Long-term Comparison of Posterior Chamber Phakic Intraocular Lens with and without a Central Hole (Hole ICL and Conventional ICL) Implantation for Moderate to High Myopia and Myopic Astigmatism.

Long-term Comparison of Posterior Chamber Phakic Intraocular Lens with and without a Central Hole (Hole ICL and Conventional ICL) Implantation for Moderate to High Myopia and Myopic Astigmatism. - Long-term Comparison of Hole ICL and Conventional ICL

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000018771

Enrollment

Registered

2015-08-23

Start date

2010-01-01

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

Moderate to High Myopia and Myopic Astigmatism.

Interventions

Posterior Chamber Phakic Intraocular Lens with a Central Hole Posterior Chamber Phakic Intraocular Lens without a Central Hole

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Moderate to high myopia (manifest spherical equivalent -4.00 diopter (D) or more)

Exclusion criteria

Exclusion criteria: Eyes with keratoconus were excluded from the study by using the keratoconus screening test of Placido disk videokeratography.

Design outcomes

Primary

Measure	Time frame
Before, 1, 3 and 6 months, and 1, 3, and 5 years after surgery, we assessed safety, efficacy, predictability, stability, intraocular pressure, lens density, and adverse events of the two surgical techniques.	—

Countries

Japan

Contacts

Public ContactKazutaka Kamiya

University of Kitasato School of Medicine Department of Ophthalmology

kamiyak-tky@umin.ac.jp+81-42-778-8464

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026