| 1937 | MERIDIAN founded as manufacturer for optical devices. |
| 1969 | First industrial laser developed. |
| 1982 | Prof. Fankhauser together with LASAG launches the first commercially available ophthalmic Nd:YAG laser - Microruptor II. |
| 1986 | LASAG launches the second generation Nd:YAG laser - Topaz. |
| 1991 | LASAG launches the revolutionary designed Nd:YAG laser – Microruptor III |
| 1991 | MERIDIAN, meanwhile a HAAG-STREIT company, acquires the ophthalmic laser segment of LASAG. |
| 1994 | MERIDIAN launches its first frequency doubled Nd:YAG laser - Merilite |
| 2000 | PPU medical services, a team of former LASAG engineers, acquires MERIDIAN. |
| 2001 | MERIDAN introduces the new Nd:YAG laser - Microruptor V - and the diode laser - Merilas 810 Tpro. |
| 2006 | Launch of the new Merias 532α, the most ergonomical green laser photocoagulator with an award nominated design. |
| 2007 | Launch of the Microruptor V - Combi System (MR V / Merilas 532) |
| 2008 | Launch of the new Laser Indirect Ophthalmoscope - LIO 500 |
| 2009 | Launch of the new Universal Slit Lamp Adapter |
