Eye drops may banish night glare after laser eye surgery

NCT ID NCT06349759

First seen Nov 01, 2025 · Last updated May 16, 2026 · Updated 29 times

Summary

This study tested an eye drop called phentolamine (POS) in 200 adults who had trouble seeing in dim light after LASIK or similar eye surgery. The goal was to see if the drops could improve low-light vision and reduce glare, halos, or starbursts. Participants used the drops for 15 days and had their vision tested.

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Contacts and locations

Locations

  • United States

    Bakersfield, California, 93309, United States

  • United States

    Tampa, Florida, 33603, United States

  • United States

    New York, New York, 10022, United States

  • United States

    Fargo, North Dakota, 58103, United States

  • United States Chattanooga

    Chattanooga, Tennessee, 37411, United States

  • United States Draper

    Draper, Utah, 84020, United States

  • United States Fargo

    Fargo, North Dakota, 58103, United States

  • United States Fraser

    Fraser, Michigan, 48026, United States

  • United States Jacksonville

    Jacksonville, Florida, 32257, United States

  • United States Louisville

    Louisville, Kentucky, 40206, United States

  • United States Lynchburg

    Lynchburg, Virginia, 24502, United States

  • United States Overland Park

    Overland Park, Kansas, 66210, United States

  • United States Phoenix

    Pheonix, Arizona, 85003, United States

  • United States Rowland Heights

    Rowland Heights, California, 91748, United States

  • United States Scottsdale

    Scottsdale, Arizona, 85260, United States

  • United States Smithtown

    Smithtown, New York, 11787, United States

  • United States Smyrna

    Smyrna, Tennessee, 37167, United States

  • United States Torrance

    Torrance, California, 90505, United States

  • United States, California

    Newport Beach, California, 92663, United States

  • United States, Glendale, CA

    Glendale, California, 91204, United States

  • United States, Jacksonville, FL

    Jacksonville, Florida, 32256, United States

  • United States, LaJolla, CA

    La Jolla, California, 92903, United States

  • United States, Mt Pleasant, SC

    Mt. Pleasant, South Carolina, 29464, United States

  • United States, North Carolina

    Garner, North Carolina, 27529, United States

  • United States, Rhode Island

    Warwick, Rhode Island, 02888, United States

Conditions

Explore the condition pages connected to this study.