Table 1 Correlation of relative search volumes (RSV) between specific internet search terms concerning cataract surgery and corneal transplantation in Germany between March 2017 till June 2019 and laser refractive procedures from 2010 till 2020 and totally performed surgical procedures.

From: Correlation of internet search enquiries, incidence of ophthalmological diseases and corneal, cataract and refractive surgical procedures

German search term (english translation in brackets)

Relative search volume trend

Pearson correlation (2 Tailored)

p value

Grauer star OP (cataract surgery)

Increasing

r = 0.59

p < 0.05

Nach grauer star OP (after cataract surgery)

Increasing

r = 0.60

p < 0.05

Katarakt OP (Cataract surgery)

Increasing

r = 0.33

Not significant

Grauer star OP Erfahrung (Cataract surgery personal experience)

Increasing

r = 0.17

Not significant

Katarakt (cataract)

Constant

r = 0.08

Not significant

Linsen Tausch (Lens Exchange)

No data available

Katarakt-, Linsen-Chirurgie (Cataract-, Lens- surgery)

No data available

Linsen operation (lens operation)

No data available

Hornhauttransplantation (corneal transplantation)

Constant

r = 0.69

p < 0.05

DMEK

Increasing

r = 0.55

p < 0.05

Keratoplastik (keratoplasty)

Constant

r = 0.23

Not significant

Spenderhornhaut (donor cornea)

No data available

DALK‚ DSAEK, schichtweise Hornhauttransplantation (DALK, DSAEK, lamellar corneal transplantation)

No data available

Augenlasern (Eye laser)

Decreasing

r = 0.83

p < 0.05

Augen lasern kosten (Costs of eye laser)

Constant

r = 0.69

p < 0.05

LASIK

Low

r = 0.18

Not significant

LASIK augen OP (LASIK eye surgery)

Low

r = 0.08

Not significant

PRK, trans PRK

No data available

  1. DALK = Deep Anterior Lamellar Keratoplasty, DMEK = Descemet Membrane Endothelial Keratoplasty, DSAEK = Descemet Stripping Automated Endothelial Keratoplasty, LASIK = Laser-assisted in-situ Keratomileusis, PRK = Phototherapeutic Keratectomy.