Volumetric Visual Fields at Intermediate and Near Distances in Presbyopic Patients Using Occupational and General-Purpose Progressive Addition Lenses

NCT07617090 | Active Not Recruiting

• 2 other identifiers: CIVIUS2025PALSICEIA-2025-001629
• Study Type: interventional
• Target: 26
• Locations: 1 country
• Sites: 1

Brief Summary

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 Zoom 1.5 FWD 4 m and Vimax PC 1.5 FWD 4 m 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. Both lenses will be tested in random order under masked conditions so that neither participants nor investigators know which lens design is being evaluated during each phase. At least 23 presbyopic participants are expected to be enrolled. The study procedures are non-invasive and are anticipated to be completed in a single one-hour visit, although additional sessions may be scheduled if necessary. No significant risks are expected beyond possible transient visual fatigue associated with the duration of testing. The primary objective is to determine which occupational progressive lens design provides a greater spatial volume of clear vision and wider horizontal and vertical visual fields at different intermediate and near distances. The findings may contribute to improving personalized recommendations of occupational lenses according to patients' visual demands and working distances.

Conditions

Presbyopia

Keywords

Occupational progressive lenses; Presbyopia; Visual field depth; Visual field area; Visual acuity

Outcome Measures

Primary Outcomes (1)

• Visual field volume

  It will consist of the volume defined by two parallel surfaces bounded by the visual fields perceived with clear horizontal and vertical vision by the patient between the distances of 4 m and 25 cm while wearing each pair of spectacles. The volume will be calculated using the Heronian formula for the volume of a quadrangular pyramidal frustum.

  Immediately after the adjustment of the frame where the lenses were placed, an average of 30 minutes per patient.

Secondary Outcomes (1)

• Visual fields surface

  Immediately after the adjustment of the frame where the lenses were placed, an average of 30 minutes per patient.

Study Arms (3)

OPL designed for PC use

EXPERIMENTAL

VIMAX PC: Occupational progressive lenses designed to provide clear vision from 400 cm to 40 cm, with a wider visual field optimized for monitor-based environments with a depth of field between 60 and 80 cm. These lenses, designated L1, were custom ordered with neutral distance power and a near addition of +2.00 D, a vertex distance of 13 mm, pantoscopic tilt of 8°, wrap angle of 6°, working distance of 40 cm, inset of 2.5 mm in both eyes, and NPD of 31 mm in each eye.

Device: OPAL PC assesment

OPL designed for office use

EXPERIMENTAL

VIMAX ZOOM: Occupational progressive lenses also designed to provide clear vision from 400 cm to 40 cm, but with a more homogeneous distribution of the visual field across office and home environments, with a depth of field between 40 and 400 cm. These lenses, designated L2, were also custom ordered with neutral distance power and a near addition of +2.00 D, vertex distance of 13 mm, pantoscopic tilt of 8°, wrap angle of 6°, working distance of 40 cm, inset of 2.5 mm in both eyes, and NPD of 31 mm in both eyes.

Device: OPAL Office assessment

PAL

ACTIVE COMPARATOR

VIMAX FIT: Progressive additional lenses custom ordered with neutral distance power and a near addition of +2.00 D, vertex dis-tance of 13 mm, pantoscopic tilt of 8°, wrap angle of 6°, working distance of 40 cm, inset of 2.5 mm in both eyes, and NPD of 31 mm in both eyes.

Device: PAL assesment

Interventions

OPAL PC assesment DEVICE

Fitting and positioning of the spectacles : participants were instructed to move only their eyes and to verbally identify the letters indicated by the optometrist. Measurement of clear vision limits: the horizontal and vertical boundaries of clear vision were recorded on a scaled results sheet, as defined by the participant using the optotype, at distances of 400, 200, 133, 80, 40, and 25 cm, in that order

OPL designed for PC use

OPAL Office assessment DEVICE

Fitting and positioning of the spectacles : participants were instructed to move only their eyes and to verbally identify the letters indicated by the optometrist. Measurement of clear vision limits: the horizontal and vertical boundaries of clear vision were recorded on a scaled results sheet, as defined by the participant using the optotype, at distances of 400, 200, 133, 80, 40, and 25 cm, in that order

OPL designed for office use

PAL assesment DEVICE

Fitting and positioning of the spectacles : participants were instructed to move only their eyes and to verbally identify the letters indicated by the optometrist. Measurement of clear vision limits: the horizontal and vertical boundaries of clear vision were recorded on a scaled results sheet, as defined by the participant using the optotype, at distances of 400, 200, 133, 80, 40, and 25 cm, in that order

PAL

Eligibility Criteria

• Age: 52 Years - 67 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Spherical ametropia for distance vision ≤ ±4.00 D and astigmatic ametropia ≤ 1.00 D.
• Decimal VA ≥ 0.8, either uncorrected (UCVA) or corrected (BCVA) with monofocal contact lenses.
• Patients with a nasopupillary distance (NPD) of 31 mm, with a tolerance of ±2 mm in each eye

You may not qualify if:

• Astigmatism greater than ±1.00 D.
• Patients wearing progressive contact lenses.
• Patients who have undergone cataract surgery or have monofocal or multifocal intraocular lenses.
• Anisometropia greater than 2.50 D.
• Decimal distance visual acuity \< 0.8 (UCVA or BCVA) with monofocal contact lenses.
• Patients without normal ocular motility or with partial dysfunction of one or more ex-traocular muscles, or with restricted visual fields or scotomas.
• Visual suppression in one eye between 4 m and 25 cm.
• Strabismus or nystagmus.

Sponsors & Collaborators

• University of Seville: lead

Study Sites (1)

Pharmacy school, University of Seville

Seville, Sevilla, 41012, Spain

Location

MeSH Terms

Conditions

Presbyopia

Condition Hierarchy (Ancestors)

Refractive Errors; Eye Diseases

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, INVESTIGATOR
• Masking Details: A code was assigned to each participant and echa type of lenses. Investigators don't know which lens are being assessed during the trial.
• Purpose: TREATMENT
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Optometry degree, Pharmacy degree and PhD in Molecular Biology, Biomedicine and Clinical Research

Study Record Dates

• First Submitted: May 14, 2026
• First Posted: June 1, 2026
• Study Start: September 29, 2025
• Primary Completion: November 28, 2025
• Study Completion (Estimated): September 1, 2026
• Last Updated: June 1, 2026

Record last verified: 2026-05

Data Sharing

• IPD Sharing: Will not share

Locations

ES (1)