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The Changes of Corneal Higher-Order Aberrations after Surgery According to Pterygium Size

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ÇÑÇöö(Han Hyun-cheol) - ÀÎÁ¦´ëÇб³ Àǰú´ëÇÐ ÀÏ»ê¹éº´¿ø ¾È°úÇб³½Ç
±èÁøÇü(Kim Jin-Hyoung) - ÀÎÁ¦´ëÇб³ Àǰú´ëÇÐ ÀÏ»ê¹éº´¿ø ¾È°úÇб³½Ç
À̵µÇü(Lee Do-Hyung) - ÀÎÁ¦´ëÇб³ Àǰú´ëÇÐ ÀÏ»ê¹éº´¿ø ¾È°úÇб³½Ç

Abstract

¸ñÀû: ±º³¯°³ÀÇ Å©±â¿¡ µû¸¥ ¼ö¼ú Àü ÈÄ °¢¸· ³­½Ã¿Í °¢¸· °íÀ§¼öÂ÷ÀÇ º¯È­¸¦ ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù.

´ë»ó°ú ¹æ¹ý: 46¸í(50¾È)À» ´ë»óÀ¸·Î ±º³¯°³ÀÇ Å©±â°¡ ÀÛÀº ±º(2.0 mm ÀÌÇÏ)°ú Å« ±º(2.0 mm Ãʰú)À¸·Î ³ª´©¾î ¼ö¼ú Àü°ú ¼ö¼ú ÈÄ 1ÁÖ, 1°³¿ù, 3°³¿ù¿¡ °¢¸·ÁöÇüµµ(Orbscan II?)¿Í °íÀ§¼öÂ÷°è(KR?1W?)¸¦ ÃøÁ¤ÇÏ¿´´Ù.

°á°ú: ÀÛÀº ±ºÀº 14¸í(16¾È)À̾ú°í Å« ±ºÀº 32¸í(34¾È)À̾ú´Ù. ÀÛÀº ±º¿¡¼­´Â ¼ö¼ú Àü°ú ¼ö¼ú 3°³¿ù ÈÄ ³ª¾È½Ã·Â ¹× ±³Á¤½Ã·Â, ±¸¸é´ëÀÀ Ä¡, Sim K ³­½ÃÀÇ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾ÒÀ¸³ª Å« ±º¿¡¼­´Â ±³Á¤½Ã·ÂÀÇ º¯È­ ¾øÀÌ ³ª¾È½Ã·Â Áõ°¡¿Í ±¸¸é´ëÀÀÄ¡ ¹× Sim K ³­½ÃÀÇ °¨¼Ò¸¦ º¸¿´´Ù. ¼ö¼ú Àü Sim K ³­½Ã¿Í °¢¸· °íÀ§¼öÂ÷ °ªÀº Å©±â°¡ Áõ°¡ÇÒ¼ö·Ï À¯ÀÇÇÏ°Ô Áõ°¡ÇÏ´Â ¸ð½ÀÀ» º¸¿´°í, Å« ±ºÀÌ ÀÛÀº ±º¿¡ ºñÇØ °¢¸·Á᫐ 4 mm ±¸¿ª Ãѱ¸¸é¼öÂ÷(p=0.501)¸¦ Á¦¿ÜÇÑ ¸ðµç °íÀ§¼öÂ÷¿¡¼­ Åë°èÇÐÀûÀ¸·Î À¯ÀÇÇÏ°Ô Áõ°¡µÇ¾î ÀÖ¾ú´Ù(p£¼0.05). ¼ö¼ú Àü ÈÄÀÇ °¢¸·°íÀ§¼öÂ÷ °ªÀÇ º¯È­ ¶ÇÇÑ ±º³¯°³ÀÇ Å©±â°¡ ÀÛÀº ±º¿¡¼­´Â Åë°èÇÐÀûÀ¸·Î À¯ÀÇÇÑ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾ÒÀ¸³ª, Å« ±º¿¡¼­´Â ¼ö¼ú ÈÄ 1ÁÖ, 1°³¿ù, 3°³¿ù¿¡ °¢¸·Á᫐ 4 mm¿Í 6 mm ±¸¿ª¿¡¼­ÀÇ ÃѰíÀ§¼öÂ÷, ÃÑÄÚ¸¶¼öÂ÷, ÃÑÆ®·¹Æ÷ÀϼöÂ÷¿¡¼­ Åë°èÇÐÀûÀ¸·Î À¯ÀÇÇÑ °¨¼Ò ¸¦ º¸¿´´Ù(p£¼0.05).

°á·Ð: ±º³¯°³ÀÇ Å©±â°¡ Ŭ¼ö·Ï °¢¸· ³­½Ã ¹× °¢¸· °íÀ§¼öÂ÷´Â Áõ°¡Çϰí, 2.0 mm°¡ ÃʰúÇÏ´Â °æ¿ì, ¼ö¼ú ÈÄ ³ª¾È½Ã·Â ȸº¹°ú ½Ã·ÂÁú Çâ»ó¿¡ µµ¿òÀÌ µÉ Á¤µµ·Î À¯ÀÇÇÏ°Ô °¨¼ÒÇϹǷΠ±º³¯°³ÀÇ Å©±â°¡ ¼ö¼ú½Ã±â °áÁ¤ÀÇ À¯¿ëÇÑ ÁöÇ¥·Î ÀÌ¿ëµÉ ¼ö ÀÖÀ» °ÍÀÌ´Ù.
Purpose: To investigate the effects of pterygium size on the change of corneal astigmatism and corneal higher-order aberrations (HOAs) after surgery.

Methods: Fifty eyes of 46 patients who underwent pterygium surgery were included in the present study and divided into 2 groups according to pterygium size (small group: size ¡Â 2.0 mm, large group: size > 2.0 mm). Corneal HOAs using wavefront aberrometer (KR-1W?) and corneal astigmatism using topography (Orbscan II?) were evaluated before surgery and their changes monitored after surgery at postoperative 1 week, 1 month, and 3 months.

Results: The small group was comprised of 16 eyes and 34 eyes were included in the large group. In the small group, uncorrected visual acuity (UCVA), best corrected visual acuity (BVCA), and spherical equivalent (SE) were not statistically significantly different after surgery at postoperative 3 months. In the large group, BVCA was not statistically significantly different, but UCVA increase and SE decrease were statistically significant after surgery at postoperative 3 months. Preoperative simulated keratometric (Sim K) astigmatism and corneal HOAs increase were statistically significant according to the pterygium size. Preoperative corneal HOAs of the large group were significantly higher than the small group except for spherical aberration in the central 4 mm optical zone (p = 0.501). In the small group, there was no statistically significant difference in corneal HOAs before and after surgery. In the large group, corneal total HOAs, trefoil and coma in the central 4 mm and 6 mm zone were statistically significantly decreased at postoperative 1 week, 1 month, and 3 months, respectively (p < 0.05).

Conclusions: The corneal HOAs and the corneal astigmatism were increased according to pterygium size. In cases with pterygium greater than 2.0 mm in size, the corneal HOAs and the corneal astigmatism were decreased after pterygium surgery which can improve visual acuity and quality. Therefore, the pterygium size can be a useful factor in deciding when to perform pterygium surgery.

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Higher-Order Aberrations, Pterygium, Topography, Visual Acuity, Wavefront
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DOI
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ICD 03
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