Advances in Skin, Wound and Tissue Repair
Advances in Skin, Wound and Tissue Repair
ASWTR
Medical Sciences
http://icml.ir
105
journal105
1735-3319
10.61882/aswtr
en
jalali
1401
4
1
gregorian
2022
7
1
18
4
online
1
fulltext
fa
یک مدل اپتیکی سه بعدی برای توصیف عملکرد اپتیکی چشم مبتلا به قوز قرنیه
A three-dimensional optical model to describe the optical function
of the keratoconus eye
عمومى
General
پژوهشي
Research
<div style="text-align: justify;"><span style="line-height:2;"><span style="font-family:Tahoma;"><span style="font-size:14px;"><span style="direction:rtl"><span style="unicode-bidi:embed"><b><span lang="AR-SA"><span style="color:#c00000">هدف:</span></span></b> <span lang="AR-SA">قوز</span> <span lang="AR-SA">قرنیه</span> <span lang="AR-SA">یک</span> <span lang="AR-SA">نوع</span> <span lang="AR-SA">تخریب</span> <span lang="AR-SA">پیشرونده</span> <span lang="AR-SA">قرنیه</span> <span lang="AR-SA">بدون</span> <span lang="AR-SA">التهاب</span> <span lang="AR-SA">است</span> <span lang="AR-SA">که</span> <span lang="AR-SA">در</span> <span lang="AR-SA">آن</span> <span lang="AR-SA">قرنیه</span> <span lang="AR-SA">نازک</span> <span lang="AR-SA">و</span> <span lang="AR-SA">در</span> <span lang="AR-SA">نهایت</span> <span lang="AR-SA">بیرونزده</span> <span lang="AR-SA">و</span> <span lang="AR-SA">شکلی</span> <span lang="AR-SA">مخروطی</span> <span lang="AR-SA">به</span> <span lang="AR-SA">خود</span> <span lang="AR-SA">میگیرد.</span> <span lang="AR-SA">قوز</span> <span lang="AR-SA">قرنیه</span> <span lang="AR-SA">باعث</span> <span lang="AR-SA">آستیگماتیسم</span> <span lang="AR-SA">نامنظمشده</span> <span lang="AR-SA">و</span> <span lang="AR-SA">کیفیت</span> <span lang="AR-SA">بینایی</span> <span lang="AR-SA">را</span> <span lang="AR-SA">تحت</span> <span lang="AR-SA">تأثیر</span> <span lang="AR-SA">قرار</span> <span lang="AR-SA">میدهد.</span> <span lang="AR-SA">هدف</span> <span lang="FA">اصلی</span> <span lang="AR-SA">این</span> <span lang="AR-SA">پژوهش</span> <span lang="AR-SA">مدل</span><span lang="AR-SA"></span><span lang="AR-SA">کردن</span> <span lang="AR-SA">کارکرد</span> <span lang="AR-SA">اپتیکی</span> <span lang="AR-SA">چشم</span> <span lang="AR-SA">بیمار</span> <span lang="AR-SA">با</span> <span lang="AR-SA">استفاده</span> <span lang="AR-SA">از</span> <span lang="AR-SA">دادههای</span> <span lang="AR-SA">توپوگرافی</span> <span lang="AR-SA">قرنیه</span> <span lang="AR-SA">است.<span style="font-family:IRlotus"></span></span></span></span><br>
<span style="direction:rtl"><span style="unicode-bidi:embed"><b><span lang="AR-SA"><span style="color:#c00000">روش و بررسی:</span></span></b> <span lang="AR-SA">با استفاده از دادههای توپوگرافی کلینیکی قرنیه، شامل شعاع انحنا و ارتفاع، یک مدل سه بعدی براساس روش تعقیب پرتو و قانون اسنِل برای بررسی عملکرد اپتیکی چشم مبتلا به قوز قرنیه قبل و بعد از عمل کاشت رینگ توسعهدادهشد. برای محاسبه ابیراهیهای مختلف از روش بسط برحسب چندجملهایهای زرنیک استفاده شد. علاوهبراین، برای اعتبارسنجی مدل از نقشههای کلینیکی ابیراهی بیمار استفاده شد.</span></span></span><br>
<span style="direction:rtl"><span style="unicode-bidi:embed"><b><span lang="AR-SA"><span style="color:#c00000">یافتهها:</span></span></b><span lang="AR-SA"> با تابش یک جبهه موج تخت به چشم بیمار، </span><span lang="FA">خطای </span><span lang="AR-SA">جبهه موج و همچنین دیاگرام لکه روی شبکیه بازسازی شد</span><span lang="FA">ند</span><span lang="AR-SA">. دیاگرام لکه روی شبکیه نشان داد که در این شرایط ابیراهیهای مرتبه بالاتر نیز ظاهر میشوند. با استفاده از ضرایب زرنیک مقدار ابیراهیهای مختلف بررسی شد. نتایج مربوط به ابیراهی کلی چشم تطابق خوبی با دادههای کلینیکی داشتند.</span></span></span><br>
