Spectacles for correcting irregular astigmatism in patients with keratoconus

Spectacles for correcting irregular astigmatism in keratoconic patients

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

ISRCTN

Registry ID

ISRCTN15964758

Enrollment

Registered

2023-03-28

Start date

2022-02-15

Completion date

Unknown

Last updated

2023-04-17

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

Conditions

Keratoconus Eye Diseases Keratoconus

Interventions

Visual acuity is measured at a single visit with no follow-up.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Keratoconus patients aged 18 years and over

Exclusion criteria

Exclusion criteria: 1. Patients unable to fixate on a target 2. Patients under 18 years old 3. Patients with other ocular diseases 4. Pregnant patients 5. Patients with a corneal scar or fibrosis

Design outcomes

Primary

Measure	Time frame
Visual acuity in LOGMAR at refraction (using both letters and lines) measured at a single visit	—

Secondary

Measure	Time frame
1. Keratometry measured using a keratometer at a single visit 2. Corneal thickness measured using a Pentacam tomographer at a single visit 3. Corneal profile measured using a Pentacam tomographer at a single visit 4. Aberrometry measured using an aberrometer at a single visit	—

Countries

England, United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026