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No phaseRecruitingAge-related condition

Volumetric Visual Fields at Different Distances in Presbyopic Patients Using Occupational (PC-133 and PC-200) and General-Purpose Progressive Addition Lenses (CIVIUS2026PAL)

Ensayo clínico, unicéntrico, Transversal, Randomizado, Cruzado, Doble Ciego Para Evaluar Las Diferencias de Los Campos volumétricos de visión en Pacientes présbitas, Entre 400 y 40 cm., de Tres Tipos de Lentes oftálmicas Neutras de Lejos y adición Progresiva de 2 D. Dos de visión Intermedia y Cerca OPL (PC-133 y PC-200), y Otra Generalista PAL de visión Lejos, Intermedia y Cerca (FIT-FRM).

Sponsor
University of Seville (Academic or other)
Enrolment
28 planned
Conditions
Presbyopia
Interventions
OPAL PC 133 assessment; OPAL PC 200 assessment; PAL assessment
Ages
adults, older adults
Registry
NCT07870785

Full record on ClinicalTrials.gov

From the registry

This single-center, randomized, double-blind, crossover clinical trial aims to compare the volumetric visual fields provided by two occupational progressive addition lenses (OPLs) optimized for intermediate and near vision in presbyopic patients. The study evaluates Vimax PC 1.5 FWD 133 cm and Vimax PC 1.5 FWD 200 cm lenses and Vimax Fit FRM, all of them with plano distance power and a +2.00 D near addition, in order to determine differences in the extent of clear vision at multiple working distances. Participants will undergo a comprehensive optometric examination including medical and ocular history, visual acuity assessment, accommodative amplitude measurement, autorefraction, interpupillary distance measurement, ocular motility evaluation, confrontation visual fields, Amsler grid testing, and binocular vision assessment. Visual field measurements will then be performed using both study lenses under standardized conditions. Subjects will be instructed to maintain a fixed head position while identifying optotypes located at distances of 4 m, 2 m, 1.33 m, 80 cm, 40 cm, and 25 cm.…

Primary outcomes

  • Visual field volume

History

  1. Study completion expected

  2. Last registry update

  3. Registered

  4. Primary completion

  5. Started