A manual phoropter holds the trial lenses in a refractor head and the examiner changes them by hand with dials and levers. An automatic phoropter (also called a digital or auto phoropter) changes the same kinds of lenses electronically from a controller and can run programmed test sequences. In both cases the examiner directs subjective refraction and interprets the patient’s answers.
What does a phoropter do?
A phoropter places spherical, cylindrical, prism and auxiliary lenses in front of each eye during subjective refraction. The examiner compares lens options, asks the patient which is clearer and refines sphere, cylinder, axis and the binocular result. The outcome is the prescription the examiner signs off.
Objective measurements, for example from an auto refractor, usually give the starting point. The phoropter is where that starting point is refined.
Manual vs automatic phoropter at a glance
Swipe sideways to see all columns →
| Manual phoropter | Automatic phoropter | |
|---|---|---|
| How lenses change | By hand, with dials and levers on the refractor head | Electronically, from a touch-panel controller |
| Power | None needed | Needs a power supply and cables |
| Test sequence | Set by the examiner for each patient | Preset programs guide the sequence; editable programs are possible |
| Consistency between staff | Depends on each examiner’s routine | Programmed sequences help staff follow the same routine |
| Speed in busy rooms | Good with experienced staff | Faster lens changes help high-volume clinics |
| Reference values | Recorded separately | Can show auto refractor and old-spectacle values beside the new result |
| Chart integration | Chart operated separately | Can control a compatible digital chart from the same controller |
| Typical setting | Training clinics, lower-volume rooms, backup lane | High-volume clinics, chains, rooms with a digital chart |
When a manual phoropter makes sense
- Training and teaching: students see and feel every lens change, which helps them learn the refraction routine.
- Lower-volume rooms: the speed advantage of an automatic phoropter matters less when the patient list is short.
- No power dependency: a manual head keeps working wherever it is mounted.
- A second lane: some practices keep a manual phoropter as a backup or overflow station.
When an automatic phoropter makes sense
- High patient volume: electronic lens changes and preset sequences shorten each examination.
- Several examiners: programmed sequences help staff follow the same routine.
- A connected room: values from a compatible auto refractor and a digital chart can be handled from one controller.
- Binocular and near testing: dedicated programs and individual tests are available from the same console.
ENOCHTEC manual and automatic phoropters
Swipe sideways to see all columns →
| FO-600 manual | CV-5600 automatic | |
|---|---|---|
| Sphere | −19.00 to +16.75 D; −29.00 to +26.75 D with optional lenses | −19.00 to +16.50 D; steps 0.25 / 0.50 / 1.00 / 3.00 D |
| Cylinder | 0 to −6.00 D; to −8.00 D with auxiliary lenses | 0.00 to −8.75 D in 0.25 D steps |
| Axis | 0–180°, 5° steps | 0–180°, 1° / 5° steps |
| Cross cylinder | ±0.25 D, synchronized with the cylinder axis; ±0.50 D optional | ±0.25 D; fixed ±0.50 D |
| Rotary prism | 0–20Δ, 1Δ steps | 0–20Δ, 0.1 / 0.5 / 1.0Δ steps |
| PD | 48–80 mm, 1 mm steps | 48–80 mm, 1 mm steps |
| Control | Manual dials; black or white housing | 10.2-inch touch panel; 23-step Standard Program, visual-function programs, editable channels A–D |
Specifications are taken from each product page. Final configuration, accessories and documentation are confirmed in the quotation for your market.
Compare each type in detail in the manual phoropter buying guide and the auto phoropter buying guide, or see how the phoropter fits into a complete refraction room.
Frequently asked questions
Does an automatic phoropter choose the prescription?
No. An automatic (digital) phoropter changes lenses electronically from a controller, and programmed sequences organize the test steps. The examiner still directs subjective refraction and interprets the patient’s responses.
Does a manual phoropter need power?
No. A manual phoropter is changed by hand with dials and levers, so it needs no power supply. An automatic phoropter runs from a power source and controller.
Can an automatic phoropter receive data from an auto refractor?
It can, when the models are compatible. The ENOCHTEC CV-5600 can receive values from a compatible, configured auto refractometer link or accept them as manual entries; compatibility is confirmed for the exact model before ordering.
What lens ranges do ENOCHTEC phoropters cover?
The FO-600 manual phoropter covers sphere −19.00 to +16.75 D (−29.00 to +26.75 D with optional lenses) and cylinder 0 to −6.00 D. The CV-5600 automatic phoropter covers sphere −19.00 to +16.50 D and cylinder 0.00 to −8.75 D.
Which type suits a training clinic?
Many training clinics start with a manual phoropter, because students see and handle each lens change directly and the instrument needs no power. Clinics that want every examiner to follow the same sequence often add an automatic phoropter.
Planning a refraction room?
Tell us how many patients you see, who will run the refractions and which chart and auto refractor you use. We will recommend a phoropter and send a quotation.
Request a quoteThis guide is general information for equipment buyers. Refraction and prescribing decisions are made by qualified eye-care professionals.