Quality of Life in Presbyopes Using Single-vision Lens and Progressive Lens Correction

Launched by THE HONG KONG POLYTECHNIC UNIVERSITY · Nov 19, 2024

Keywords

ClinConnect Summary

This clinical trial is looking to understand how different types of glasses affect the quality of life for people aged 40 to 70 who have presbyopia, a common condition that makes it hard to see things up close. The study will compare two groups of participants: one group will wear progressive addition lenses (PALs), which help with both near and far vision, while the other group will wear single-vision spectacles (SVSs), which are designed only for near vision. Over one month, researchers will measure how these glasses impact daily activities and overall quality of life using specific questionnaires.

To participate in this study, you should be between 40 and 70 years old and have certain vision characteristics, like a mild need for glasses for distance vision. You should not have had any recent eye surgeries or serious eye diseases. If you join the trial, you'll wear either the PALs or SVSs for a month and complete a few questionnaires to share how your vision and daily life are affected. This study aims to provide valuable insights that could help improve vision correction options for people with presbyopia.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • 1. Age 40-70 years;
• • 2. A distant correction of ≤2D for hyperopia, or \>-2 D for myopia, or \< 2D for astigmatism in both eyes;
• • 3. Anisometropia of less than 1.50 D;
• • 4. Distance best-corrected visual acuity (BCVA) of at least 0.5 LogMAR, and near VA \< N8 (20/50) at 40 cm with habitually worn distance refractive correction, with improvement of near vision by at least one line on a near LogMAR E chart with the use of a plus lens;
• • 5. Have not undergone any near correction in the past six months;
• • 6. Able to answer a questionnaire;
• • 7. Giving written consent to participate in the study.
• Exclusion Criteria:
• • 1. Ocular abnormalities leading to visual impairment including severe cataract, glaucoma, strabismus, and ocular fundus diseases;
• • 2. Severe physiological and psychological diseases affecting follow-up;
• • 3. History of cataract surgery, phakic intraocular lens surgery, corneal surgery, or any intraocular surgery affecting the refractive status of the eye;
• • 4. Have used pilocarpine in the past six months.