Base Curves of Bandage Contact Lenses and Their Effects on Post Trans-PRK Vision and Pain

Dongyang People's Hospital

Status: Enrolling

Conditions: Myopia

Treatments: Behavioral: Placing a bandage contact lens on the cornea,A contact lens placed on the cornea, with an 8.8-mm base curve in right eye and one with an 8.4-mm base curve in the left eye.; Procedure: single-step Trans-PRK; Behavioral: Placing a bandage contact lens on the cornea, with an 8.4-mm base curve in right eye and one with an 8.8-mm base curve in the left eye.

Study type: Interventional

Funder types: Other

Identifiers

NCT06393855

BCLTPRK

Details and patient eligibility

About

The objective of this study was to investigate the impact of employing bandage contact lenses with a base curve of 8.4 mm versus 8.8 mm on visual recovery following Trans-PRK in patients characterized by steep corneas and high myopia.

Full description

Comparing two kind of bandage lenses in the contralateral eyes of the same individual following Trans-PRK may enable the derivation of reliable conclusions regarding the optimal choice for bandage lenses after Trans-PRK.

Enrollment: 36 estimated patients

Sex: All

Ages: 18 to 40 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

Spherical equivalent refractive error between -6.00 and -8.00 D in either eye.

Astigmatism of no more than 2.0 D in either eye.

Best spectacle-corrected visual acuity (BCVA) according to the logarithm of the Minimum angle of resolution (logMAR) scale of 0 or better in both eyes.

Willing and able to participate in all required activities of the study.

Exclusion criteria

Diabetes mellitus.

Systemic connective tissue disease.

Cardiovascular disease, epilepsy.

Eyelid abnormalities.

Corneal disease.

Glaucoma.

A history of ocular disease.

Noncompliance with measurement at enrollment.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Triple Blind

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36 participants in 2 patient groups

contact lens with 8.4-mm base curve in right eye

Experimental group

Description:

A contact lens placed on the cornea after the single-step Trans-PRK，with an 8.4-mm base curve in right eye and one with an 8.8-mm base curve in the left eye

Treatment:

Behavioral: Placing a bandage contact lens on the cornea, with an 8.4-mm base curve in right eye and one with an 8.8-mm base curve in the left eye.

Procedure: single-step Trans-PRK

contact lens with 8.8-mm base curve in right eye

Experimental group

Description:

A contact lens placed on the cornea after the single-step Trans-PRK，with an 8.8-mm base curve in right eye and one with an 8.4-mm base curve in the left eye

Treatment:

Procedure: single-step Trans-PRK

Behavioral: Placing a bandage contact lens on the cornea,A contact lens placed on the cornea, with an 8.8-mm base curve in right eye and one with an 8.4-mm base curve in the left eye.