{
  "abstract": "Purpose To evaluate postoperative changes in corneal topographic parameters and higher-order aberrations (HOAs) following Müller muscle-conjunctival resection (MMCR) in patients with mild-to-moderate ptosis.Methods This prospective clinical study included patients who underwent MMCR after a positive phenylephrine test and with good levator function who were evaluated. Preoperative and postoperative best-corrected visual acuity (BCVA), margin reflex distance 1 and corneal parameters (flat meridian, steep meridian, simulated keratometry, maximum keratometry), along with HOAs including coma, trefoil, spherical aberration, secondary astigmatism and quadrifoil, were assessed at week 1, month 1 and month 3.Results A total of 50 eyes from 50 patients were included in the study. BCVA showed mild deterioration at week 1 but returned to baseline by month 3. At postoperative week 1, lagophthalmos was observed in 12% and superficial punctate keratopathy (SPK) in 14% of eyes; both resolved completely by month 1. Eyes with SPK showed significantly greater changes in trefoil compared with those without (p=0.01 and p=0.03 for 4 mm and 6 mm pupil diameters, respectively). A significant difference was found between preoperative and postoperative coma (p=0.04) and secondary astigmatism (p=0.03) values; however, these parameters returned to baseline levels by the third month postoperatively. Surgical success was achieved in 92% of cases. Undercorrection was seen in 6% and overcorrection in 2%, with no functional or cosmetic issues.Conclusion MMCR may cause corneal topographic changes during the early postoperative period. However, these changes appear transient, and MMCR remains a visually safe and refractively stable surgical option for suitable ptosis patients.",
  "authors": [
    {
      "affiliations": [
        "Department of Ophthalmology, Ministry of Health Dogubayazit Dr Yasar Eryilmaz State Hospital, Agri, Agri, Turkey"
      ],
      "name": "Metehan Simsek"
    },
    {
      "affiliations": [
        "Ministry of Health Istanbul Beyoglu Eye Training and Research Hospital, Istanbul, İstanbul, Turkey"
      ],
      "name": "Ilker Hosver"
    },
    {
      "affiliations": [
        "Ministry of Health Istanbul Beyoglu Eye Training and Research Hospital, Istanbul, İstanbul, Turkey"
      ],
      "name": "Mehmet Goksel Ulas"
    },
    {
      "affiliations": [
        "Ministry of Health Istanbul Beyoglu Eye Training and Research Hospital, Istanbul, İstanbul, Turkey"
      ],
      "name": "Ayse Cetin Efe"
    },
    {
      "affiliations": [
        "Ministry of Health Istanbul Beyoglu Eye Training and Research Hospital, Istanbul, İstanbul, Turkey"
      ],
      "name": "Fatma Poslu Karademir"
    },
    {
      "affiliations": [
        "Ministry of Health Istanbul Beyoglu Eye Training and Research Hospital, Istanbul, İstanbul, Turkey"
      ],
      "name": "Selvihan Sagdic Ozcelik"
    },
    {
      "affiliations": [
        "Ministry of Health Istanbul Beyoglu Eye Training and Research Hospital, Istanbul, İstanbul, Turkey"
      ],
      "name": "Ismail Diri"
    },
    {
      "affiliations": [
        "Ministry of Health Istanbul Beyoglu Eye Training and Research Hospital, Istanbul, İstanbul, Turkey"
      ],
      "name": "Muhittin Taskapili"
    }
  ],
  "title": "Refractive changes and higher-order aberrations after Müller muscle conjunctival resection: a prospective clinical study",
  "uid": "cb2ccd68-0d8f-58f4-903e-47f5436b66c6"
}