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Effect of Artificial Tears on the Parameters of the Eye and Its Impact on IOL Power Calculation for Cataract Surgery

NCT04706455 · Status: UNKNOWN · Phase: NA · Type: INTERVENTIONAL · Enrollment: 60

Last updated 2021-01-12

No results posted yet for this study

Summary

First, preoperative biometry of the eye at the IOL Master® will be performed. Then, corneal topography will be measured at the Oculus pentacam®. Afterwards, one of two eye drops are instilled in the eye, and biometry and corneal topography will be repeated after 5 minutes.

For all patients, the Barrett Universal II formula will be used for calculation of IOL power. Predicted refraction outcome will be referred to as SEQ. The chief surgeon will perform the uneventful standard cataract operation with in-the-bag implantation of a HOYA IOL (Model 251) through a 2.4-mm corneal incision.

A Subjective Refraction using plus principle will be performed one month after the operation, and ETDRS visual acuity charts will be used to measure best-corrected visual acuity. Refraction will be described as SR (postoperative SEQ) and will be calculated as:

SR = sphere + (0.5\*cylinder)

Conditions

  • Cataract Senile
  • Dry Eye

Interventions

DEVICE

sodium hyaluronate 0.1%

Instillation of one drop sodium hyaluronate 0.1%

DEVICE

sodium hyaluronate 0.3%

Instillation of one drop sodium hyaluronate 0.3%

Sponsors & Collaborators

  • Second Affiliated Hospital of Xi'an Jiaotong University

    lead OTHER

Principal Investigators

  • Ling Bai, MD,PhD · Second Affiliated Hospital of Xi'an Jiaotong University

Study Design

Allocation
RANDOMIZED
Purpose
DIAGNOSTIC
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
30 Years
Max Age
95 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2020-12-01
Primary Completion
2021-02-28
Completion
2021-03-31

Countries

  • China

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04706455 on ClinicalTrials.gov