Skip to main content

Table 1 Summary of clinical studies of stem cell therapy on keratoconus

From: Mini review: human clinical studies of stem cell therapy in keratoconus

Author(Year)

Participant characteristics

Conclusions

Alio et al. (2021) [23, 39]

Intrastromal implantation of stem cells alone: 5 eyes of 5 patients with advanced keratoconus, F/U: 3 years

Side effects: no evidences in examination

BCVA: 0.18 lines in Log MAR scale

Sph refraction: 1.1D improvement

Cyl refraction: 0.50D improvement

Max keratometry: 2.0 D improvement

CCT: 30 μm increase

Aberrometry findings: significantly reduced

Density of stromal keratocytes: increased

Intrastromal implantation of decellularized stromal scaffold: 5 eyes of 5patients with advanced keratoconus, F/U:3 years

Side effects: no evidences in examination

BCVA: 0.18 lines in Log MAR scale

Sph refraction: 1.0D improvement

Cyl refraction: 1.50D improvement

Max. keratometry: 2.0 D improvement

CCT: 31 μm increase

Aberrometry findings: significantly reduced

Intrastromal implantation of stem cells with a decellularized stromal scaffold: 4 eyes of 4 patients with advanced keratoconus, F/U:3 years

Side effects: no evidences in examination

BCVA: 0.19 lines in Log MAR scale

Sph refraction: 1.2D improvement

Cyl refraction: 1.1D improvement

Max. keratometry: 2.0 D improvement

CCT: 30 μm increase

Aberrometry findings: significantly reduced

Density of stromal keratocytes: increased

Ramin et al. (2023) [36, 40]

Intrastromal implantation of stem cells alone:

Side effects: no evidences in examination

8 eyes of 8 patients with moderate to severe keratoconus, age:22–35 years, F/U: 6 months

BCVA: 1.85 lines in Snellen scale

Sph refraction: 0.34D improvement

Cyl refraction: 0.84D improvement

Ant. keratometry: 0.76D improvement

CCT: 6.29 μm increase

Aberrometry findings: reduced

Density of stromal keratocytes: increased

1 eye with severe keratoconus and central corneal scaring, age: 65 years, F/U: 6 months

Side effects: no evidences in examination

BCVA: improvement of visual acuity from HM to 20/80 in Snellen scale

Sph & Cyl refraction: marked improvement

Keratometry: marked improvement

CCT: marked improvement

Aberrometry findings: marked reduced

Density of stromal keratocytes: increased

  1. F/U Follow-up, BCVA Best corrected visual acuity, Sph refraction Spherical refraction, Cyl refraction Cylindrical refraction, CCT Central corneal thickness, Ant. Keratometry Anterior mean keratometry