Refractive Error

3

Review clinical trials related to Refractive Error. Use filters to narrow results by trial status, phase, treatment, biological sex and sponsor.

Condition / disease
Location
Status: Not yet recruiting

Community-Based Eye Screening With Structured Referral Tracking for Preventing Avoidable Blindness in Adults in Rawalpindi, Pakistan

This cluster randomized controlled trial aims to evaluate the effectiveness of a Structured Referral Tracking (SRT) intervention in improving referral completion among adults identified with avoidable blindness during community-based eye screening camps in Rawalpindi District, Pakistan. Ten community clusters will be randomized into intervention and control groups. Participants in the intervention group will receive structured referral counseling, weekly reminder calls or messages, and customized referral guidance for eight weeks, while the control group will receive standard referral procedures. The primary outcome is referral completion at a tertiary eye hospital within eight weeks after screening. Secondary outcomes include knowledge regarding avoidable blindness, treatment satisfaction, feasibility, acceptability, and barriers influencing referral completion.

Participants needed: 500
Trial details
Age: 18+Biological sex: AllType: InterventionalSponsor: Health Services Academy, Islamabad, PakistanUpdated: Jun 4, 2026Locations: 1
Eligibility criteria

Adults aged 18 years or above [+3]

Individuals already undergoing treatment for the identified eye condition [+3]

Status: Not yet recruiting

Comparison of PRESBYOND Laser Blended Vision and Conventional Monovision LASIK in Individuals With Presbyopia: A Randomized Clinical Study

The goal of this clinical trial is to learn if laser blended vision (LBV) works better than traditional monovision LASIK to correct presbyopia in adults aged 40 to 55 years. Presbyopia is an age-related condition that makes it hard to see things up close. The study will also evaluate the safety of both procedures. The main questions it aims to answer are: Does LBV improve distance, intermediate, and near vision at the same time after surgery? Is LBV as safe as traditional monovision LASIK? Researchers will compare laser blended vision to traditional monovision LASIK to see if LBV provides better overall vision after surgery. Participants will: Be randomly assigned to receive either laser blended vision or traditional monovision LASIK Have standard eye examinations before surgery Undergo LASIK surgery using the assigned method Return for follow-up visits at 1 week, 1 month, 3 months, and 6 months after surgery Complete vision tests and questionnaires about visual quality and satisfaction

Participants needed: 100
Trial details
Age: 40-55Biological sex: AllType: InterventionalSponsor: Zhongshan Ophthalmic Center, Sun Yat-sen UniversityUpdated: Apr 6, 2026
Eligibility criteria

Adults aged 40 to 55 years with presbyopia [+5]

Previous ocular surgery [+6]

Status: Recruiting

An Evaluation of Myopia Control Lenses on Wearing Experience in Myopic Children

The goal of this research study is to understand the wearing experience of A.M.L. series of lenses in myopic children. The main questions it aims to answer are: * How quickly and effectively children adapt to the A.M.L. series of lenses? * The proportion of children who adapted to the A.M.L. series of lenses within 4 to 6 days? 40 myopic children aged 6 to 12 years will be recruited as participants, and all of them will be wearing A.M.L. series of lenses. Participants will: * Wear A.M.L. series of lenses for a period of 2 weeks * Visit at day 4-6, week 1 and week 2.

Participants needed: 40
Trial details
Age: 6-12Biological sex: AllType: InterventionalSponsor: Essilor InternationalUpdated: Jan 23, 2026Locations: 1
Eligibility criteria

Volunteer participant [+7]

History of Atropine, Orthokeratology, or Red Light treatment [+8]