Effect of manifest spherical equivalent error on visual acuity at various distances in eyes with a trifocal intraocular lens (IOL): a simulation study

Effect of manifest spherical equivalent error on visual acuity at various distances in eyes with a trifocal intraocular lens (IOL): a simulation study - Effect of spherical equivalent error on trifocal intraocular lens

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000034862

Enrollment

Registered

2018-11-12

Start date

2018-06-13

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cataract

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Sixty eyes of 30 patients who underwent bilateral implantation of a trifocal IOL (Alcon PanOptix; TFNT00) were enrolled

Exclusion criteria

Exclusion criteria: Preoperative exclusion criteria were patients with any pathology of the cornea, macula, or optic nerve; opaque media other than cataract; history of ocular inflammation or surgery; corneal astigmatism of 1.0 D or more; marked irregular corneal astigmatism; amblyopia; and any difficulties with examinations or follow-up. Intraoperative exclusion criteria were a small pupillary diameter that required pupil expansion procedures and eventful surgery.

Design outcomes

Primary

Measure	Time frame
Monocular corrected visual acuity (VA) at various distances was measured using the all-distance vision tester (KOWA AS-15) after simulation of spherical equivalent error. 1) +1.0D addition simulating -1.0D myopia 2) +0.5D addition simulating -0.5D myopia 3) 0D addition simulating emmetropia 4)-0.5D addition simulating +0.5D hyperopia 5) -1.0D addition simulating +1.0D hyperopia	—

Secondary

Measure	Time frame
Pupil diameter, corneal astigmatism, manifest spherical equivalent value	—

Countries

Japan

Contacts

Public ContactKen Hayashi

Hayashi Eye Hospital Department of Ophthalmology

hayashi-ken@hayashi.or.jp092-431-1680

Outcome results