Publications by authors named "Reinprayoon Usanee"

We assessed the efficacy of deep anterior lamellar keratoplasty (DALK) and penetrating (PK) for macular corneal dystrophy (MCD) We searched on 4 databases for articles published up to the end of April, 2024. The study's outcome was postoperative visual acuity and other factors that may affect visual outcomes (e.g.

View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to create an AI system to differentiate between normal corneas, subclinical conditions, and keratoconus using data from Pentacam and Corvis ST imaging technologies.
  • A total of 1,668 tomographic and 611 biomechanical images from various patients were analyzed, employing different convolutional neural network models to improve detection accuracy.
  • The best-performing AI model achieved a high accuracy rate (AUC of 0.991) for distinguishing corneal conditions, showing potential for enhanced diagnosis and treatment decisions in clinical practice.
View Article and Find Full Text PDF

Objective: Microsporidial stromal keratitis (MSK) is an uncommon disease. Only several case series have been reported. We aimed to describe the clinical manifestations, histopathology and treatment outcomes of MSK.

View Article and Find Full Text PDF

Background: To assess the efficacy of curcuminoids (curcumin, demethoxycurcumin, bisdemethoxycurcumin [BDC]) and their analogs (tetrahydrocurcumin [THC], tetrahydrodemethoxycurcumin [THDC], tetrahydrobisdemethoxycurcumin) in reducing inflammatory cytokines and their toxicity to primary human corneal limbal epithelial cells, these cells were cultured and exposed to these compounds.

Methods: The PrestoBlue assay assessed cell viability after treatment. Anti-inflammatory effects on hyperosmotic cells were determined using real-time polymerase chain reaction and significance was gauged using one-way analysis of variance and Tukey's tests, considering p-values < 0.

View Article and Find Full Text PDF

Objectives: To identify predictive factors and to construct predictive models using epidemiological and clinical preoperative factors for the visual acuity change after intracorneal ring segment (ICRS) implantation in patients with keratoconus.

Methods: The medical records of 287 keratoconic eyes of 230 patients implanted with ICRS at Chula Refractive Surgery Center of a tertiary university hospital (Bangkok, Thailand) between January 2012 and March 2022 were retrospectively reviewed for epidemiological and clinical preoperative variables, including those derived from Scheimpflug tomography. After randomly excluding one eye for each bilateral case, the remaining 230 eyes were randomized into two groups: a training group (184 eyes) and a validation group (46 eyes).

View Article and Find Full Text PDF

Purpose: To evaluate diacerein (interleukin-1β inhibitor) efficacy on ocular surface disease (OSD).

Patients And Methods: This prospective observational study included patients who received diacerein for osteoarthritis and had dry eye (DE). The primary outcome was corneal staining score.

View Article and Find Full Text PDF

Background: Studies in the epidemiology of keratoconus are limited in Southeast Asia. A study on the prevalence and characteristics of keratoconus in the Thai population could give a general idea of its impact.

Objectives: To study keratoconus prevalence in patients seeking refractive surgery and analyze the characteristics of keratoconus.

View Article and Find Full Text PDF

This review summarizes the available literature and provides updates on the efficacy, safety, and patient outcomes of phakic intraocular lens implantation using implantable collamer lens (ICL), with a focus on newer models with a central port (EVO/EVO+ Visian Implantable Collamer Lens, STAAR Surgical Inc.). All studies included in this review were identified from the PubMed database and were reviewed for relevancy of their topic.

View Article and Find Full Text PDF

Background: Dry eye (DE) is a chronic inflammatory disease of the ocular surface of the eye that affects millions of people throughout the world. Smartphone use as an effective health care tool has grown exponentially. The "Dry eye or not?" app was created to evaluate the prevalence of symptomatic DE, screen for its occurrence, and provide feedback to users with symptomatic DE throughout Thailand.

View Article and Find Full Text PDF

Our study aimed to determine the correlation between the clinical staging of Fuchs' endothelial corneal dystrophy (FECD), rate of endothelial cell loss, and corneal biomechanical properties. This study combined a longitudinal retrospective/prospective analysis of corneal endothelial cell loss and a prospective cross-sectional analysis of corneal biomechanics of Fuchs' endothelial dystrophy. The trial was registered at the Thai Clinical Trials Registry as TCTR 20160927004.

View Article and Find Full Text PDF

Purpose: To evaluate long-term survival outcomes and determine the prognostic factors of corneal transplantation performed at a tertiary referral hospital in Thailand.

Design: A 15-year retrospective cohort study.

Materials And Methods: One corneal graft per patient was selected; graft failure was defined as graft opacity due to recurrent disease or endothelial cell dysfunction.

View Article and Find Full Text PDF

Purpose: To study the effectiveness and safety of upper and lower eyelid treatment with combined application of three modes of 2940-nm erbium-doped yttrium aluminium garnet (Er:YAG) and 1064-nm neodymium-doped yttrium aluminium garnet (Nd:YAG) lasers in patients with baggy eyelids (formed by intraorbital fat herniation) who exhibited meibomian gland dysfunction (MGD).

