Publications by authors named "Gregory Parkhurst"

Purpose: To evaluate the safety and effectiveness of thermo-mechanical action (Tixel C, Novoxel) compared with thermal pulsation (LipiFlow, Johnson & Johnson) in meibomian gland dysfunction (MGD).

Setting: Private clinics and University clinic, USA.

Design: Prospective, randomized (1:1), evaluator-masked, multicenter study.

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Purpose: To develop an accurate deep learning model to predict postoperative vault of phakic implantable collamer lenses (ICLs).

Setting: Parkhurst NuVision LASIK Eye Surgery, San Antonio, Texas.

Design: Retrospective machine learning study.

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Purpose: We evaluate visual outcomes in patients with EVO/EVO+™ (posterior chamber phakic intraocular lens with a central port) within approved United States (US) age and refractive range indications.

Patients And Methods: This single-center retrospective study evaluated one-month, single-center postoperative data for 225 eyes meeting inclusion criteria and undergoing EVO/EVO+ implantation from April to October 2022. Data included lens size (mm), lens power (diopters of spherical and cylindrical power), preoperative best corrected visual acuity, preoperative spherical equivalent from manifest refraction, achieved postoperative uncorrected visual acuity, postoperative refraction, intraocular pressure (mmHg), and adverse events.

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Purpose: To evaluate the safety and efficacy of a sustained-release intracanalicular dexamethasone insert for postoperative inflammation and pain implanted in a clinical setting preoperatively or on postoperative day 1.

Methods: Single-site, retrospective, contralateral eye study of patients undergoing cataract surgery. Included were subjects with a dexamethasone intracanalicular insert implanted in the clinic immediately prior to surgery in one eye (same-day) and on postoperative day 1 (POD1) in the contralateral eye.

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Dry eye disease (DED) is a common disease that can reduce the quality of life. Prevalence estimates vary but have been reported to be as high as 60% in some populations. Diagnosis is complicated by a multifactorial etiology and a disconnection between clinical signs and patient-reported symptomatology.

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Article Synopsis
  • The study aimed to compare night vision and low-luminance contrast sensitivity in military patients receiving either phakic collamer lenses (ICL) or LASIK surgery.
  • A total of 48 military personnel participated, with results showing both procedures improved visual acuity and contrast sensitivity under low light conditions, especially with night vision goggles.
  • The ICL group experienced significantly greater improvements in contrast sensitivity and low-luminance visual acuity compared to the LASIK group, which may have important implications for military and civilian vision correction satisfaction.
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Purpose: To report 1-year safety and efficacy clinical outcomes of a shape-changing corneal inlay for the treatment of presbyopia.

Design: Prospective, nonrandomized, multicenter United States Food and Drug Administration Investigational Device Exemption clinical trial (clinicaltrials.gov identifier, NCT01373580).

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Purpose: To determine the prevalence of laser corneal refractive surgery (laser vision correction [LVC]) among ophthalmologists who perform these procedures and to assess the willingness of these ophthalmologists to recommend LVC to immediate family members.

Setting: Online survey with results analyzed at Surgivision Consultants, Inc., Scottsdale, Arizona, USA.

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Purpose: To describe two cases of successful femtosecond laser-assisted cataract surgery in patients with a transparent hydrogel corneal inlay (Raindrop Near Vision Inlay; ReVision Optics, Inc., Lake Forest, CA).

Methods: Case report.

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Purpose: To assess short-term clinical outcomes after implantation of phakic intraocular lenses (Visian ICL, STAAR Surgical Co) in US military warfighters who are not good candidates for laser vision correction.

Methods: A retrospective interventional consecutive case series analysis of all eyes that underwent ICL surgery during a 14-month time period was performed. Main outcome measures included indications for surgery, efficacy, predictability, and early adverse events.

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