Correction of Refractive Error Surprises After Cataract Surgery in Adults

Status

Not yet recruiting

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT06379477

Enrollment

Registered

2024-04-23

Start date

2024-06-01

Completion date

2025-06-30

Last updated

2024-04-23

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

Conditions

Refractive Errors

Keywords

refractive error surprises

Brief summary

A refractive surprise can be defined as the failure to achieve the intended postoperative refractive target or the presentation of unexpected and, unwanted post-operative refractive error. It can cause anisometropia or dominance switch and is a source of patient dissatisfaction due to unmet expectations.The best way to manage refractive surprise is to prevent it. The 2017 NICE guidelines on the management of cataracts provide advice on prevention of refractive surprise through accurate biometry, A-constant optimisation, intraocular lens (IOL) formula selection and avoiding wrong lens implant errors.Benchmark standards for NHS cataract surgery dictate that 85% of eyes should be within 1 dioptre (D) and 55% within 0.5D of target spherical equivalent refraction following surgery.

Detailed description

Aim(s) of the Research: 1. detection of refractive surprises using autorefractometer, and corneal topography. 2. treatment of the resulting refractive error surprises.

Interventions

PROCEDURERefractive surgeries

after primary phacoemulsification surgery any resulting refractive error surprises will be corrected with different refractive surgery options

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

DIAGNOSTIC

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

55 Years to 75 Years

Healthy volunteers

Inclusion criteria

All adult patients scheduled for cataract surgery with: * Symptomatizing patients with postoperative spherical error of more than 1 diopters. * Symptomatizing patients with postoperative cylindrical error of more than 1 diopters. * Symptomatizing patients with uncorrected distant visual acuity less than 6/24 * Symptomatizing patients with corrected distant visual acuity of less than 6/12 * Clear cornea. 6. Uneventful surgery.

Exclusion criteria

* Patients with complicated cataract. * Raised intraocular pressure (IOP). * Patients with pathologies of the posterior segment of the eye. * Other causes of diminution of vision.

Design outcomes

Primary

Measure	Time frame	Description
Diagnosis and treatment of the resulting refractive error surprises	Baseline	Rate of refractive error surprises

Contacts

Primary ContactAbdelrahman M Saad, MSC

arabasdm.23@gmail.com+201067895256

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026