³í¹®) Assessment of reliability and validity of the 5‑scale grading system of the point‑of‑care immunoassay for tear matrix metalloproteinase-9 Áß¾Ó´ëÇб³º´¿ø(º´¿øÀå ÀÌÇÑÁØ) ¾È°ú ±è°æ¿ì ±³¼ö(»çÁø ñ§), ±è¹ÎÁ¤ Àü°øÀÇ(éÓ) ¿¬±¸ÆÀ