Correction of Refractive Error Surprises After Cataract Surgery in Adults

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Clinical Phase

NA

Total Enrollment

63 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-06-01

Study Completion Date

2025-06-30

Brief Summary

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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.

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Detailed Description

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Aim(s) of the Research:

1. detection of refractive surprises using autorefractometer, and corneal topography.
2. treatment of the resulting refractive error surprises.

Conditions

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Refractive Errors

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

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Corneal refractive surgery

Among patients scheduled for cataract surgery, Group I; will undergo Corneal refractive surgery to correct any post-operative refractive surprises.

Group Type ACTIVE_COMPARATOR

Refractive surgeries

Intervention Type PROCEDURE

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

IOL exchange

Among patients scheduled for cataract surgery, Group II; will undergo IOL exchange to correct any post-operative refractive surprises.

Group Type ACTIVE_COMPARATOR

Refractive surgeries

Intervention Type PROCEDURE

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

Piggyback sulcus IOL

Among patients scheduled for cataract surgery, Group III; will undergo Piggyback sulcus IOL to correct any post-operative refractive surprises.

Group Type ACTIVE_COMPARATOR

Refractive surgeries

Intervention Type PROCEDURE

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

Interventions

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Refractive surgeries

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

Intervention Type PROCEDURE

Eligibility Criteria

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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.

Minimum Eligible Age

55 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No