Intrastromal Corneal Ring Segments and Toric Phakic Posterior Intra-ocular Lenses Implantation in Keratoconus

Comparison Between Intrastromal Corneal Ring Segments and Toric Phakic Posterior Intra-ocular Lenses Implantation in Keratoconus

Status

UNKNOWN

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT05055349

Enrollment

Registered

2021-09-24

Start date

2019-11-28

Completion date

2021-11-22

Last updated

2021-09-24

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

Conditions

Keratoconus

Brief summary

To compare visual and refractive measurements of intrastromal corneal ring segments versus toric phakic posterior intra-ocular lenses implantation in keratoconus

Detailed description

* The study is a prospective comparative interventional case series. It will be conducted in Minia university hospital and Roaa Laser Vision Correction Center. * Fourty eyes will be evenly allocated into two groups: Group (A): 20 eyes will undergo corneal collagen cross linking (epithelium off) 1 month after Femtosecond laser assisted intrastromal corneal keraring segments. Group (B): 20 eyes will undergo toric phakic posterior IOL implantation 1 year after corneal collagen cross linking (epithelium off). • An informed written consent to be involved in the study will be obtained from each patient.

Interventions

OTHERcorneal ring segments

ring hard segments inserted within corneal stroma using femtolaser

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

SINGLE (Investigator)

Eligibility

Sex/Gender

ALL

Age

21 Years to 40 Years

Healthy volunteers

Inclusion criteria

* Keratoconus grade I to III according to the Amsler-Krumeich classification

Exclusion criteria

* Acute hydrops or grade IV keratoconus * Any ocular diseases or surgeries * Corneal thickness less than 400 µm at the thinnest corneal point, and at least 450 µm at the incision site for ICRS group * Corneal pacities

Design outcomes

Primary

Measure	Time frame	Description
pentacam readings	1 month	a device that read topometric corneal data and other data

Countries

Egypt

Contacts

Primary Contactahmed maher khalafallah

drahmedmaher1988@gmail.com01119094426

Outcome results

None listed

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