non-contact tonometry (air puff test) uses a puff of air to flatten the cornea and measure IOP.

  • Purpose: Detects glaucoma, a disease that damages the optic nerve and can cause vision loss.

5. Slit-Lamp Examination (Biomicroscopy)

A slit-lamp exam provides a detailed view of the anterior and posterior segments of the eye.

  • Procedure:

    • The doctor uses a microscope with a bright light (slit lamp) to examine the cornea, lens, iris, and retina.

    • Dilating eye drops may be used to enlarge the pupils for a better view of the retina.

  • Purpose: Detects cataracts, corneal injuries, infections, and macular degeneration.

6. Retinal Examination (Fundoscopy or Ophthalmoscopy)

A retinal exam allows the doctor to inspect the retina, optic nerve, and blood vessels for abnormalities.

  • Procedure:

    • Direct ophthalmoscopy: A handheld ophthalmoscope is used to look directly into the eye.

    • Indirect ophthalmoscopy: A stronger light and a condensing lens provide a wider view of the retina.

    • Dilated eye exam: Special eye drops enlarge the pupils to improve visibility.

  • Purpose: Detects diabetic retinopathy, retinal detachment, optic nerve damage, and age-related macular degeneration (AMD).

7. Color Vision Testing

Color vision tests assess the ability to distinguish between different colors and identify color blindness.

  • Procedure: The most common test is the Ishihara Test, which uses a series of colored dot patterns with hidden numbers or shapes visible only to those with normal color vision.

  • Purpose: Identifies red-green color blindness or blue-yellow deficiencies.

8. Visual Field Test (Perimetry Test)

A visual field test measures peripheral (side) vision and detects blind spots.

  • Procedure:

    • The patient stares at a central point and presses a button when they see lights in their peripheral vision.

    • Automated perimetry (Humphrey Field Analyzer) is commonly used.

  • Purpose: Detects glaucoma, optic nerve damage, stroke-related vision loss, and retinal diseases.

9. Binocular Vision and Eye Movement Tests

These tests evaluate how both eyes work together.

  • Cover Test: Determines eye alignment and detects strabismus (crossed eyes) or amblyopia (lazy eye).

  • Ocular Motility Test: Assesses eye movement to detect nystagmus (uncontrolled eye movements) or nerve dysfunction.

  • Stereopsis Test: Uses 3D images to measure depth perception.

10. Optical Coherence Tomography (OCT)

OCT is an advanced imaging test that provides high-resolution cross-sectional images of the retina.

  • Procedure: A non-invasive laser scans the eye to create a detailed image of the retina’s layers.

  • Purpose: Diagnoses and monitors glaucoma, macular degeneration, diabetic retinopathy, and optic nerve diseases.

11. Wavefront Aberrometry

Wavefront aberrometry maps the way light passes through the eye to detect subtle optical imperfections.

  • Procedure: A device scans the eye using wavefront technology.

  • Purpose: Helps in customized LASIK surgery and detecting higher-order aberrations that affect vision quality.

Conclusion

Regular eye exams are vital for early detection of vision problems and eye diseases. By undergoing these tests, patients can ensure their eyes remain healthy and receive timely treatment if needed. If you experience vision changes, eye strain, or discomfort, schedule an eye exam with a qualified optometrist or ophthalmologist. Prioritizing eye health can help maintain clear vision and prevent long-term complications.

If you are considering vision correction surgery, your eye doctor will likely perform several of these tests to determine your eligibility and provide the best treatment plan for your needs.