<span style="direction:rtl"><span style="unicode-bidi:embed"><b><span lang="AR-SA"><span style="color:#c00000">نتیجهگیری:</span></span></b><span lang="AR-SA"> مدل 3 بعدی پیشنهادشده اختلاف مسیر اپتیکی برای هر پرتو، خطای جبهه موج و انواع نقشههای ابیراهی چشم را محاسبه میکند. با استفاده از این مدل و روشهای پیشبینی توپوگرافی قرنیه بعد از عمل کاشت رینگ میتوان پزشکان را در انتخاب رینگ مناسب قبل از عمل کمک کرد.</span></span></span><br>
</span></span></span></div>
<span style="font-size:11pt"><span style="line-height:normal"><span style="font-family:Calibri,sans-serif"><b><i><span style="font-family:"Times New Roman",serif"><span style="color:red">Object:</span></span></i></b><span style="font-family:"Times New Roman",serif"> Keratoconus (KC) is a noninflammatory progressive corneal degeneration in which the cornea becomes thinner and eventually protrudes and assumes a cone-like shape. The corneal protrusion causes irregular astigmatism, affecting visual quality.</span> <span style="font-family:"Times New Roman",serif">Modeling the optical function of the keratoconus eye is the main object of this study.</span></span></span></span><br>
<span style="font-size:11pt"><span style="line-height:normal"><span style="font-family:Calibri,sans-serif"><b><i><span style="font-family:"Times New Roman",serif"><span style="color:red">Materials and Methods:</span></span></i></b><span style="font-family:"Times New Roman",serif"> Using the clinical corneal topographic data, including radius of curvature and elevation, a three-dimensional model, based on the ray tracing method and Snell's law was developed, to evaluate the optical function of the keratoconus eye before and after implantation. Also, to calculate the aberrations of eye, the expansion method in terms of Zernike polynomials was used. In addition, patient clinical aberration maps were used to validate the model.</span></span></span></span><br>
<span style="font-size:11pt"><span style="line-height:normal"><span style="font-family:Calibri,sans-serif"><b><i><span style="font-family:"Times New Roman",serif"><span style="color:red">Results:</span></span></i></b><span style="font-family:"Times New Roman",serif"> By radiating a plane wave to the patient's eye, the wavefront as well as the spot diagram on the retina were reconstructed. The retina spot diagram showed that higher order aberrations also appear under these conditions. Using Zernike coefficients, the amount of different aberrations of eye was investigated. The results of general ocular aberration were in good agreement with clinical data.</span></span></span></span><br>
<span style="font-size:11pt"><span style="line-height:normal"><span style="font-family:Calibri,sans-serif"><b><i><span style="font-family:"Times New Roman",serif"><span style="color:red">Conclusion:</span></span></i></b> <span style="font-family:"Times New Roman",serif">The</span> <span style="font-family:"Times New Roman",serif">proposed</span> <span style="font-family:"Times New Roman",serif">model</span> <span style="font-family:"Times New Roman",serif">calculates</span> <span style="font-family:"Times New Roman",serif">the</span> <span style="font-family:"Times New Roman",serif">optical</span> <span style="font-family:"Times New Roman",serif">path</span> <span style="font-family:"Times New Roman",serif">difference</span> <span style="font-family:"Times New Roman",serif">for</span> <span style="font-family:"Times New Roman",serif">each</span> <span style="font-family:"Times New Roman",serif">ray,</span> <span