Patients And Methods: In this prospective cohort study, patients with baggy eyelid who exhibited MGD received combined laser treatment at baseline, as well as at the 4-, 8-, and 12-week follow-ups. The primary endpoint was meibum quality score at 16- and 24-week follow-ups; secondary endpoints were ocular surface index scores, tear film lipid layer thicknesses, tear break up times (TBUTs), Oxford scheme grades, and meibography grades at 16- and 24-week follow-ups.

View Article and Find Full Text PDF

Purpose: To evaluate the association between symptoms and signs of dry eye diseases (DED) with corneal biomechanical parameters.

Methods: This cross-sectional study enrolled 81 participants without history of ocular hypertension, glaucoma, keratoconus, corneal edema, contact lens use, diabetes, and ocular surgery. All participants were evaluated for symptoms and signs of DED using OSDI questionnaire, tear film break-up time (TBUT), conjunctival and corneal staining (NEI grading) and Schirmer test.

View Article and Find Full Text PDF

Purpose: To identify factors associated with the prognosis in keratitis.

Patients And Methods: The medical records of 25 patients (26 eyes) diagnosed with keratitis at a referral institution were reviewed. The demographic and clinical characteristics, treatment, microbiological diagnosis, histopathological features, and outcomes were recorded.

View Article and Find Full Text PDF

Purpose: Pterygium, a common ocular growth, has an unknown pathogenesis and aetiology. Environmental factors such as ultraviolet light, genetic factors and viral infections may be implicated in the development of pterygia. Human papillomavirus (HPV), an oncogenic virus, has previous been detected in individuals with pterygia.

View Article and Find Full Text PDF

This study evaluated human papillomavirus's (HPV) role in pterygium pathogenesis, its autoinoculation from genitalia to ocular surface, potential cytokines involved, and crosstalk cytokines between pterygium and dry eye (DE). This cross-sectional study enrolled 25 healthy controls (HCs) and 116 pterygium patients. Four subgroups of pterygium and DE were used in cytokine evaluations.

View Article and Find Full Text PDF

Purpose: To evaluate the efficacy of additional thermal pulsatile system compared to standard lid hygiene alone in meibomian gland dysfunction (MGD) patients who are using long-term anti-glaucoma medications.

Patients And Methods: Well-controlled glaucoma patients who used anti-glaucoma medications for at least 1 year and had MGD were enrolled and randomized between a study group who received thermal pulsatile system (Lipiflow) treatment and standard lid hygiene, and a control group who received standard lid hygiene alone. The primary outcome was meibomian gland expression score, and the secondary outcomes were the Ocular Surface Disease Index (OSDI) score, Schirmer test score, tear break-up time (TBUT), corneal staining score, lipid layer thickness (LLT), and meibography score.

View Article and Find Full Text PDF

Purpose: To report a case of conjunctival plaque infected from , which was possible transmitted from a cat.

Observations: A case of Thai woman presented with chronic painless ulcerated conjunctiva with white plaque. The lesion was not healed for one month after excision.

View Article and Find Full Text PDF

The objective of this double-masked, placebo-controlled, randomized trial was to assess the efficacy and safety of bevacizumab 0.05% eye drops in dry eye patients. This study included Dry Eye Workshop Study (DEWS) Grade 3-4 dry eye participants (n = 31) whose tear break-up time (TBUT) was ≤5 seconds(s).

View Article and Find Full Text PDF

Purpose: To study the efficacy and safety of intense pulsed light (IPL) in patients with meibomian gland dysfunction (MGD).

Methods: This prospective randomized double-masked sham-controlled trial included 114 patients with MGD. Patients were randomized into the IPL or sham group.

View Article and Find Full Text PDF

Purpose: To show the alteration of tomography, topometric indices and corneal densitometry after corneal refractive surgery combined with collagen crosslinking.

Patients And Methods: All medical records of patients undergoing corneal refractive surgery with simultaneous collagen crosslinking during April 2015 and August 2018 were retrospectively reviewed. Corneal tomography, higher-order aberrations (HOA), topographic indices and corneal densitometry were evaluated.

View Article and Find Full Text PDF

Purpose: To determine the efficacy of azithromycin 1.5% eyedrops compared with oral doxycycline in patients with moderate to severe meibomian gland dysfunction (MGD).

Methods: This prospective randomized trial included 169 participants with newly diagnosed moderate to severe MGD.

View Article and Find Full Text PDF

Background: We report a rare case of Phialophora verrucosa fungal keratitis, which required various types of treatment according to the intractable natural history of the disease.

Case Presentation: A 51-year-old Thai man with poorly controlled diabetes received a bamboo branch injury and developed a perforated corneal lesion on his left eye. A pathological study from therapeutic penetrating keratoplasty showed fungal hyphae.

View Article and Find Full Text PDF