Examination of astigmatism correction effect and visual function / satisfaction of toric phakic intraocular lens using preoperative and intraoperative image guide system

Examination of astigmatism correction effect and visual function / satisfaction of toric phakic intraocular lens using preoperative and intraoperative image guide system - Examination of astigmatism correction effect and visual function / satisfaction of toric phakic intraocular lens using preoperative and intraoperative image guide system

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000045082

Enrollment

Registered

2021-09-01

Start date

2021-11-01

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

myopic astigmatism

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: At Kitasato University Hospital and Miyata Eye Hospital, patients who wish to have toric phakic intraocular lens surgery for moderate / severe myopia during the period from the approval date of the long research period to March 31, 2023. Cases between the ages of 20 and 50 Cases of corneal astigmatism 1.25D or more Distance correction Cases in which it can be predicted that visual acuity will be corrected to 1.0 or higher in both eyes.

Exclusion criteria

Exclusion criteria: Cases with a history of organic eye diseases other than refractive error (keratoconus, dry eye, eye inflammation disease, eye infection, cataract, glaucoma, retinal disease, etc.) and other eye surgery Cases in which the reliability of biometric data obtained by preoperative examination is low Cases judged by the principal investigator to be inappropriate

Design outcomes

Primary

Measure	Time frame
Astigmatism axis shift amount	—

Secondary

Measure	Time frame
Uncorrected / Corrected Visual Acuity (logMAR) Refractive power (spherical equivalent / astigmatic power) corneal astigmatism Astigmatism correction effect (Correction Index = achieved astigmatism correction power / target astigmatism correction power) Double angle plots Caused astigmatism (mean, median, center of gravity) Pain during marking / surgery (VAS) Overall Surgery Satisfaction (VAS)	—

Countries

Japan

Contacts

Public ContactSatoshi Gotoda

Kitasato university hospital Ophthalmology

snothingventurednothinggained@gmail.com09055477361

Outcome results