style="font-family:"Times New Roman",serif">the</span> <span style="font-family:"Times New Roman",serif">wavefront</span> <span style="font-family:"Times New Roman",serif">error,</span> <span style="font-family:"Times New Roman",serif">and</span> <span style="font-family:"Times New Roman",serif">the</span> <span style="font-family:"Times New Roman",serif">various</span> <span style="font-family:"Times New Roman",serif">types</span> <span style="font-family:"Times New Roman",serif">of</span> <span style="font-family:"Times New Roman",serif">eye’s</span> <span style="font-family:"Times New Roman",serif">aberration</span> <span style="font-family:"Times New Roman",serif">maps.</span> <span style="font-family:"Times New Roman",serif">Using</span> <span style="font-family:"Times New Roman",serif">this</span> <span style="font-family:"Times New Roman",serif">model</span> <span style="font-family:"Times New Roman",serif">and</span> <span style="font-family:"Times New Roman",serif">methods</span> <span style="font-family:"Times New Roman",serif">for</span> <span style="font-family:"Times New Roman",serif">predicting</span> <span style="font-family:"Times New Roman",serif">corneal</span> <span style="font-family:"Times New Roman",serif">topography</span> <span style="font-family:"Times New Roman",serif">after</span> <span style="font-family:"Times New Roman",serif">ring</span> <span style="font-family:"Times New Roman",serif">implantation,</span> <span style="font-family:"Times New Roman",serif">physicians</span> <span style="font-family:"Times New Roman",serif">can</span> <span style="font-family:"Times New Roman",serif">be</span> <span style="font-family:"Times New Roman",serif">assisted</span> <span style="font-family:"Times New Roman",serif">in</span> <span style="font-family:"Times New Roman",serif">selecting</span> <span style="font-family:"Times New Roman",serif">the</span> <span style="font-family:"Times New Roman",serif">appropriate</span> <span style="font-family:"Times New Roman",serif">ring</span> <span style="font-family:"Times New Roman",serif">before</span> <span style="font-family:"Times New Roman",serif">surgery.</span></span></span></span><br>
قوز قرنیه, توپوگرافی قرنیه, روش تعقیب پرتو, خطای جبهه موج, ابیراهی.
Keratoconus, Corneal topography, Ray tracing method, Wavefront error, Aberration.
9
18
http://icml.ir/browse.php?a_code=A-10-151-132&slc_lang=fa&sid=1
Pantea
Jalili
پانتهآ
جلیلی
pantea.jalili@gmail.com
1050031947532846005004
1050031947532846005004
No
Biomedical Engineering (Bioelectric), Medical Sciences and Technologies, Science and Research Branch, Islamic Azad University
مهندسی پزشکی (بیوالکتریک)، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، دانشکده علوم و فناوریهای پزشکی، گروه مهندسی پزشکی، تهران، ایران،
Keyvan
Maghouli
کیوان
معقولی
k_maghooli@srbiau.ac.ir
1050031947532846005005
1050031947532846005005
Yes
Biomedical Engineering (Bioelectric), Faculty of Medical Sciences and Technologies, Science and Research Branch, Islamic Azad University, Tehran, Iran
مهندسی پزشکی (بیوالکتریک)، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، دانشکده علوم و فناوریهای پزشکی، گروه مهندسی پزشکی، تهران، ایران،
Khosrow
Jadidi
خسرو
جدیدی
Kh.jadidi@semums.ac.ir
1050031947532846005006
1050031947532846005006
No
Fellowship of Cornea and External Eye Diseases, Cornea Sub-Specialist, Professor, Vision Health Research Center, Semnan University of Medical Sciences, Semnan, Iran
فلوشیپ بیماریهای قرنیه و خارج چشمی، فوقتخصص قرنیه، استاد، دانشگاه علوم پزشکی سمنان، مرکز تحقیقات سلامت بینایی، سمنان، ایران،